# EDGAR Filing Document

**Accession Number:** 0001518557
**File Stem:** 0001193125-23-023755
**Filing Date:** 2023-2
**Character Count:** 157234
**Document Hash:** 24bdf7a10b466c2b6d172a4d88c7c04a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-023755.hdr.sgml**: 20230203

**ACCESSION NUMBER**: 0001193125-23-023755

**CONFORMED SUBMISSION TYPE**: N-CSRS

**PUBLIC DOCUMENT COUNT**: 7

**CONFORMED PERIOD OF REPORT**: 20221130

**FILED AS OF DATE**: 20230203

**DATE AS OF CHANGE**: 20230203

**EFFECTIVENESS DATE**: 20230203

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MainStay MacKay DefinedTerm Municipal Opportunities Fund
- **CENTRAL INDEX KEY:** 0001518557
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0531

**FILING VALUES:**
- **FORM TYPE:** N-CSRS
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-22551
- **FILM NUMBER:** 23584784

**BUSINESS ADDRESS:**
- **STREET 1:** 51 MADISON AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10010
- **BUSINESS PHONE:** 212-576-7000

**MAIL ADDRESS:**
- **STREET 1:** 51 MADISON AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10010

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MainStay DefinedTerm Municipal Opportunities Fund
- **DATE OF NAME CHANGE:** 20120417

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MainStay DefinedTerm Municipal High Income Fund
- **DATE OF NAME CHANGE:** 20110419

------

------

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

**Form N-CSR** 

**CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT** 

**INVESTMENT COMPANIES** 

**Investment Company Act File Number 811-22551** 

## MAINSTAY MACKAY DEFINEDTERM MUNICIPAL OPPORTUNITIES FUND
(Exact name of Registrant as specified in charter)

51 Madison Avenue, New York, NY 10010

(Address of principal executive offices) (Zip code)

J. Kevin Gao, Esq.

30 Hudson Street

Jersey City, New Jersey 07302

(Name and address of agent for service)

Registrant's telephone number, including area code: (212) 576-7000

Date of fiscal year end: May 31

Date of reporting period: November 30, 2022

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**FORM N-CSR** 

**Item 1.** **Reports to Stockholders.** <br>

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## MainStay MacKay DefinedTerm Municipal Opportunities Fund

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### Message from the President and Semiannual Report
Unaudited \| November 30, 2022 \| NYSE Symbol **MMD**

Sign up for e-delivery of your shareholder reports. For full details on e-delivery, including who can participate and what you can receive via e-delivery,<br> please log in to www.computershare.com/investor.

Not FDIC/NCUA Insured Not a Deposit May Lose Value No Bank Guarantee Not Insured by Any Government Agency

![](g343667img994abcd81.jpg)

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Message from the President

During the six-month reporting period ended November 30, 2022, most of the world appeared intent on a return to post-pandemic normalcy despite the continuing impact of COVID-19 on global health. Markets focused primarily on the effects of rising inflation and Russia's invasion of Ukraine, with the uncertainties arising from this challenging environment producing high levels of volatility and broad declines across equities and fixed-income securities.

In June 2022, U.S. inflation peaked at above 9%, the highest level since the early 1980s. A host of factors contributed to this rise, including pandemic-related government stimulus and accommodative monetary policies, wage increases, supply-chain bottlenecks and commodity price spikes exacerbated by the invasion of Ukraine. The U.S. Federal Reserve (the "Fed") sought to bring inflation under control through an aggressive series of interest rates hikes, raising the upper end of the federal funds rate from 1.00% at the beginning of the reporting period to 4.00% as of November 30, 2022. Global central banks generally followed suit, albeit with milder rate increases. Economic growth slowed under the weight of rising prices and interest rates, with U.S. GDP (gross domestic product) contracting in five out of six months during the reporting period. While inflation appeared to respond, falling to just over 7% by the end of the reporting period, it remained well above the Fed's 2% target. Indications of persistently high inflation prompted the Fed Chair to caution in late November that monetary policy was likely to remain restrictive for some time to come.

Despite a rally in October and November, prompted by hopes that the pace of Fed rate increases might soon slow, the S&P 500<sup>®</sup> Index, a widely regarded benchmark of U.S. market performance, ended the reporting period in negative territory. Positive returns in industrials, consumer staples, energy, health care and financials were more than offset by declines in the Index's other six sectors, with communication services and real estate proving weakest. International stocks lagged compared to their U.S. counterparts, with some emerging markets, notably China, suffering particularly steep losses. A few markets, however, including India and Mexico,

gained ground. In fixed-income markets, bond prices broadly declined as yields rose along with interest rates. Short-term yields rose faster than long-term yields, producing a yield curve inversion shortly after the start of the reporting period. Long-term rates remained below short-term rates through the end of the reporting period, a condition widely viewed as a likely precursor to recession.

Today, investors in the United States continue to grapple with uncertainty regarding the Fed's ability to successfully bring inflation under control while also avoiding a deep recession. In light of the ongoing pandemic- and recovery-related economic shifts still unfolding domestically, it may take months for the results of the Fed's policy stance to be fully realized. At the same time, a multitude of other developments taking place on the global stage—from geopolitical and macroeconomic realignments to environmental transformations—are creating a complex market environment that will shape investment performance over the longer term. Those wishing to navigate this unsettled environment and to take advantage of opportunities where they exist, will need access to both market insights and the targeted investment tools necessary to translate those insights into informed portfolio positions.

At New York Life Investments, we've established a long track record of helping clients manage their portfolios in the face of uncertainty, volatility and change. You can count on us to continue investing in your success, providing the guidance, resources and investment solutions you need to achieve your goals. Thank you for trusting us to help you meet your investment needs.

Sincerely,

![](g343667imgc4ecfac42.jpg)

Kirk C. Lehneis<br> President

The opinions expressed are as of the date of this report and are subject to change. There is no guarantee that any forecast made will come to pass. This material does not constitute investment advice and is not intended as an endorsement of any specific investment. Past performance is no guarantee of future results.

Not part of the Semiannual Report

------

**Table of Contents**

---

| | |
|:---|:---|
| [Semiannual Report](#xx_a915eca7-d302-4b69-a79b-8317aabae4d1_1) |  |
| [Fund Performance and Statistics](#xx_998c0742-5a9f-4e8e-a3d7-f8043b28a11b_1) | &nbsp;&nbsp;5 |
| [Portfolio Management Discussion and Analysis](#xx_998c0742-5a9f-4e8e-a3d7-f8043b28a11b_4) | &nbsp;&nbsp;8 |
| [Portfolio of Investments](#xx_998c0742-5a9f-4e8e-a3d7-f8043b28a11b_6) | &nbsp;&nbsp;10 |
| [Financial Statements](#xx_998c0742-5a9f-4e8e-a3d7-f8043b28a11b_13) | &nbsp;&nbsp;17 |
| [Notes to Financial Statements](#xx_7ebddea4-4195-4dd5-99ca-5de1209e40c3_1) | &nbsp;&nbsp;22 |
| [Dividend Reinvestment Plan](#xx_e41aaef5-e35c-4efa-8596-23ff9da987fd_1) | &nbsp;&nbsp;29 |
| [Proxy Results](#xx_7559d27f-efad-4f83-a6e2-07a0ca9b5d9e_1) | &nbsp;&nbsp;30 |
| [Proxy Voting Policies and Procedures and Proxy Voting Record](#xx_7559d27f-efad-4f83-a6e2-07a0ca9b5d9e_1) | &nbsp;&nbsp;30 |
| [Shareholder Reports and Quarterly Portfolio Disclosure](#xx_7559d27f-efad-4f83-a6e2-07a0ca9b5d9e_1) | &nbsp;&nbsp;30 |

---

------

**Certain material in this report may include statements that constitute "forward-looking statements" under the U.S. securities laws. Forward-looking statements include, among other things, projections, estimates and information about possible or future results or events related to the Fund, market or regulatory developments. The views expressed herein are not guarantees of future performance or economic results and involve certain risks, uncertainties and assumptions that could cause actual outcomes and results to differ materially from the views expressed herein. The views expressed herein are subject to change at any time based upon economic, market, or other conditions and the Fund undertakes no obligation to update the views expressed herein.**

------

[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

Fund Performance and Statistics (Unaudited)

**Performance data quoted represents past performance of Common shares of the Fund. Past performance is no guarantee of future results. Because of market volatility and other factors, current performance may be lower or higher than the figures shown. Investment return and principal value will fluctuate. For performance information current to the most recent month-end, please visit newyorklifeinvestments.com/mmd.**

The performance table and graph do not reflect the deduction of taxes that a shareholder would pay on distributions or the sale of Fund shares.

![](g343667imgafa341983.jpg)

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Average Annual Total Returns for the Period-Ended November 30, 2022<sup>\*</sup>** | **Average Annual Total Returns for the Period-Ended November 30, 2022<sup>\*</sup>** | **Average Annual Total Returns for the Period-Ended November 30, 2022<sup>\*</sup>** | **Average Annual Total Returns for the Period-Ended November 30, 2022<sup>\*</sup>** | **Average Annual Total Returns for the Period-Ended November 30, 2022<sup>\*</sup>** |
|  | &nbsp;&nbsp;**Six <br> Months<sup>1</sup>** | &nbsp;&nbsp;**One <br> Year** | &nbsp;&nbsp;**Five <br> Years** | &nbsp;&nbsp;**Ten <br> Years** |
| Net Asset Value ("NAV")<sup>2</sup> | &nbsp;&nbsp;(4.42)% | &nbsp;&nbsp;(14.68)% | &nbsp;&nbsp;1.85% | &nbsp;&nbsp;3.85% |
| Market Price<sup>2</sup> | &nbsp;&nbsp;(7.41) | &nbsp;&nbsp;(15.85) | &nbsp;&nbsp;2.24 | &nbsp;&nbsp;3.98 |
| Bloomberg Municipal Bond Index<sup>3</sup> | &nbsp;&nbsp;(1.43) | &nbsp;&nbsp;&nbsp;&nbsp;(8.64) | &nbsp;&nbsp;1.40 | &nbsp;&nbsp;1.98 |
| Morningstar Muni National Long Category Average<sup>4</sup> | &nbsp;&nbsp;(5.18) | &nbsp;&nbsp;(17.08) | &nbsp;&nbsp;0.59 | &nbsp;&nbsp;2.33 |

---

\* Returns for indices reflect no deductions for fees, expenses or taxes, except for foreign withholding taxes where applicable. Results assume reinvestment of all dividends and capital gains. An investment cannot be made directly in an index.

1. Not annualized.

2. Total returns assume dividends and capital gains distributions are reinvested.

3. The Bloomberg Municipal Bond Index is considered representative of the broad market for investment-grade, tax-exempt bonds with a maturity of at least one year. Bonds subject to the alternative minimum tax or with floating or zero coupons are excluded.

4. The Morningstar Muni National Long Category Average is representative of funds that invest in bonds issued by various state and local governments to fund public projects. The income from these bonds is generally free from federal taxes. These portfolios have durations of more than 7 years. Results are based on average total returns of similar funds with all dividends and capital gain distributions reinvested.

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[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

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#### Fund Statistics as of November 30, 2022 (Unaudited)

---

| | | | |
|:---|:---|:---|:---|
| NYSE Symbol | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MMD | &nbsp;&nbsp;&nbsp;&nbsp;Premium/Discount <sup>1</sup> | &nbsp;&nbsp;&nbsp;&nbsp;(0.30)% |
| CUSIP | &nbsp;&nbsp;56064K100 | &nbsp;&nbsp;&nbsp;&nbsp;Total Net Assets (millions) | &nbsp;&nbsp;$472.2 |
| Inception Date | &nbsp;&nbsp;&nbsp;&nbsp;6/26/2012 | &nbsp;&nbsp;&nbsp;&nbsp;Total Managed Assets (millions)<sup>2</sup> | &nbsp;&nbsp;$779.6 |
| Market Price | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.89 | &nbsp;&nbsp;&nbsp;&nbsp;Leverage <sup>3</sup> | &nbsp;&nbsp;&nbsp;&nbsp;39.44% |
| NAV | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.94 | &nbsp;&nbsp;&nbsp;&nbsp;Percent of AMT Bonds<sup>4</sup> | &nbsp;&nbsp;&nbsp;&nbsp;12.15% |

---

1. Premium/Discount
 is the percentage (%) difference between the market price and the NAV. When the market price exceeds the NAV, the Fund is trading at a premium. When the market price is less than the NAV, the Fund is trading at a discount.

2. "Managed
 Assets" is defined as the Fund's total assets, minus the sum of its accrued liabilities (other than Fund liabilities incurred for the purpose of creating effective leverage (i.e. tender option bonds) or Fund liabilities related to
liquidation preference of any Preferred shares issued).

3. Leverage
is based on the use of proceeds received from tender option bond transactions, issuance of Preferred shares, funds borrowed from banks or other institutions or derivative transactions, expressed as a percentage of Managed Assets.

4. Alternative
 Minimum Tax ("AMT") is a separate tax computation under the Internal Revenue Code that, in effect, eliminates many deductions and credits and creates a tax liability for an individual who would otherwise pay little or no tax, expressed
as a percentage of Managed Assets.

------

#### Portfolio Composition as of November 30, 2022<sup>†</sup> (Unaudited)

---

| | |
|:---|:---|
| Illinois | &nbsp;&nbsp;&nbsp;&nbsp;17.8% |
| California | &nbsp;&nbsp;&nbsp;&nbsp;15.7 |
| New York | &nbsp;&nbsp;&nbsp;&nbsp;11.4 |
| Florida | &nbsp;&nbsp;&nbsp;&nbsp;10.2 |
| Puerto Rico<sup>1</sup> | &nbsp;&nbsp;&nbsp;&nbsp;8.3 |
| Michigan | &nbsp;&nbsp;&nbsp;&nbsp;6.3 |
| Pennsylvania | &nbsp;&nbsp;&nbsp;&nbsp;4.4 |
| Texas | &nbsp;&nbsp;&nbsp;&nbsp;3.8 |
| Nevada | &nbsp;&nbsp;&nbsp;&nbsp;3.1 |
| Massachusetts | &nbsp;&nbsp;&nbsp;&nbsp;2.4 |
| New Jersey | &nbsp;&nbsp;&nbsp;&nbsp;2.2 |
| U.S. Virgin Islands | &nbsp;&nbsp;&nbsp;&nbsp;2.1 |
| Utah | &nbsp;&nbsp;&nbsp;&nbsp;1.9 |
| South Carolina | &nbsp;&nbsp;&nbsp;&nbsp;1.8 |

---

---

| | |
|:---|:---|
| Guam | &nbsp;&nbsp;&nbsp;&nbsp;1.4% |
| Colorado | &nbsp;&nbsp;&nbsp;&nbsp;1.2 |
| Washington | &nbsp;&nbsp;&nbsp;&nbsp;0.9 |
| Wisconsin | &nbsp;&nbsp;&nbsp;&nbsp;0.7 |
| Virginia | &nbsp;&nbsp;&nbsp;&nbsp;0.6 |
| New Hampshire | &nbsp;&nbsp;&nbsp;&nbsp;0.6 |
| District of Columbia | &nbsp;&nbsp;&nbsp;&nbsp;0.3 |
| Nebraska | &nbsp;&nbsp;&nbsp;&nbsp;0.3 |
| Georgia | &nbsp;&nbsp;&nbsp;&nbsp;0.3 |
| Arizona | &nbsp;&nbsp;&nbsp;&nbsp;0.2 |
| Other Assets, Less Liabilities | &nbsp;&nbsp;&nbsp;&nbsp;2.1 |
|  | &nbsp;&nbsp;100.0% |

---

† As a
percentage of Managed Assets.

1. As
 of November 30, 2022, 73.3% of the Puerto Rico municipal securities held by the Fund were insured and all bonds continue to pay full principal and interest.

See Portfolio of Investments beginning on page 10 for specific holdings within these categories. The Fund's holdings are subject to change.

------

---

| | |
|:---|:---|
| **6** | **MainStay MacKay DefinedTerm Municipal Opportunities Fund** |

---

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[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

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#### Top Ten Holdings and/or Issuers Held as of November 30, 2022 (excluding short-term investments)# (Unaudited)
1. Chicago
O'Hare International Airport, 5.25%-5.75%, due 1/1/38–1/1/45 (a)

2. Regents
 of the University of California Medical Center Pooled, 5.00%, due 5/15/43–5/15/47

3. State
 of Illinois, 5.25%-5.50%, due 5/1/30–5/1/39

4. Los
 Angeles Department of Water & Power, 5.00%, due 7/1/42

5. Great
 Lakes Water Authority Sewage Disposal System, 5.00%, due 7/1/34 (a)

6. Orange
 County Convention Center, 4.00%, due 10/1/33

7. City
 of Chicago IL, 5.00%-6.00%, due 1/1/27–1/1/49

8. Puerto
 Rico Sales Tax Financing Corp., 4.55%-5.00%, due 7/1/40–7/1/58

9. County
 of Broward FL, 4.00%-5.50%, due 9/1/51–1/1/55 (a)

10. Michigan
 Finance Authority, 5.25%, due 12/1/41

# Some of these holdings have been transferred to a Tender Option Bond ("TOB") Issuer in exchange for TOB Residuals and cash. <br> (a) Municipal security may feature credit enhancements, such as bond insurance.

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#### Credit Quality as of November 30, 2022^ (Unaudited)
![](g343667imga7600aee4.jpg)

^ As a percentage of total investments.

Ratings apply to the underlying portfolio of bonds held by the Fund and are rated by an independent rating agency, such as Standard & Poor's ("S&P"), Moody's Investors Service, Inc. and/or Fitch Ratings, Inc. If the ratings provided by the ratings agencies differ, the higher rating will be utilized. If only one rating is provided, the available rating will be utilized. Securities that are unrated by the rating agencies are reflected as such in the breakdown. Unrated securities do not necessarily indicate low quality. S&P rates borrowers on a scale from AAA to D. AAA through BBB- represent investment grade, while BB+ through D represent non-investment grade.

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[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

Portfolio Management Discussion and Analysis (Unaudited)

Questions answered by portfolio managers Robert DiMella, CFA, John Loffredo, CFA, Michael Petty, Scott Sprauer, David Dowden and John Lawlor of MacKay Shields LLC, the Fund's Subadvisor.

#### How did MainStay MacKay DefinedTerm Municipal Opportunities Fund perform relative to its benchmark and peer group during the six months ended November 30, 2022?
For the six months ended November 30, 2022, MainStay MacKay DefinedTerm Municipal Opportunities Fund returned -4.42% based on net asset value applicable to Common shares and -7.41% based on market price. At net asset value and at market price, the Fund underperformed the -1.43% return of its benchmark, the Bloomberg Municipal Bond Index (the "Index"). At net asset value the Fund outperformed, and at market price underperformed, the -5.18% return of the Morningstar Muni National Long Category Average.<sup>1</sup>

#### What factors affected the Fund's relative performance during the reporting period?
During the reporting period, both municipal and U.S. Treasury rates rose, with the municipal yield curve<sup>2</sup> steepening as outflows persisted. As a result, ratios cheapened across the curve, most notably on the long end. The Fund's yield curve positioning undermined performance relative to the Index, as the increase in rates resulted in overweight exposure to bonds maturing in 13+ years detracting from relative performance. Underweight exposure to credits rated AA-<sup>3</sup> also detracted from relative performance, as did overweight exposure to bonds with coupons of 6%. From a geographic perspective, holdings in Florida bonds detracted from relative returns.

#### During the reporting period, were there any market events that materially impacted the Fund's performance or liquidity?
During the reporting period, markets extended their historic drawdown, driven by the combination of rising U.S. Treasury yields, ongoing monetary policy tightening and geopolitical uncertainty. The municipal market mirrored this broader sell-off, and many investors reacted by withdrawing money from their

municipal holdings. The municipal market experienced record outflows, which ultimately drove municipal rates higher.

#### How was the Fund's leverage strategy implemented during the reporting period?
During the reporting period, the Fund's leverage declined modestly to 39.44% of the Fund's managed assets. The Fund continued to exit positions in names that no longer represented spread-tightening<sup>4</sup> opportunities. The Fund also continued to execute tax loss swaps and reinvested in higher yielding bonds and structures with potential spread-tightening characteristics.

#### What was the Fund's duration<sup>5</sup> strategy during the reporting period?
The Fund held a neutral duration position relative to the Index. As of the end of the reporting period, the Fund's modified duration to worst<sup>6</sup> was 6.15 years compared to 6.09 years for the Index.

#### During the reporting period, which sectors were the strongest positive contributors to the Fund's relative performance and which sectors were particularly weak?
During the reporting period, underweight exposure to the water/sewer and housing sectors made positive contributions to performance, as did security selection among the electric names. (Contributions take weightings and total returns into account.) Conversely, the largest detractor from relative performance was underweight exposure and security selection in the transportation sector. Overweight exposure to the special tax sector also detracted from returns; however, strong security selection in the sector helped offset some of those losses.

#### How did the Fund's market segments change during the reporting period?
During the reporting period, the Fund increased sector exposure to electric, leasing and state general obligation bonds. In addition,

**1.** **See page 5 for more information on benchmark and peer group returns.** 

**2.** **The yield curve is a line that plots the yields of various securities of similar quality—typically U.S. Treasury issues—across a range of maturities. The U.S. Treasury yield curve serves as a benchmark for other debt and is used in economic forecasting.** 

**3.** **An obligation rated 'AA' by Standard & Poor's ("S&P") is deemed by S&P to differ from the highest-rated obligations only to a small degree. In the opinion of S&P, the obligor's capacity to meet its financial commitment on the obligation is very strong. Ratings from `AA' to `CCC' may be modified by the addition of a plus (+) or minus (-) sign to show relative standing within the major rating categories. When applied to Fund holdings, ratings are based solely on the creditworthiness of the bonds in the portfolio and are not meant to represent the security or safety of the Fund.** 

**4.** **The terms "spread" and "yield spread" may refer to the difference in yield between a security or type of security and comparable U.S. Treasury issues. The terms may also refer to the difference in yield between two specific securities or types of securities at a given time.** 

**5.** **Duration is a measure of the price sensitivity of a fixed-income investment to changes in interest rates. Duration is expressed as a number of years and is considered a more accurate sensitivity gauge than average maturity.** 

6. Modified duration is
inversely related to the approximate percentage change in price for a given change in yield. Duration to worst is the duration of a bond computed using the bond's nearest call date or maturity, whichever comes first. This measure ignores
future cash flow fluctuations due to embedded optionality.

8 MainStay MacKay DefinedTerm Municipal Opportunities Fund

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[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

the Fund increased its credit exposure to bonds rated AAA.<sup>7</sup> Furthermore, the Fund increased its state exposure to Illinois. Conversely, the Fund decreased its sector exposure to hospital and IDR/PCR (industry development revenue/pollution control revenue). In addition, the Fund slightly decreased its credit exposure to bonds rated BBB<sup>8</sup> and state exposure to Washington.

#### How was the Fund positioned at the end of the reporting period?
As of November 30, 2022, the Fund maintained overweight exposure to the long end of the yield curve. We believe there are more compelling ratios on the longer end of the curve, which may lend itself to outperformance over time. In addition, the Fund held overweight exposure to the special tax and electric sectors. Across states and territories, the Fund held overweight exposure to Illinois and Puerto bonds. From a credit perspective, the Fund held overweight exposure to non-rated bonds not held in the Index. As of the same date, the Fund held underweight exposure to the state and local general obligation sectors. The Fund also held underweight exposure to AAA-rated credits, as well as holdings from the state of New York.

7. An obligation rated
'AAA' has the highest rating assigned by S&P, and in the opinion of S&P, the obligor's capacity to meet its financial commitment on the obligation is extremely strong. When applied to Fund holdings, ratings are based solely
on the creditworthiness of the bonds in the portfolio and are not meant to represent the security or safety of the Fund.

8. An obligation rated
'BBB' by S&P is deemed by S&P to exhibit adequate protection parameters. In the opinion of S&P, however, adverse economic conditions or changing circumstances are more likely to lead to a weakened capacity of the obligor to
meet its financial commitment on the obligation. When applied to Fund holdings, ratings are based solely on the creditworthiness of the bonds in the portfolio and are not meant to represent the security or safety of the Fund.

The opinions expressed are those of the portfolio managers as of the date of this report and are subject to change. There is no guarantee that any forecasts will come to pass. This material does not constitute investment advice and is not intended as an endorsement of any specific investment.

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[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

Portfolio of Investments November 30, 2022<sup>†</sup> (Unaudited)

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Principal <br> Amount** | &nbsp;&nbsp;**Value** |
| **Municipal Bonds 161.8%** | **Municipal Bonds 161.8%** | **Municipal Bonds 161.8%** |
| **Arizona 0.3% (0.2% of Managed Assets)** | **Arizona 0.3% (0.2% of Managed Assets)** | **Arizona 0.3% (0.2% of Managed Assets)** |
| Industrial Development Authority of the City of Phoenix (The), Espiritu Community Development Corp., Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;6.25%, due 7/1/36 | &nbsp;&nbsp;&nbsp;$1730000 | &nbsp;&nbsp;$1627420 |
| **California 25.9% (15.7% of Managed Assets)** | **California 25.9% (15.7% of Managed Assets)** | **California 25.9% (15.7% of Managed Assets)** |
| Calexico Unified School District, Election of 2020, Unlimited General Obligation |  |  |
| &nbsp;&nbsp;&nbsp;Insured: BAM |  |  |
| &nbsp;&nbsp;&nbsp;3.00%, due 8/1/52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3600000 | &nbsp;&nbsp;&nbsp;&nbsp; 2690847 |
| California Municipal Finance Authority, LAX Integrated Express Solutions LLC, Revenue Bonds, Senior Lien |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 12/31/43 (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5500000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5563015 |
| California Municipal Finance Authority, United Airlines, Inc. Project, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 7/15/29 (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2305000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2237227 |
| City of Sacramento CA, Water, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 9/1/42 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19500000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19848563 |
| Los Angeles Department of Water & Power, Power System, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 7/1/42 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28900000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30503442 |
| Regents of the University of California Medical Center Pooled, Revenue Bonds (b) |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 5/15/47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10806444 |
| &nbsp;&nbsp;&nbsp;Series J |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 5/15/43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23260000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23356298 |
| Sacramento City Unified School District, Election of 2020, Unlimited General Obligation |  |  |
| &nbsp;&nbsp;&nbsp;Series A, Insured: BAM |  |  |
| &nbsp;&nbsp;&nbsp;5.50%, due 8/1/52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6708082 |
| San Diego County Regional Airport Authority, Revenue Bonds (a) |  |  |
| &nbsp;&nbsp;&nbsp;Series B |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 7/1/46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3250000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3337026 |

---

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Principal <br> Amount** | &nbsp;&nbsp;**Value** |
| **California** | **California** | **California** |
| San Diego County Regional Airport Authority, Revenue Bonds (a)<br> (continued) |  |  |
| &nbsp;&nbsp;&nbsp;Series B |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 7/1/51 | &nbsp;&nbsp;&nbsp;$2705000 | &nbsp;&nbsp;$2761752 |
| San Francisco City & County Airport Commission, International Airport, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series B |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 5/1/46 (a)(b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9500000 | &nbsp;&nbsp;&nbsp;&nbsp; 9621927 |
| Sweetwater Union High School District, Unlimited General Obligation |  |  |
| &nbsp;&nbsp;&nbsp;Insured: BAM |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 8/1/47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 5000000 | &nbsp;&nbsp;&nbsp;&nbsp; 4845128 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;122279751 |
| **Colorado 1.9% (1.2% of Managed Assets)** | **Colorado 1.9% (1.2% of Managed Assets)** | **Colorado 1.9% (1.2% of Managed Assets)** |
| City & County of Denver CO, Airport System, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.50%, due 11/15/35 (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3357577 |
| Copper Ridge Metropolitan District, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 12/1/39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3950000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3620998 |
| Sterling Ranch Community Authority Board, Metropolitan District No. 2, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;4.25%, due 12/1/50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;775244 |
| Sterling Ranch Community Authority Board, Metropolitan District No. 3, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A, Insured: MUN GOVT GTD |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 12/1/30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1315000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1341300 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9095119 |
| **District of Columbia 0.6% (0.3% of Managed Assets)** | **District of Columbia 0.6% (0.3% of Managed Assets)** | **District of Columbia 0.6% (0.3% of Managed Assets)** |
| Metropolitan Washington Airports Authority, Dulles Toll Road, Revenue Bonds, Second Lien |  |  |
| &nbsp;&nbsp;&nbsp;Series C, Insured: AGC |  |  |
| &nbsp;&nbsp;&nbsp;6.50%, due 10/1/41 (c) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2400000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2722275 |
| **Florida 16.9% (10.2% of Managed Assets)** | **Florida 16.9% (10.2% of Managed Assets)** | **Florida 16.9% (10.2% of Managed Assets)** |
| City of Miami Beach FL, Unlimited General Obligation |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 5/1/44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14620536 |

---

The notes to the financial statements are an integral part of, and should be read in conjunction with, the financial statements.

10 MainStay MacKay DefinedTerm Municipal Opportunities Fund

------

[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Principal <br> Amount** | &nbsp;&nbsp;**Value** |
| **Florida (continued)** | **Florida (continued)** | **Florida (continued)** |
| County of Broward FL, Convention Center Expansion Project, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 9/1/51 | &nbsp;&nbsp;&nbsp;$3500000 | &nbsp;&nbsp;$3128086 |
| &nbsp;&nbsp;&nbsp;Insured: BAM |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 9/1/51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2750000 | &nbsp;&nbsp;&nbsp;&nbsp; 2471029 |
| County of Broward FL, Convention Center Hotel, Revenue Bonds, First Tier |  |  |
| &nbsp;&nbsp;&nbsp;5.50%, due 1/1/55 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15600000 | &nbsp;&nbsp;&nbsp;&nbsp; 17347085 |
| County of Miami-Dade FL, Transit System, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 7/1/45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1750000 | &nbsp;&nbsp;&nbsp;&nbsp; 1882367 |
| &nbsp;&nbsp;&nbsp;5.00%, due 7/1/48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1750000 | &nbsp;&nbsp;&nbsp;&nbsp; 1871402 |
| JEA Electric System, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series C |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 10/1/37 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12980000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12996098 |
| Orange County Convention Center, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series B |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 10/1/33 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25478108 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;79794711 |
| **Georgia 0.5% (0.3% of Managed Assets)** | **Georgia 0.5% (0.3% of Managed Assets)** | **Georgia 0.5% (0.3% of Managed Assets)** |
| Municipal Electric Authority of Georgia, Plant Vogtle Units 3&4 Project, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 1/1/44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2470000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2354725 |
| **Guam 2.3% (1.4% of Managed Assets)** | **Guam 2.3% (1.4% of Managed Assets)** | **Guam 2.3% (1.4% of Managed Assets)** |
| Antonio B Won Pat International Airport Authority, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series C, Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;6.00%, due 10/1/34 (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2440000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3505905 |
| Guam Government Waterworks Authority, Water and Wastewater System, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;5.50%, due 7/1/43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7119596 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10625501 |
| **Illinois 29.4% (17.8% of Managed Assets)** | **Illinois 29.4% (17.8% of Managed Assets)** | **Illinois 29.4% (17.8% of Managed Assets)** |
| Chicago Board of Education, Unlimited General Obligation |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;7.00%, due 12/1/44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2880000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3060189 |

---

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Principal <br> Amount** | &nbsp;&nbsp;**Value** |
| **Illinois** | **Illinois** | **Illinois** |
| Chicago Board of Education, Dedicated Capital Improvement, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;5.75%, due 4/1/34 | &nbsp;&nbsp;&nbsp;$8000000 | &nbsp;&nbsp;$8422282 |
| Chicago Board of Education, Dedicated Capital Improvement, Unlimited General Obligation (d) |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;7.00%, due 12/1/46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4000000 | &nbsp;&nbsp;&nbsp;&nbsp; 4351484 |
| &nbsp;&nbsp;&nbsp;Series B |  |  |
| &nbsp;&nbsp;&nbsp;7.00%, due 12/1/42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3500000 | &nbsp;&nbsp;&nbsp;&nbsp; 3827474 |
| Chicago O'Hare International Airport, Revenue Bonds, Senior lien |  |  |
| &nbsp;&nbsp;&nbsp;Series A, Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;5.25%, due 1/1/45 (a)(b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31320612 |
| Chicago O'Hare International Airport, Customer Facility Charge, Revenue Bonds, Senior Lien |  |  |
| &nbsp;&nbsp;&nbsp;Insured: AGM-CR |  |  |
| &nbsp;&nbsp;&nbsp;5.75%, due 1/1/38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5007667 |
| City of Chicago IL, Unlimited General Obligation |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.25%, due 1/1/27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3045531 |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.50%, due 1/1/49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5071904 |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;6.00%, due 1/1/38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7180000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7465826 |
| &nbsp;&nbsp;&nbsp;Series E |  |  |
| &nbsp;&nbsp;&nbsp;5.50%, due 1/1/42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2014346 |
| City of Chicago IL, Wastewater Transmission, Revenue Bonds, Second Lien |  |  |
| &nbsp;&nbsp;&nbsp;Series C |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 1/1/32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7120000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7219469 |
| Metropolitan Pier & Exposition Authority, McCormick Place Expansion Project, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 6/15/57 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4665000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4649578 |
| &nbsp;&nbsp;&nbsp;Series B-1, Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;(zero coupon), due 6/15/43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3735535 |
| Sales Tax Securitization Corp., Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series C, Insured: BAM |  |  |
| &nbsp;&nbsp;&nbsp;5.25%, due 1/1/48 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11496066 |
| State of Illinois, Unlimited General Obligation |  |  |
| &nbsp;&nbsp;&nbsp;5.25%, due 7/1/31 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20123734 |

---

The notes to the financial statements are an integral part of, and should be read in conjunction with, the financial statements.

------

[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

Portfolio of Investments November 30, 2022<sup>†</sup> (Unaudited) (continued)

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Principal <br> Amount** | &nbsp;&nbsp;**Value** |
| **Illinois (continued)** | **Illinois (continued)** | **Illinois (continued)** |
| State of Illinois, Unlimited General Obligation (continued) |  |  |
| &nbsp;&nbsp;&nbsp;5.50%, due 5/1/30 | &nbsp;&nbsp;&nbsp;$2500000 | &nbsp;&nbsp;$2729799 |
| &nbsp;&nbsp;&nbsp;5.50%, due 5/1/39 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 8380000 | &nbsp;&nbsp;&nbsp;&nbsp; 8821122 |
| Will County School District No. 114 Manhattan, Unlimited General Obligation |  |  |
| &nbsp;&nbsp;&nbsp;Insured: BAM |  |  |
| &nbsp;&nbsp;&nbsp;5.50%, due 9/1/52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 6000000 | &nbsp;&nbsp;&nbsp;&nbsp; 6586045 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;138948663 |
| **Massachusetts 4.0% (2.4% of Managed Assets)** | **Massachusetts 4.0% (2.4% of Managed Assets)** | **Massachusetts 4.0% (2.4% of Managed Assets)** |
| Commonwealth of Massachusetts, Unlimited General Obligation |  |  |
| &nbsp;&nbsp;&nbsp;Series C |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 10/1/52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3500000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3810056 |
| Massachusetts Development Finance Agency, North Eastern University Issue, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 3/1/44 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7072393 |
| Massachusetts School Building Authority, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 8/15/45 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7500000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8142545 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19024994 |
| **Michigan 10.4% (6.3% of Managed Assets)** | **Michigan 10.4% (6.3% of Managed Assets)** | **Michigan 10.4% (6.3% of Managed Assets)** |
| Great Lakes Water Authority Sewage Disposal System, Revenue Bonds, Senior Lien |  |  |
| &nbsp;&nbsp;&nbsp;Series B, Insured: AGM-CR |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 7/1/34 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24940000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26629334 |
| Michigan Finance Authority, Trinity Health Group, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series 2016MI |  |  |
| &nbsp;&nbsp;&nbsp;5.25%, due 12/1/41 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21630000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22388164 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49017498 |
| **Nebraska 0.5% (0.3% of Managed Assets)** | **Nebraska 0.5% (0.3% of Managed Assets)** | **Nebraska 0.5% (0.3% of Managed Assets)** |
| Omaha Public Power District, Electric System, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 2/1/47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2300000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2536445 |

---

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Principal <br> Amount** | &nbsp;&nbsp;**Value** |
| **Nevada 5.1% (3.1% of Managed Assets)** | **Nevada 5.1% (3.1% of Managed Assets)** | **Nevada 5.1% (3.1% of Managed Assets)** |
| County of Clark NV, Regional Transportation Commission of Southern Nevada Motor Fuel Tax, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;3.00%, due 7/1/42 | &nbsp;&nbsp;&nbsp;$4090000 | &nbsp;&nbsp;$3323186 |
| Las Vegas Convention & Visitors Authority, Convention Center Expansion, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series B |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 7/1/43 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20000000 | &nbsp;&nbsp;&nbsp;&nbsp; 20754808 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24077994 |
| **New Hampshire 1.0% (0.6% of Managed Assets)** | **New Hampshire 1.0% (0.6% of Managed Assets)** | **New Hampshire 1.0% (0.6% of Managed Assets)** |
| Manchester Housing and Redevelopment Authority, Inc., Meals & Rooms Tax, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series B, Insured: ACA |  |  |
| &nbsp;&nbsp;&nbsp;(zero coupon), due 1/1/24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4740000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4503700 |
| **New Jersey 3.7% (2.2% of Managed Assets)** | **New Jersey 3.7% (2.2% of Managed Assets)** | **New Jersey 3.7% (2.2% of Managed Assets)** |
| New Jersey Economic Development Authority, Continental Airlines, Inc. Project, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;5.25%, due 9/15/29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5016661 |
| New Jersey Economic Development Authority, New Jersey Transit Transportation Project, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 11/1/39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3400000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3233167 |
| New Jersey Transportation Trust Fund Authority, Transportation Program, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series AA |  |  |
| &nbsp;&nbsp;&nbsp;5.25%, due 6/15/43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4595000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4774603 |
| &nbsp;&nbsp;&nbsp;Series BB |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 6/15/44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;917915 |
| State of New Jersey, COVID-19 General Obligation Emergency Bonds, Unlimited General Obligation |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 6/1/31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2900000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3073696 |
| Tobacco Settlement Financing Corp., Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 6/1/46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;294308 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17310350 |

---

The notes to the financial statements are an integral part of, and should be read in conjunction with, the financial statements.

12 MainStay MacKay DefinedTerm Municipal Opportunities Fund

------

[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Principal <br> Amount** | &nbsp;&nbsp;**Value** |
| **New York 18.7% (11.4% of Managed Assets)** | **New York 18.7% (11.4% of Managed Assets)** | **New York 18.7% (11.4% of Managed Assets)** |
| Metropolitan Transportation Authority, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A-1 |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 11/15/45 (b) | &nbsp;&nbsp;&nbsp;$22695000 | &nbsp;&nbsp;$22316665 |
| New York Liberty Development Corp., 3 World Trade Center Project, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Class 3 |  |  |
| &nbsp;&nbsp;&nbsp;7.25%, due 11/15/44 (b)(d) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10890000 | &nbsp;&nbsp;&nbsp;&nbsp; 11005324 |
| New York State Dormitory Authority, State Personal Income Tax, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 3/15/41 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9450000 | &nbsp;&nbsp;&nbsp;&nbsp; 10300710 |
| &nbsp;&nbsp;&nbsp;Series E |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 3/15/38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2018420 |
| New York State Housing Finance Agency, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series P |  |  |
| &nbsp;&nbsp;&nbsp;3.15%, due 11/1/54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2375000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1715079 |
| New York Transportation Development Corp., LaGuardia Airport Terminal B Redevelopment Project, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A, Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 7/1/36 (a)(b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19172438 |
| Onondaga County Trust for Cultural Resources, Syracuse University Project, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 12/1/47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4742665 |
| Port Authority of New York & New Jersey, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;5.50%, due 8/1/52 (a)(b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10795993 |
| Riverhead Industrial Development Agency, Riverhead Charter School, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;7.00%, due 8/1/43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3395000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3456489 |
| Triborough Bridge & Tunnel Authority, Payroll Mobility Tax, Revenue Bonds, Senior Lien |  |  |
| &nbsp;&nbsp;&nbsp;Series D-2 |  |  |
| &nbsp;&nbsp;&nbsp;5.25%, due 5/15/47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2700000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2993933 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;88517716 |

---

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Principal <br> Amount** | &nbsp;&nbsp;**Value** |
| **Pennsylvania 7.3% (4.4% of Managed Assets)** | **Pennsylvania 7.3% (4.4% of Managed Assets)** | **Pennsylvania 7.3% (4.4% of Managed Assets)** |
| Allentown Neighborhood Improvement Zone Development Authority, City Center Project, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 5/1/42 (d) | &nbsp;&nbsp;&nbsp;$1000000 | &nbsp;&nbsp;$908002 |
| Commonwealth Financing Authority, Tobacco Master Settlement Payment, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 6/1/39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2370000 | &nbsp;&nbsp;&nbsp;&nbsp; 2376677 |
| Pennsylvania Economic Development Financing Authority, Capital Region Parking System, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series B, Insured: County Guaranteed |  |  |
| &nbsp;&nbsp;&nbsp;6.00%, due 7/1/53 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14260000 | &nbsp;&nbsp;&nbsp;&nbsp; 14596420 |
| Pennsylvania Turnpike Commission, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A, Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 12/1/49 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7470000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7171252 |
| Philadelphia Authority for Industrial Development, Nueva Esperanza, Inc., Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;8.20%, due 12/1/43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2008639 |
| Southeastern Pennsylvania Transportation Authority, Asset Improvement Program, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;5.25%, due 6/1/43 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6500000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7218508 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;34279498 |
| **Puerto Rico 13.8% (8.3% of Managed Assets)** | **Puerto Rico 13.8% (8.3% of Managed Assets)** | **Puerto Rico 13.8% (8.3% of Managed Assets)** |
| Children's Trust Fund, Asset-Backed, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;5.50%, due 5/15/39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12965000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12932626 |
| Commonwealth of Puerto Rico, Restructured, Unlimited General Obligation |  |  |
| &nbsp;&nbsp;&nbsp;Series A-1 |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 7/1/33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8500000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7406390 |
| Puerto Rico Electric Power Authority, Revenue Bonds (e) |  |  |
| &nbsp;&nbsp;&nbsp;Series DDD, Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;3.625%, due 7/1/23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;755000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;749875 |
| &nbsp;&nbsp;&nbsp;Series DDD, Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;3.65%, due 7/1/24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2830000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2778062 |
| &nbsp;&nbsp;&nbsp;Series PP, Insured: NATL-RE |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 7/1/24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1130000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1134539 |
| &nbsp;&nbsp;&nbsp;Series PP, Insured: NATL-RE |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 7/1/25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;165000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;165663 |

---

The notes to the financial statements are an integral part of, and should be read in conjunction with, the financial statements.

------

[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

Portfolio of Investments November 30, 2022<sup>†</sup> (Unaudited) (continued)

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Principal <br> Amount** | &nbsp;&nbsp;**Value** |
| **Puerto Rico (continued)** | **Puerto Rico (continued)** | **Puerto Rico (continued)** |
| Puerto Rico Electric Power Authority, Revenue Bonds (e) (continued) |  |  |
| &nbsp;&nbsp;&nbsp;Series TT, Insured: AGM-CR |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 7/1/27 | &nbsp;&nbsp;&nbsp;$310000 | &nbsp;&nbsp;$312075 |
| Puerto Rico Highway & Transportation Authority, Revenue Bonds (e) |  |  |
| &nbsp;&nbsp;&nbsp;Series AA-1, Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;4.95%, due 7/1/26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 5575000 | &nbsp;&nbsp;&nbsp;&nbsp; 5574774 |
| &nbsp;&nbsp;&nbsp;Series D, Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 7/1/32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 960000 | &nbsp;&nbsp;&nbsp;&nbsp; 955218 |
| &nbsp;&nbsp;&nbsp;Series N, Insured: AMBAC |  |  |
| &nbsp;&nbsp;&nbsp;5.25%, due 7/1/31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3485000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3447100 |
| &nbsp;&nbsp;&nbsp;Series N, Insured: AMBAC |  |  |
| &nbsp;&nbsp;&nbsp;5.50%, due 7/1/29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1025000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1034765 |
| Puerto Rico Municipal Finance Agency, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A, Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 8/1/27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2770000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2788537 |
| &nbsp;&nbsp;&nbsp;Series A, Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 8/1/30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1685000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1696276 |
| Puerto Rico Sales Tax Financing Corp., Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A-1 |  |  |
| &nbsp;&nbsp;&nbsp;4.55%, due 7/1/40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2500000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2328326 |
| &nbsp;&nbsp;&nbsp;Series A-1 |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 7/1/58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22940000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21765718 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;65069944 |
| **South Carolina 2.9% (1.8% of Managed Assets)** | **South Carolina 2.9% (1.8% of Managed Assets)** | **South Carolina 2.9% (1.8% of Managed Assets)** |
| South Carolina Public Service Authority, Santee Cooper, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A, Insured: BAM |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 12/1/52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4569664 |
| &nbsp;&nbsp;&nbsp;Series E, Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;5.75%, due 12/1/52 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8500000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9335303 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13904967 |
| **Texas 6.3% (3.8% of Managed Assets)** | **Texas 6.3% (3.8% of Managed Assets)** | **Texas 6.3% (3.8% of Managed Assets)** |
| City of Georgetown TX, Utility System, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Insured: AGM |  |  |
| &nbsp;&nbsp;&nbsp;5.25%, due 8/15/52 (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7500000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8161280 |
| City of Lubbock TX, Electric Light & Power System, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Insured: AGM-CR |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 4/15/51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9322256 |

---

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Principal <br> Amount** | &nbsp;&nbsp;**Value** |
| **Texas** | **Texas** | **Texas** |
| Harris County-Houston Sports Authority, Revenue Bonds, Senior Lien |  |  |
| &nbsp;&nbsp;&nbsp;Series A, Insured: AGM, NATL-RE |  |  |
| &nbsp;&nbsp;&nbsp;(zero coupon), due 11/15/38 | &nbsp;&nbsp;&nbsp;$175000 | &nbsp;&nbsp;$74437 |
| Harris County-Houston Sports Authority, Revenue Bonds, Junior Lien |  |  |
| &nbsp;&nbsp;&nbsp;Series H, Insured: NATL-RE |  |  |
| &nbsp;&nbsp;&nbsp;(zero coupon), due 11/15/28 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 50000 | &nbsp;&nbsp;&nbsp;&nbsp; 38774 |
| &nbsp;&nbsp;&nbsp;Series H, Insured: NATL-RE |  |  |
| &nbsp;&nbsp;&nbsp;(zero coupon), due 11/15/38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 260000 | &nbsp;&nbsp;&nbsp;&nbsp; 109984 |
| San Antonio Water System, Water System, Revenue Bonds, Junior Lien |  |  |
| &nbsp;&nbsp;&nbsp;Series B |  |  |
| &nbsp;&nbsp;&nbsp;5.25%, due 5/15/52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6657450 |
| Texas Water Development Board, State Water Implementation, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 10/15/45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5212552 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29576733 |
| **U.S. Virgin Islands 3.5% (2.1% of Managed Assets)** | **U.S. Virgin Islands 3.5% (2.1% of Managed Assets)** | **U.S. Virgin Islands 3.5% (2.1% of Managed Assets)** |
| Matching Fund Special Purpose Securitization Corp., United States Virgin Islands Federal Excise Tax, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 10/1/30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1570000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1619944 |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 10/1/32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1570000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1618753 |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 10/1/39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4710000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4749665 |
| Virgin Islands Public Finance Authority, Gross Receipts Taxes Loan, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 10/1/29 (d) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2980000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2876858 |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 10/1/32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3020000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2853125 |
| &nbsp;&nbsp;&nbsp;Series A, Insured: AGM-CR |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 10/1/32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2690000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2691409 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16409754 |
| **Utah 3.1% (1.9% of Managed Assets)** | **Utah 3.1% (1.9% of Managed Assets)** | **Utah 3.1% (1.9% of Managed Assets)** |
| City of Salt Lake UT, International Airport, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 7/1/47 (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3036799 |

---

The notes to the financial statements are an integral part of, and should be read in conjunction with, the financial statements.

14 MainStay MacKay DefinedTerm Municipal Opportunities Fund

------

[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Principal <br> Amount** | &nbsp;&nbsp;**Value** |
| **Utah (continued)** | **Utah (continued)** | **Utah (continued)** |
| Intermountain Power Agency, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 7/1/43 (b) | &nbsp;&nbsp;&nbsp;$10580000 | &nbsp;&nbsp;$11637754 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14674553 |
| **Virginia 1.0% (0.6% of Managed Assets)** | **Virginia 1.0% (0.6% of Managed Assets)** | **Virginia 1.0% (0.6% of Managed Assets)** |
| Tobacco Settlement Financing Corp., Asset-Backed, Revenue Bonds, Senior Lien |  |  |
| &nbsp;&nbsp;&nbsp;Series B-1 |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 6/1/47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 5000000 | &nbsp;&nbsp;&nbsp;&nbsp; 4665770 |
| **Washington 1.5% (0.9% of Managed Assets)** | **Washington 1.5% (0.9% of Managed Assets)** | **Washington 1.5% (0.9% of Managed Assets)** |
| State of Washington, Various Purpose, Unlimited General Obligation |  |  |
| &nbsp;&nbsp;&nbsp;Series C |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 2/1/46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6500000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7110138 |
| Washington State Housing Finance Commission, Single Family Program, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series 1N |  |  |
| &nbsp;&nbsp;&nbsp;4.00%, due 6/1/49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;105000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;105095 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7215233 |
| **Wisconsin 1.2% (0.7% of Managed Assets)** | **Wisconsin 1.2% (0.7% of Managed Assets)** | **Wisconsin 1.2% (0.7% of Managed Assets)** |
| Public Finance Authority, Bancroft NeuroHealth Project, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 6/1/36 (d) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;476857 |
| Public Finance Authority, Ultimate Medical Academy Project, Revenue Bonds |  |  |
| &nbsp;&nbsp;&nbsp;Series A |  |  |
| &nbsp;&nbsp;&nbsp;5.00%, due 10/1/39 (d) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5750000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5311758 |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5788615 |
| Total Investments<br> (Cost $760,071,065) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;161.8% | &nbsp;&nbsp;&nbsp;&nbsp;764021929 |
| Floating Rate Note Obligations (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(64.6) | &nbsp;&nbsp;&nbsp;&nbsp;(304950000) |
| Other Assets, Less Liabilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.8 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13088072 |
|  Net Assets Applicable to Common Shares | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100.0% | &nbsp;&nbsp;$472160001 |

---

† Percentages
indicated are based on Fund net assets applicable to Common shares.

(a) Interest
on these securities was subject to alternative minimum tax.

(b) All
 or portion of principal amount transferred to a Tender Option Bond ("TOB") Issuer in exchange for TOB Residuals and cash.

(c) Step
coupon—Rate shown was the rate in effect as of November 30, 2022.

(d) May be
sold to institutional investors only under Rule 144A or securities offered pursuant to Section 4(a)(2) of the Securities Act of 1933, as amended.

(e) Bond
insurance is paying principal and interest, since the issuer is in default.

(f) Face
 value of Floating Rate Notes issued in TOB transactions.

"Managed Assets" is defined as the Fund's total assets, minus the sum of its accrued liabilities (other than Fund liabilities incurred for the purpose of creating effective leverage (i.e. tender option bonds) or Fund liabilities related to liquidation preference of any preferred shares issued), which was $779,631,576 as of November 30, 2022.

---

| |
|:---|
| Abbreviation(s): |
| ACA—ACA Financial Guaranty Corp. |
| AGC—Assured Guaranty Corp. |
| AGM—Assured Guaranty Municipal Corp. |
| AMBAC—Ambac Assurance Corp. |
| BAM—Build America Mutual Assurance Co. |
| CR—Custodial Receipts |
| MUN GOVT GTD—Municipal Government Guaranteed |
| NATL-RE—National Public Finance Guarantee Corp. |

---

The notes to the financial statements are an integral part of, and should be read in conjunction with, the financial statements.

------

[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

Portfolio of Investments November 30, 2022<sup>†</sup> (Unaudited) (continued)

The following is a summary of the fair valuations according to the inputs used as of November 30, 2022, for valuing the Fund's assets:

---

| | | | | |
|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;**Description** | &nbsp;&nbsp;**Quoted <br> Prices in<br> Active<br> Markets for<br> Identical<br> Assets<br> (Level 1)** | &nbsp;&nbsp;**Significant <br> Other<br> Observable<br> Inputs<br> (Level 2)** | &nbsp;&nbsp;**Significant <br> Unobservable<br> Inputs<br> (Level 3)** | &nbsp;&nbsp;**Total** |
| **Asset Valuation Inputs** |  |  |  |  |
| Investments in Securities (a) |  |  |  |  |
| Municipal Bonds | &nbsp;&nbsp;$— | &nbsp;&nbsp; $764021929 | &nbsp;&nbsp;$— | &nbsp;&nbsp; $764021929 |

---

(a) For
 a complete listing of investments and their industries, see the Portfolio of Investments.

The notes to the financial statements are an integral part of, and should be read in conjunction with, the financial statements.

16 MainStay MacKay DefinedTerm Municipal Opportunities Fund

------

[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

Statement of Assets and Liabilities as of November 30, 2022 (Unaudited)

---

| | |
|:---|:---|
| **Assets** | **Assets** |
| Investment in securities, at value<br> (identified cost $760,071,065) | $764021929 |
| Cash | &nbsp;&nbsp;&nbsp;&nbsp;3835320 |
| Receivables: |  |
| &nbsp;&nbsp;&nbsp;Interest | &nbsp;&nbsp;&nbsp;&nbsp;11572929 |
| &nbsp;&nbsp;&nbsp;Investment securities sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;678592 |
| Other assets | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5500 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total assets | &nbsp;&nbsp;780114270 |
| **Liabilities** | **Liabilities** |
| Payable for Floating Rate Note Obligations | &nbsp;&nbsp;304950000 |
| Payables: |  |
| &nbsp;&nbsp;&nbsp;Manager (See Note 3) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;376862 |
| &nbsp;&nbsp;&nbsp;Professional fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35449 |
| &nbsp;&nbsp;&nbsp;Transfer agent | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5513 |
| &nbsp;&nbsp;&nbsp;Custodian | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5395 |
| &nbsp;&nbsp;&nbsp;Shareholder communication | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5351 |
| Accrued expenses | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46952 |
| Interest expense and fees payable | &nbsp;&nbsp;&nbsp;&nbsp;2528747 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total liabilities | &nbsp;&nbsp;307954269 |
| Net assets applicable to Common shares | $472160001 |
| Common shares outstanding | &nbsp;&nbsp;&nbsp;&nbsp;27875160 |
| Net asset value per Common share (Net assets applicable to Common shares divided by Common shares outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.94 |
| **Net Assets Applicable to Common Shares Consist of** | **Net Assets Applicable to Common Shares Consist of** |
| Common shares, $0.001 par value per share, unlimited number of shares authorized | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$27875 |
| Additional paid-in-capital | &nbsp;&nbsp;530908223 |
|  | &nbsp;&nbsp;530936098 |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;(58776097) |
| Net assets applicable to Common shares | $472160001 |

---

The notes to the financial statements are an integral part of, and should be read in conjunction with, the financial statements.

------

[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

Statement of Operations for the six months ended November 30, 2022 (Unaudited)

---

| | |
|:---|:---|
| **Investment Income (Loss)** | **Investment Income (Loss)** |
| **Income** |  |
| &nbsp;&nbsp;&nbsp;Interest | $14768654 |
| **Expenses** |  |
| &nbsp;&nbsp;&nbsp;Interest expense and fees | &nbsp;&nbsp;&nbsp;&nbsp;3405420 |
| &nbsp;&nbsp;&nbsp;Manager (See Note 3) | &nbsp;&nbsp;&nbsp;&nbsp;2393561 |
| &nbsp;&nbsp;&nbsp;Professional fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;78928 |
| &nbsp;&nbsp;&nbsp;Shareholder communication | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27939 |
| &nbsp;&nbsp;&nbsp;Transfer agent | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19576 |
| &nbsp;&nbsp;&nbsp;Custodian | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18418 |
| &nbsp;&nbsp;&nbsp;Trustees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5798 |
| &nbsp;&nbsp;&nbsp;Miscellaneous | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;34903 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total expenses | &nbsp;&nbsp;&nbsp;&nbsp;5984543 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;8784111 |
| **Realized and Unrealized Gain (Loss)** | **Realized and Unrealized Gain (Loss)** |
| Net realized gain (loss) on investments | &nbsp;&nbsp;(23493786) |
| Net change in unrealized appreciation (depreciation)<br> on investments | &nbsp;&nbsp;&nbsp;&nbsp;(8117372) |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;(31611158) |
| Net increase (decrease) in net assets to Common shares<br> resulting from operations | $(22827047) |

---

The notes to the financial statements are an integral part of, and should be read in conjunction with, the financial statements.

18 MainStay MacKay DefinedTerm Municipal Opportunities Fund

------

[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

Statements of Changes in Net Assets<br> for the six months ended November 30, 2022 (Unaudited) and the year ended May 31, 2022

---

| | | |
|:---|:---|:---|
|  | **Six months <br> ended<br> November 30,<br> 2022** | &nbsp;&nbsp;**Year <br> ended<br> May 31,<br> 2022** |
| **Increase (Decrease) in Net Assets Applicable to Common Shares** | **Increase (Decrease) in Net Assets Applicable to Common Shares** | **Increase (Decrease) in Net Assets Applicable to Common Shares** |
| Operations: |  |  |
| &nbsp;&nbsp;&nbsp;Net investment income (loss) | &nbsp;&nbsp;&nbsp;$8784111 | &nbsp;&nbsp;$25880112 |
| &nbsp;&nbsp;&nbsp;Net realized gain (loss) | &nbsp;&nbsp;&nbsp;(23493786) | &nbsp;&nbsp;&nbsp;&nbsp;(18321721) |
| &nbsp;&nbsp;&nbsp;Net change in unrealized appreciation (depreciation) | &nbsp;&nbsp;&nbsp;&nbsp;(8117372) | &nbsp;&nbsp;&nbsp;&nbsp;(62585644) |
| &nbsp;&nbsp;&nbsp;Net increase (decrease) in net assets applicable to Common shares resulting from operations | &nbsp;&nbsp;&nbsp;(22827047) | &nbsp;&nbsp;&nbsp;&nbsp;(55027253) |
| Distributions to Common shareholders | &nbsp;&nbsp;&nbsp;(14212598) | &nbsp;&nbsp;&nbsp;&nbsp;(28372977) |
| Capital share transactions<br> (Common shares): |  |  |
| &nbsp;&nbsp;&nbsp;Net proceeds issued to shareholders resulting from reinvestment of dividends | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;388959 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1559157 |
| Net increase (decrease) in net assets applicable to Common shares | &nbsp;&nbsp;&nbsp;(36650686) | &nbsp;&nbsp;&nbsp;&nbsp;(81841073) |
| **Net Assets Applicable to Common Shares** | **Net Assets Applicable to Common Shares** | **Net Assets Applicable to Common Shares** |
| Beginning of period | &nbsp;&nbsp;508810687 | &nbsp;&nbsp;&nbsp;&nbsp;590651760 |
| End of period | $472160001 | &nbsp;&nbsp;$508810687 |

---

The notes to the financial statements are an integral part of, and should be read in conjunction with, the financial statements.

------

[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

Statement of Cash Flows<br> for the six months ended November 30, 2022 (Unaudited)

---

| | |
|:---|:---|
| **Cash Flows From (Used in) Operating Activities:** | **Cash Flows From (Used in) Operating Activities:** |
| Net decrease in net assets resulting from operations | &nbsp;&nbsp;$(22827047) |
| Adjustments to reconcile net increase in net assets resulting from operations to net cash used in operating activities: |  |
| &nbsp;&nbsp;&nbsp;Investments purchased | &nbsp;&nbsp;(239169782) |
| &nbsp;&nbsp;&nbsp;Investments sold | &nbsp;&nbsp;&nbsp;263552348 |
| &nbsp;&nbsp;&nbsp;Amortization (accretion) of discount and premium, net | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3687921 |
| &nbsp;&nbsp;&nbsp;Increase in investment securities sold receivable | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(678592) |
| &nbsp;&nbsp;&nbsp;Decrease in interest receivable | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59460 |
| &nbsp;&nbsp;&nbsp;Decrease in other assets | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25128 |
| &nbsp;&nbsp;&nbsp;Decrease in due to custodian | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(621048) |
| &nbsp;&nbsp;&nbsp;Decrease in professional fees payable | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(72963) |
| &nbsp;&nbsp;&nbsp;Decrease in custodian payable | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(9507) |
| &nbsp;&nbsp;&nbsp;Decrease in shareholder communication payable | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(11764) |
| &nbsp;&nbsp;&nbsp;Decrease in due to Trustees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(18) |
| &nbsp;&nbsp;&nbsp;Decrease in due to manager | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(38277) |
| &nbsp;&nbsp;&nbsp;Increase in due to transfer agent | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4544 |
| &nbsp;&nbsp;&nbsp;Increase in accrued expenses | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7598 |
| &nbsp;&nbsp;&nbsp;Increase in interest expense and fees payable | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1215097 |
| &nbsp;&nbsp;&nbsp;Net realized loss from investments | &nbsp;&nbsp;&nbsp;&nbsp;23493786 |
| &nbsp;&nbsp;&nbsp;Net change in unrealized (appreciation) depreciation on unaffiliated investments | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8117372 |
| Net cash from operating activities | &nbsp;&nbsp;&nbsp;&nbsp;36734256 |
| **Cash Flows From (Used in) Financing Activities:** | **Cash Flows From (Used in) Financing Activities:** |
| Net proceeds resulting from reinvestment of dividends | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;523919 |
| Proceeds from floating rate note obligations | &nbsp;&nbsp;&nbsp;&nbsp;76675000 |
| Payments on floating rate note obligations | &nbsp;&nbsp;&nbsp;&nbsp;(98470000) |
| Cash distributions paid, net of change in Common share dividend payable | &nbsp;&nbsp;&nbsp;&nbsp;(14212598) |
| Net cash used in financing activities | &nbsp;&nbsp;&nbsp;&nbsp;(35483679) |
| Net increase in cash | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1250577 |
| Cash at beginning of period | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2584743 |
| Cash at end of period | &nbsp;&nbsp;&nbsp;&nbsp;$3835320 |

---

The notes to the financial statements are an integral part of, and should be read in conjunction with, the financial statements.

20 MainStay MacKay DefinedTerm Municipal Opportunities Fund

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Financial Highlights selected per share data and ratios

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Six months<br> ended<br> November 30,<br> 2022<sup>\*</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;**Year Ended May 31,** | &nbsp;&nbsp;&nbsp;&nbsp;**Year Ended May 31,** | &nbsp;&nbsp;&nbsp;&nbsp;**Year Ended May 31,** | &nbsp;&nbsp;&nbsp;&nbsp;**Year Ended May 31,** | &nbsp;&nbsp;&nbsp;&nbsp;**Year Ended May 31,** |
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Six months<br> ended<br> November 30,<br> 2022<sup>\*</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;**2022** | &nbsp;&nbsp;&nbsp;&nbsp;**2021** | &nbsp;&nbsp;&nbsp;&nbsp;**2020** | &nbsp;&nbsp;&nbsp;&nbsp;**2019** | &nbsp;&nbsp;&nbsp;&nbsp;**2018** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net asset value at beginning of period applicable to Common shares | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$21.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.79 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.14 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.93 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.05 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.14) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2.90) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.59) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00‡ |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.82) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.97) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.05 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Dividends and distributions to Common shareholders | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.02) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.02) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.02) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.03) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.08) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net asset value at end of period applicable to Common shares | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$21.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.79 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.11 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Market price at end of period applicable to Common shares | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$22.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.65 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.41 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total investment return on market price (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(7.41)% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(13.62)% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.79% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.62% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.05% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.88% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total investment return on net asset value (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.42)% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(9.68)% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.82% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.94% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.80% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.31% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Ratios (to average net assets of Common shareholders)/<br> Supplemental Data:** |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.65%†† | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.56% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.88% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.44% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.03% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.21% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net expenses (including interest expense and fees) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.49%†† | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.79% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.64% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.33% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.47% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.11% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interest expense and fees (b) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.42%†† | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.76% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.61% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.31% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.45% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.10% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Portfolio Turnover Rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38%(c) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net assets applicable to Common shareholders at end of period (in 000's) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$472160 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$508811 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$590652 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$547744 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$563098 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$554332 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Preferred shares outstanding at $100,000 liquidation preference,<br> end of period (in 000's) (d)(e) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$70000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$70000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$70000 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Assets coverage per Preferred share, end of period (d)(e) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;$882,491(f) | &nbsp;&nbsp;&nbsp;&nbsp;$904,426(f) | &nbsp;&nbsp;&nbsp;&nbsp;$891,903(f) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Average market value per Preferred share:** |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Series A (d) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$100000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$100000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$100006 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Series B (e) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$99999 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$100000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$100000 |

---

---

| | |
|:---|:---|
| \* | Unaudited. |
| ‡ | Less than one cent per share. |
| †† | Annualized. |
| (a) | Total investment return on market price is calculated assuming a purchase of a Common share at the market price on the first day and a sale on the last day business day of each month. Dividends and distributions are assumed to be reinvested at prices obtained under the Fund's dividend reinvestment plan. Total investment return on net asset value reflects the changes in net asset value during each period and assumes the reinvestment of dividends and distributions at net asset value on the last business day of each month. This percentage may be different from the total investment return on market price, due to differences between the market price and the net asset value. For periods less than one year, total investment return is not annualized. |
| (b) | Interest expense and fees relate to the costs of tender option bond transactions (See Note 2(G)) and the issuance of fixed rate municipal term preferred shares, where applicable, for the six months ended November 30, 2022 and for years ended May 31, 2022, 2021, 2020, 2019 and 2018, respectively. |
| (c) | The portfolio turnover rate includes variable rate demand notes. |
| (d) | Redeemed on June 15, 2020. |
| (e) | Redeemed on December 15, 2020. |
| (f) | Calculated by subtracting the Fund's total liabilities (not including the Preferred shares) from the Fund's total assets, and dividing the result by the number of Preferred shares outstanding. |

---

The notes to the financial statements are an integral part of, and should be read in conjunction with, the financial statements.

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Notes to Financial Statements (Unaudited)

#### Note 1-Organization and Business
MainStay MacKay DefinedTerm Municipal Opportunities Fund (the "Fund") was organized as a Delaware statutory trust on April 20, 2011, pursuant to an agreement and declaration of trust, which was most recently amended and restated on June 10, 2022 ("Declaration of Trust''). The Fund is registered under the Investment Company Act of 1940, as amended (the "1940 Act"), as a "diversified", closed-end management investment company, as those terms are defined in the 1940 Act, as interpreted or modified by regulatory authorities having jurisdiction, from time to time. The Fund first offered Common shares through an initial public offering on June 26, 2012.

Pursuant to the terms of the Declaration of Trust, the Fund will commence the process of liquidation and dissolution at the close of business on December 31, 2024 (the "Termination Date") unless otherwise extended by a majority of the Board of Trustees (the "Board") (as discussed in further detail below). During the six-month period preceding the Termination Date or Extended Termination Date (as defined below), the Board may, without shareholder approval unless such approval is required by the 1940 Act, determine to (i) merge or consolidate the Fund so long as the surviving or resulting entity is an open-end registered investment company that is managed by the same investment adviser which serves as the investment adviser to the Fund at that time or is an affiliate of such investment adviser; or (ii) convert the Fund from a closed-end fund into an open-end registered investment company. Upon liquidation and termination of the Fund, shareholders will receive an amount equal to the Fund's net asset value ("NAV") at that time, which may be greater or less than the price at which Common shares were issued. The Fund's investment objectives and policies are not designed to return to investors who purchased Common shares in the initial offering of such shares their initial investment on the Termination Date and such initial investors may receive more or less than their original investment upon termination.

Prior to the commencement of the six-month period preceding the Termination Date, a majority of the Board may extend the Termination Date for a period of not more than two years or such shorter time as may be determined (the "Extended Termination Date"), upon a determination that taking such actions as described in (i) or (ii) above would not, given prevailing market conditions, be in the best interests of the Fund's shareholders. The Termination Date may be extended one or more times by the Board prior to the first business day of the sixth month before the next occurring Extended Termination Date.

Pursuant to the June 10, 2022 amendment, if the Fund completes an Eligible Tender Offer (as defined below), a majority of the Board may, without shareholder approval unless such approval is required by the 1940 Act, eliminate the Termination Date and cause the Fund to have a perpetual existence as a closed-end fund. An "Eligible Tender Offer" is defined as a tender offer by the Fund to purchase 100% of the then outstanding Common shares of the Fund at a price equal to the NAV per Common share calculated in accordance with the Fund's valuation procedures as of the date specified in the tender offer, with the expiration

date of the tender offer being as of a date within twelve months preceding the Termination Date.

If the payment for properly tendered Common shares would result in the Fund's net assets totaling less than $200 million (the "Termination Threshold"), the Eligible Tender Offer shall be canceled, no Common shares will be repurchased pursuant to the Eligible Tender Offer, and the Fund would dissolve as set forth above. If an Eligible Tender Offer is conducted and the payment for properly tendered Common shares would result in the Fund's net assets totaling greater than or equal to the Termination Threshold, all Common shares properly tendered and not withdrawn will be purchased by the Fund pursuant to the terms of the Eligible Tender Offer. The Fund may conduct an Eligible Tender Offer upon the affirmative vote of a majority of the Board - or by an instrument signed by a majority of the Board - without a vote of the shareholders.

The Fund's primary investment objective is to seek current income exempt from regular U.S. Federal income taxes (but which may be includable in taxable income for the purpose of the Federal alternative minimum tax). Total return is a secondary objective.

#### Note 2–Significant Accounting Policies
The Fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board ("FASB") Accounting Standards Codification *Topic 946 Financial Services—Investment Companies.* The Fund prepares its financial statements in accordance with generally accepted accounting principles ("GAAP") in the United States of America and follows the significant accounting policies described below.

(A) Securities Valuation. Investments are usually valued as of the close of regular trading on the New York Stock Exchange (the "Exchange") (usually 4:00 p.m. Eastern time) on each day the Fund is open for business ("valuation date").

Effective September 8, 2022, and pursuant to Rule 2a-5 under the 1940 Act, the Board designated New York Life Investment Management LLC ("New York Life Investments" or the "Manager") as its Valuation Designee (the "Valuation Designee"). The Valuation Designee is responsible for performing fair valuations relating to all investments in the Fund's portfolio for which market quotations are not readily available; periodically assessing and managing material valuation risks; establishing and applying fair value methodologies; testing fair valuation methodologies; evaluating and overseeing pricing services; segregation of valuation and portfolio management functions; providing quarterly, annual and prompt reporting to the Board, as appropriate; identifying potential conflicts of interest; and maintaining appropriate records. The Valuation Designee has established a valuation committee ("Valuation Committee") to assist in carrying out the Valuation Designee's responsibilities and establish prices of securities for which market quotations are not readily available. The Fund's and the Valuation Designee's policies and procedures ("Valuation Procedures") govern the Valuation Designee's selection and application of methodologies for determining and calculating the fair value of Fund

22 MainStay MacKay DefinedTerm Municipal Opportunities Fund

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investments. The Valuation Designee may value Fund portfolio securities for which market quotations are not readily available and other Fund assets utilizing inputs from pricing services and other third-party sources (together, "Pricing Sources"). The Valuation Committee meets (in person, via electronic mail or via teleconference) on an ad-hoc basis to determine fair valuations and on a quarterly basis to review fair value events (excluding fair valuations from pricing services), including valuation risks and back-testing results, and preview reports to the Board.

The Valuation Committee establishes prices of securities for which market quotations are not readily available based on such methodologies and measurements on a regular basis after considering information that is reasonably available and deemed relevant by the Valuation Committee. The Board shall oversee the Valuation Designee and review fair valuation materials on a prompt, quarterly and annual basis and approve proposed revisions to the Valuation Procedures.

Investments for which market quotations are not readily available are valued at fair value as determined in good faith pursuant to the Valuation Procedures. A market quotation is readily available only when that quotation is a quoted price (unadjusted) in active markets for identical investments that the Fund can access at the measurement date, provided that a quotation will not be readily available if it is not reliable. Fair value measurements are determined within a framework that establishes a three-tier hierarchy that maximizes the use of observable market data and minimizes the use of unobservable inputs to establish a classification of fair value measurements for disclosure purposes. "Inputs" refer broadly to the assumptions that market participants would use in pricing the asset or liability, including assumptions about risk, such as the risk inherent in a particular valuation technique used to measure fair value using a pricing model and/or the risk inherent in the inputs for the valuation technique. Inputs may be observable or unobservable. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Fund. Unobservable inputs reflect the Fund's own assumptions about the assumptions market participants would use in pricing the asset or liability based on the information available. The inputs or methodology used for valuing assets or liabilities may not be an indication of the risks associated with investing in those assets or liabilities. The three-tier hierarchy of inputs is summarized below.

• Level
1—quoted prices (unadjusted) in active markets for an identical asset or liability

• Level
2—other significant observable inputs (including quoted prices for a similar asset or liability in active markets, interest rates and yield curves, prepayment speeds, credit risk, etc.)

• Level
3—significant unobservable inputs (including the Fund's own assumptions about the assumptions that market participants would use in measuring fair value of an asset or liability)

The level of an asset or liability within the fair value hierarchy is based on the lowest level of an input, both individually and in the aggregate, that is significant to the fair value measurement. The aggregate value by input

level of the Fund's assets and liabilities as of November 30, 2022, is included at the end of the Portfolio of Investments.

The Fund may use third-party vendor evaluations, whose prices may be derived from one or more of the following standard inputs, among others:

---

| | |
|:---|:---|
| • Benchmark yields | &nbsp;&nbsp;• Reported trades |
| • Broker/dealer quotes | &nbsp;&nbsp;• Issuer spreads |
| • Two-sided markets | &nbsp;&nbsp;• Benchmark securities |
| • Bids/offers | &nbsp;&nbsp;• Reference data (corporate actions or material event notices) |
| • Industry and economic events | &nbsp;&nbsp;• Comparable bonds |
| • Monthly payment information |  |

---

An asset or liability for which a market quotation is not readily available is valued by methods deemed reasonable in good faith by the Valuation Committee, following the Valuation Procedures to represent fair value. Under these procedures, the Valuation Designee generally uses a market-based approach which may use related or comparable assets or liabilities, recent transactions, market multiples, book values and other relevant information. The Valuation Designee may also use an income-based valuation approach in which the anticipated future cash flows of the asset or liability are discounted to calculate fair value. Discounts may also be applied due to the nature and/or duration of any restrictions on the disposition of the asset or liability. Fair value represents a good faith approximation of the value of a security. Fair value determinations involve the consideration of a number of subjective factors, an analysis of applicable facts and circumstances and the exercise of judgment. As a result, it is possible that the fair value for a security determined in good faith in accordance with the Valuation Procedures may differ from valuations for the same security determined for other funds using their own valuation procedures. Although the Valuation Procedures are designed to value a security at the price the Fund may reasonably expect to receive upon the security's sale in an orderly transaction, there can be no assurance that any fair value determination thereunder would, in fact, approximate the amount that the Fund would actually realize upon the sale of the security or the price at which the security would trade if a reliable market price were readily available. During the six-month period ended November 30, 2022, there were no material changes to the fair value methodologies.

Securities which may be valued in this manner include, but are not limited to: (i) a security for which trading has been halted or suspended or otherwise does not have a readily available market quotation on a given day; (ii) a debt security that has recently gone into default and for which there is not a current market quotation; (iii) a security of an issuer that has entered into a restructuring; (iv) a security that has been delisted from a national exchange; (v) a security subject to trading collars for which no or limited trading takes place; and (vi) a security whose principal market has been temporarily closed at a time when, under normal conditions, it would be open. Securities valued in this manner are generally categorized as Level 2 or 3 in the hierarchy.

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Notes to Financial Statements (Unaudited) (continued)

Municipal debt securities are valued at the evaluated mean prices supplied by a pricing agent or broker selected by the Valuation Designee, in consultation with the Subadvisor. The evaluations are market-based measurements processed through a pricing application and represents the pricing agent's good faith determination as to what a holder may receive in an orderly transaction under market conditions. The rules-based logic utilizes valuation techniques that reflect participants' assumptions and vary by asset class and per methodology, maximizing the use of relevant observable data including quoted prices for similar assets, benchmark yield curves and market corroborated inputs. The evaluated bid or mean prices are deemed by the Valuation Designee, in consultation with the Subadvisor, to be representative of market values, at the regular close of trading of the Exchange on each valuation date. Municipal debt securities purchased on a delayed delivery basis are marked to market daily until settlement at the forward settlement date. Municipal debt securities are generally categorized as Level 2 in the hierarchy.

The information above is not intended to reflect an exhaustive list of the methodologies that may be used to value portfolio investments. The Valuation Procedures permit the use of a variety of valuation methodologies in connection with valuing portfolio investments. The methodology used for a specific type of investment may vary based on the market data available or other considerations. The methodologies summarized above may not represent the specific means by which portfolio investments are valued on any particular business day.

(B) Income Taxes. The Fund's policy is to comply with the requirements of the Internal Revenue Code of 1986, as amended (the "Internal Revenue Code"), applicable to regulated investment companies and to distribute all of its taxable income to the shareholders of the Fund within the allowable time limits.

The Manager evaluates the Fund's tax positions to determine if the tax positions taken meet the minimum recognition threshold in connection with accounting for uncertainties in income tax positions taken or expected to be taken for the purposes of measuring and recognizing tax liabilities in the financial statements. Recognition of tax benefits of an uncertain tax position is permitted only to the extent the position is "more likely than not" to be sustained assuming examination by taxing authorities. The Manager analyzed the Fund's tax positions taken on federal, state and local income tax returns for all open tax years (for up to three tax years) and has concluded that no provisions for federal, state and local income tax are required in the Fund's financial statements. The Fund's federal, state and local income tax and federal excise tax returns for tax years for which the applicable statutes of limitations have not expired are subject to examination by the Internal Revenue Service and state and local departments of revenue.

(C) Dividends and Distributions to Common Shareholders. Dividends and distributions are recorded on the ex-dividend date. The Fund intends to declare dividends from net investment income at least monthly and declares and pays distributions from net realized capital gains, if any, at least annually. Dividends and distributions are

determined in accordance with federal income tax regulations and may differ from determinations using GAAP. For information on the Fund's dividend reinvestment plan, please see page 29.

(D) Security Transactions and Investment Income. The Fund records security transactions on the trade date. Realized gains and losses on security transactions are determined using the identified cost method. Interest income is accrued as earned using the effective interest rate method. Discounts and premiums on securities purchased by the Fund, other than temporary cash investments that mature in 60 days or less at the time of purchase, are accreted and amortized, respectively, using the effective interest rate method.

The Fund may place a debt security on non-accrual status and reduce related interest income by ceasing current accruals and writing off all or a portion of any interest receivables when the collection of all or a portion of such interest has become doubtful. A debt security is removed from non-accrual status when the issuer resumes interest payments or when collectability of interest is reasonably assured.

(E) Expenses. Expenses of the Fund are recorded on the date the expenses are incurred. The expenses borne by the Fund, including those of related parties to the Fund, are shown in the Statement of Operations. Certain expenses of the Fund are allocated in proportion to other funds within the MainStay Group of Funds.

(F) Use of Estimates. In preparing financial statements in conformity with GAAP, the Manager makes estimates and assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from those estimates and assumptions.

(G) Tender Option Bonds. The Fund may leverage its assets through the use of proceeds received from tender option bond ("TOB") transactions. In a TOB transaction, a tender option bond trust (a "TOB Issuer") is typically established, which forms a special purpose trust into which the Fund, or an agent on behalf of the Fund, transfers municipal bonds or other municipal securities ("Underlying Securities"). A TOB Issuer typically issues two classes of beneficial interests: short-term floating rate notes ("TOB Floaters") with a fixed principal amount representing a senior interest in the Underlying Securities, and which are sold to third party investors, and residual interest municipal tender option bonds ("TOB Residuals") representing a subordinate interest in the Underlying Securities, and which are generally issued to the Fund. The interest rate on the TOB Floaters resets periodically, usually weekly, to a prevailing market rate, and holders of the TOB Floaters are granted the option to tender their TOB Floaters back to the TOB Issuer for repurchase at their principal amount plus accrued interest thereon periodically, usually daily or weekly. The Fund may invest in both TOB Floaters and TOB Residuals. The Fund may not invest more than 5% of its Managed Assets (as defined in Note 3(A)) in any single TOB Issuer. The Fund may invest in both TOB Floaters and TOB Residuals issued by the same TOB Issuer.

Typically, a fund serves as the sponsor of the TOB issuer ("Fund-sponsored TOB"). Under this structure, a fund establishes,

24 MainStay MacKay DefinedTerm Municipal Opportunities Fund

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structures and "sponsors" the TOB Issuer in which it holds TOB Residuals. The Fund uses this or a similar structure for any TOB in which it invests. In connection with Fund-sponsored TOBs, the fund sponsoring the Fund-sponsored TOB ("Fund Sponsor") may contract with a third-party to perform some or all of the Fund Sponsor's duties as sponsor. Regardless of whether the Fund Sponsor delegates any of its sponsorship duties to a third party, the Fund Sponsor's expanded role under the Fund-sponsored TOB structure may increase the Fund Sponsor's operational and regulatory risk. If the third-party is unable to perform its obligations as an administrative agent, the Fund Sponsor itself would be subject to such obligations or would need to secure a replacement agent. The obligations that the Fund Sponsor may be required to undertake could include reporting and recordkeeping obligations under the Internal Revenue Code and federal securities laws and contractual obligations with other TOB service providers. The Fund may serve as a Fund Sponsor to a Fund-sponsored TOB. If the Fund serves as a Fund Sponsor, it would be subject to the obligations discussed above and the risks attendant to such obligations.

Under the Fund-sponsored TOB structure, the TOB Issuer receives Underlying Securities from the Fund through (or as) the Fund Sponsor and then issues TOB Floaters to third party investors and TOB Residuals to the Fund. The Fund is paid the cash (less transaction expenses, which are borne by the Fund) received by the TOB Issuer from the sale of TOB Floaters and typically will invest the cash in additional municipal bonds or other investments permitted by its investment policies. TOB Floaters may have first priority on the cash flow from the securities held by the TOB Issuer and are enhanced with a liquidity support arrangement from a bank or an affiliate of the sponsor (the "liquidity provider"), which allows holders to tender their position back to the TOB Issuer at par (plus accrued interest). The Fund, in addition to receiving cash from the sale of TOB Floaters, also receives TOB Residuals. TOB Residuals provide the Fund with the right to (1) cause the holders of TOB Floaters to tender their notes to the TOB Issuer at par (plus accrued interest), and (2) acquire the Underlying Securities from the TOB Issuer. In addition, all voting rights and decisions to be made with respect to any other rights relating to the Underlying Securities deposited in the TOB Issuer are passed through to the Fund, as the holder of TOB Residuals. Such a transaction, in effect, creates exposure for the Fund to the entire return of the Underlying Securities deposited in the TOB Issuer, with a net cash investment by the Fund that is less than the value of the Underlying Securities deposited in the TOB Issuer. This multiplies the positive or negative impact of the Underlying Securities' return within the Fund (thereby creating leverage). Income received from TOB Residuals will vary inversely with the short-term rate paid to holders of TOB Floaters and in most circumstances, TOB Residuals represent substantially all of the Underlying Securities' downside investment risk and also benefits disproportionately from any potential appreciation of the Underlying Securities' value. The amount of such increase or decrease is a function, in part, of the amount of TOB Floaters sold by the TOB Issuer of these securities relative to the amount of TOB Residuals that it sells. The greater the amount of TOB Floaters sold relative to TOB Residuals, the more volatile the income paid on TOB Residuals will be. The price of TOB Residuals will be more volatile

than that of the Underlying Securities because the interest rate is dependent on not only the fixed coupon rate of the Underlying Securities, but also on the short-term interest rate paid on TOB Floaters.

For TOB Floaters, generally, the interest rate earned will be based upon the market rates for municipal securities with maturities or remarketing provisions that are comparable in duration to the periodic interval of the tender option, which may vary from weekly, to monthly, to extended periods of one year or multiple years. Since the option feature has a shorter term than the final maturity or first call date of the Underlying Securities deposited in the TOB Issuer, the Fund, if it is the holder of the TOB Floaters, relies upon the terms of the agreement with the financial institution furnishing the option as well as the credit strength of that institution. As further assurance of liquidity, the terms of the TOB Issuer provide for a liquidation of the Underlying Security deposited in the TOB Issuer and the application of the proceeds to pay off the TOB Floaters.

The TOB Issuer may be terminated without the consent of the Fund upon the occurrence of certain events, such as the bankruptcy or default of the issuer of the Underlying Securities deposited in the TOB Issuer, a substantial downgrade in the credit quality of the issuer of the securities deposited in the TOB Issuer, the inability of the TOB Issuer to obtain liquidity support for the TOB Floaters, a substantial decline in the market value of the Underlying Securities deposited in the TOB Issuer, or the inability of the sponsor to remarket any TOB Floaters tendered to it by holders of the TOB Floaters. In such an event, the TOB Floaters would be redeemed by the TOB Issuer at par (plus accrued interest) out of the proceeds from a sale of the Underlying Securities deposited in the TOB Issuer. If this happens, the Fund would be entitled to the assets of the TOB Issuer, if any, that remain after the TOB Floaters have been redeemed at par (plus accrued interest). If there are insufficient proceeds from the sale of these Underlying Securities to redeem all of the TOB Floaters at par (plus accrued interest), the liquidity provider or holders of the TOB Floaters would bear the losses on those securities and there would be no recourse to the Fund's assets (unless the Fund held a recourse TOB Residual).

To the extent that the remarketing agent and/or the liquidity provider is a banking entity, the TOB may face heightened liquidity risks due to restrictions applicable to banking entities under the Volcker Rule. The Volcker Rule generally prohibits banking entities from engaging in proprietary trading or from acquiring or retaining an ownership interest in, or sponsoring, a hedge fund or private equity fund (a "Covered Fund"). TOB Issuers are often structured as a Covered Fund, and therefore, a banking entity that is a remarketing agent would not be able to repurchase tendered TOB Floaters for its own account upon a failed remarketing. In the event of a failed remarketing, a banking entity serving as liquidity provider may loan the necessary funds to the TOB Issuer to purchase the tendered TOB Floaters. The TOB Issuer, not the Fund Sponsor or the Fund, would be the borrower and the loan from the liquidity provider will be secured by the purchased TOB Floaters now held by the TOB Issuer. However, the Fund Sponsor and the Fund would bear the risk of loss with respect to any liquidity shortfall to the extent it entered into a reimbursement agreement with the liquidity provider. If a

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Notes to Financial Statements (Unaudited) (continued)

TOB Issuer in which the Fund invests experiences adverse events in connection with a failed remarketing of TOB Floaters or a liquidity shortfall, the Fund would experience a loss.

For financial reporting purposes, Underlying Securities that are deposited into a TOB Issuer are treated as investments of the Fund, and are presented in the Fund's Portfolio of Investments. Outstanding TOB Floaters issued by a TOB Issuer are presented as a liability at their face value as "Payable for Floating Rate Note Obligations" in the Fund's Statement of Assets and Liabilities. The face value of the TOB Floaters approximates their fair value of the floating rate notes. Interest income from the Underlying Securities are recorded by the Fund on an accrual basis. Interest expense incurred on the TOB Floaters and other expenses related to remarketing, administration and trustee services to a TOB Issuer are recognized as a component of "Interest expense and fees" in the Statement of Operations.

At November 30, 2022, the aggregate value of the Underlying Securities transferred to the TOB Issuer and the related liability for TOB Floaters were as follows:

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| | |
|:---|:---|
| &nbsp;&nbsp;**Underlying <br> Securities Transferred<br> to TOB Issuers** | &nbsp;&nbsp;**Liability for<br> Floating Rate Note<br> Obligations** |
| &nbsp;&nbsp;$438418389 | &nbsp;&nbsp;$304950000 |

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During the six-month period ended November 30, 2022, the Fund's average TOB Floaters outstanding and the daily weighted average interest rate, including fees, were as follows:

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| | |
|:---|:---|
| &nbsp;&nbsp;**Average <br> Floating Rate Note<br> Obligations Outstanding** | &nbsp;&nbsp;**Daily Weighted<br> Average<br> Interest Rate** |
| &nbsp;&nbsp;$308998415 | &nbsp;&nbsp;1.10% |

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(H) Statement of Cash Flows. The cash amount shown in the Fund's Statement of Cash Flows is the amount included in the Fund's Statement of Assets and Liabilities and represents the cash on hand at its custodian and restricted cash, if any, as of November 30, 2022.

(I) Municipal Bond Risk. The Fund may invest more heavily in municipal bonds from certain cities, states, territories or regions than others, which may increase the Fund's exposure to losses resulting from economic, political, regulatory occurrences, or declines in tax revenue impacting these particular cities, states, territories or regions. In addition, many state and municipal governments that issue securities are under significant economic and financial stress and may not be able to satisfy their obligations, and these events may be made worse due to economic challenges posed by COVID-19. The Fund may invest a substantial amount of its assets in municipal bonds whose interest is paid solely from revenues of similar projects, such as tobacco settlement bonds. If the Fund concentrates its investments in this manner, it assumes the legal and economic risks relating to such projects and this may have a significant impact on the Fund's investment performance.

Certain of the issuers in which the Fund may invest have recently experienced, or may experience, significant financial difficulties and

repeated credit rating downgrades. On May 3, 2017, the Commonwealth of Puerto Rico (the "Commonwealth") began proceedings pursuant to the Puerto Rico Oversight, Management, and Economic Stability Act ("PROMESA") to seek bankruptcy-type protections from approximately $74 billion in debt and approximately $48 billion in unfunded pension obligations. In addition, the economic downturn following the outbreak of COVID-19 and the resulting pressure on Puerto Rico's budget have further contributed to its financial challenges. The federal government has passed certain relief packages, including the Coronavirus Aid, Relief, and Economic Security Act and the American Rescue Plan, which include an aggregate of more than $7 billion in disaster relief funds for the U.S. territories, including Puerto Rico. However, there can be no assurances that the federal funds allocated to the Commonwealth will be sufficient to address the economic challenges arising from COVID-19.

The Commonwealth concluded its Title III restructuring proceedings on behalf of itself and certain instrumentalities effective March 15th, 2022. Approximately $18.75 billion of claims related to debt guaranteed under Puerto Rico's constitution including the Commonwealth of Puerto Rico and Public Building Authority were restructured with issuance of $7.4 billion in new Puerto Rico General Obligation Bonds, $7.1 billion of cash, and $3.5 billion of new Contingent Value instruments. In addition the Commonwealth's exit from the restructuring proceedings resolved certain claims relating to the Commonwealth Employee Retirement System, Convention Center, Highway Authority, and Infrastructure Financing Authority. Several of Commonwealth's agencies are still under Title III restructuring proceedings including the Highway Authority and Electric Authority.

Puerto Rico's debt restructuring process and other economic, political, social, environmental or health factors or developments could occur rapidly and may significantly affect the value of municipal securities of Puerto Rico. Due to the ongoing budget impact from COVID-19 on the Commonwealth's finances, the Federal Oversight and Management Board for Puerto Rico or the Commonwealth itself could seek to revise or even terminate earlier agreements reached with certain creditors prior to the outbreak of COVID-19. Any agreement between the Federal Oversight and Management Board and creditors is subject to approval by the judge overseeing the Title III proceedings. The composition of the Federal Oversight and Management Board has changed during the recent period due to existing members either stepping down or being replaced following the expiration of a member's term. There is no assurance that board members will approve the restructuring agreements the prior board had negotiated.

The Fund's vulnerability to potential losses associated with such developments may be reduced through investing in municipal securities that feature credit enhancements (such as bond insurance). The bond insurance provider pays both principal and interest when due to the bond holder. The magnitude of Puerto Rico's debt restructuring or other adverse economic developments could pose significant strains on the ability of municipal securities insurers to meet all future claims. As of November 30, 2022, 73.3% of the Puerto Rico municipal securities held by the Fund were insured. The Fund's largest bond insurance provider,

26 MainStay MacKay DefinedTerm Municipal Opportunities Fund

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Assured Guaranty Municipal Corp., insured certain Puerto Rico municipal securities totaling 1.94% of the Fund's total investments. Those securities, whose principal and interest are covered by bond insurance providers, are shown in the Portfolio of Investments.

(J) Indemnifications. Under the Fund's organizational documents, its officers and trustees are indemnified against certain liabilities that may arise out of performance of their duties to the Fund. Additionally, in the normal course of business, the Fund enters into contracts with third-party service providers that contain a variety of representations and warranties and that may provide general indemnifications. The Fund's maximum exposure under these arrangements is unknown, as this would involve future claims that may be made against the Fund that have not yet occurred. The Manager believes that the risk of loss in connection with these potential indemnification obligations is remote. However, there can be no assurance that material liabilities related to such obligations will not arise in the future, which could adversely impact the Fund.

#### Note 3–Fees and Related Party Transactions
(A) Manager and Subadvisor. New York Life Investments, a registered investment adviser and an indirect, wholly-owned subsidiary of New York Life Insurance Company ("New York Life"), serves as the Fund's Manager, pursuant to an Amended and Restated Management Agreement ("Management Agreement"). The Manager provides offices, conducts clerical, recordkeeping and bookkeeping services and keeps most of the financial and accounting records required to be maintained by the Fund. Except for the portion of salaries and expenses that are the responsibility of the Fund, the Manager pays the salaries and expenses of all personnel affiliated with the Fund and certain operational expenses of the Fund. During a portion of the six-month period ended November 30, 2022, the Fund reimbursed New York Life Investments in an amount equal to the portion of the compensation of the Chief Compliance Officer attributable to the Fund. MacKay Shields LLC ("MacKay Shields" or the "Subadvisor"), a registered investment adviser and an indirect, wholly-owned subsidiary of New York Life, serves as the Subadvisor to the Fund and is responsible for the day-to-day portfolio management of the Fund. Pursuant to the terms of a Subadvisory Agreement ("Subadvisory Agreement") between New York Life Investments and MacKay Shields, New York Life Investments pays for the services of the Subadvisor.

Under the Management Agreement, the Fund pays the Manager a monthly fee for the services performed and the facilities furnished at an annual rate of 0.60% of the "Managed Assets". Managed Assets is defined as the Fund's total assets, minus the sum of its accrued liabilities (other than Fund liabilities incurred for the purpose of creating effective leverage (i.e. tender option bonds) or Fund liabilities related to liquidation preference of any Preferred shares issued).

During the six-month period ended November 30, 2022, New York Life Investments earned fees from the Fund in the amount of $2,393,561 and paid the Subadvisor in the amount of $1,196,780.

JPMorgan Chase Bank, N.A. ("JPMorgan") provides sub-administration and sub-accounting services to the Fund pursuant to an agreement with New York Life Investments. These services include calculating the daily NAVs of the Fund, maintaining the general ledger and sub-ledger accounts for the calculation of the Fund's NAVs, and assisting New York Life Investments in conducting various aspects of the Fund's administrative operations. For providing these services to the Fund, JPMorgan is compensated by New York Life Investments.

Pursuant to an agreement between the Fund and New York Life Investments, New York Life Investments is responsible for providing or procuring certain regulatory reporting services for the Fund. The Fund will reimburse New York Life Investments for the actual costs incurred by New York Life Investments in connection with providing or procuring these services for the Fund.

(B) Transfer, Dividend Disbursing and Shareholder Servicing Agent. Computershare Trust Company, N.A. ("Computershare"), 150 Royall Street, Canton, Massachusetts, 02021, is the Fund's transfer, dividend disbursing and shareholder servicing agent pursuant to an agreement between the Fund and Computershare.

#### Note 4-Federal Income Tax
As of November 30, 2022, the cost and unrealized appreciation (depreciation) of the Fund's investment portfolio, including applicable derivative contracts and other financial instruments, as determined on a federal income tax basis, were as follows:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **Federal Tax<br> Cost** | **Gross <br> Unrealized<br> Appreciation** | **Gross <br> Unrealized<br> (Depreciation)** | **Net <br> Unrealized<br> Appreciation/<br> (Depreciation)** |
| Investments in Securities | $445128087 | $332832949 | $(13939107) | $318893842 |

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As of May 31, 2022, for federal income tax purposes, capital loss carryforwards of $30,157,789, as shown in the table below, were available to the extent provided by the regulations to offset future realized gains of the Fund. Accordingly, no capital gains distributions are expected to be paid to shareholders until net gains have been realized in excess of such amounts.

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| | | |
|:---|:---|:---|
| &nbsp;&nbsp;**Capital Loss<br> Available Through** | &nbsp;&nbsp;**Short-Term <br> Capital Loss<br> Amounts (000's)** | &nbsp;&nbsp;**Long-Term <br> Capital Loss<br> Amounts (000's)** |
| &nbsp;&nbsp;Unlimited | &nbsp;&nbsp;$24885 | &nbsp;&nbsp;$5273 |

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Notes to Financial Statements (Unaudited) (continued)

During the year ended May 31, 2022 the tax character of distributions paid to Common shareholders (as reflected in the Statements of Changes in Net Assets) was as follows:

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| | | | |
|:---|:---|:---|:---|
|  | &nbsp;&nbsp;**2022** | &nbsp;&nbsp;**2022** | &nbsp;&nbsp;**2022** |
| &nbsp;&nbsp;**Distributions paid from:** | &nbsp;&nbsp;**Ordinary <br> Income** | &nbsp;&nbsp;**Exempt <br> Interest<br> Dividends** | &nbsp;&nbsp;**Long-Term <br> Capital Gain** |
| Common shares | &nbsp;&nbsp;$1090377 | &nbsp;&nbsp;$27282600 | &nbsp;&nbsp;$— |

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#### Note 5–Custodian
JPMorgan is the custodian of cash and securities held by the Fund. Custodial fees are charged to the Fund based on the Fund's net assets and/or the market value of securities held by the Fund and the number of certain transactions incurred by the Fund.

#### Note 6–Purchases and Sales of Securities (in 000's)
During the six-month period ended November 30, 2022, purchases and sales of securities, other than short-term securities, were $239,170 and $263,552, respectively.

#### Note 7–Capital Share Transactions
Transactions in capital shares for the six-month period ended November 30, 2022 and the year ended May 31, 2022, were as follows:

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| | | |
|:---|:---|:---|
| &nbsp;&nbsp;**Common Shares** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Amount** |
| Six-month period ended November 30, 2022: |  |  |
| Common shares issued to shareholders in reinvestment of distributions <sup>(a)</sup> | &nbsp;&nbsp;&nbsp;21889 | &nbsp;&nbsp;$388959 |
| Year ended May 31, 2022: |  |  |
| Common shares issued to shareholders in reinvestment of distributions <sup>(a)</sup> | &nbsp;&nbsp;&nbsp;76072 | &nbsp;&nbsp;$1559157 |

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(a) See
 page 29 for information on the Fund's dividend reinvestment plan.

#### Note 8–Other Matters
As of the date of this report, interest rates in the United States and many parts of the world, including certain European countries, are ascending from historically low levels. Thus, the Fund currently faces a heightened level of risk associated with rising interest rates. This could be driven by a variety of factors, including but not limited to central bank monetary policies, changing inflation or real growth rates, general economic conditions, increasing bond issuances or reduced market demand for low yielding investments.

An outbreak of COVID-19, first detected in December 2019, has developed into a global pandemic and has resulted in travel restrictions, closure of international borders, certain businesses and securities markets, restrictions on securities trading activities, prolonged quarantines, supply chain disruptions, and lower consumer demand, as well as general concern and uncertainty. In 2022, many countries lifted

some or all restrictions related to COVID-19. However, the continued impact of COVID-19 and related variants is uncertain and could further adversely affect the global economy, national economies, individual issuers and capital markets in unforeseeable ways and result in a substantial and extended economic downturn. Developments that disrupt global economies and financial markets, such as COVID-19, may magnify factors that affect the Fund's performance.

#### Note 9–Subsequent Events
In connection with the preparation of the financial statements of the Fund as of and for the six-month period ended November 30, 2022, events and transactions subsequent to November 30, 2022, through the date the financial statements were issued have been evaluated by the Manager for possible adjustment and/or disclosure. No subsequent events requiring financial statement adjustment or disclosure have been identified, other than the following:

On October 3, 2022, the Fund declared a dividend in the amount of $0.085 per Common share, payable on December 30, 2022, to shareholders of record on December 15, 2022.

On January 3, 2023, the Fund declared dividends to Common shareholders for the upcoming quarter as shown in the following schedule:

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| | | | | |
|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;**Month** | &nbsp;&nbsp;**Ex-Date** | &nbsp;&nbsp;**Record Date** | &nbsp;&nbsp;**Payable Date** | &nbsp;&nbsp;**Amount** |
| January | &nbsp;&nbsp;1/13/23 | &nbsp;&nbsp;1/17/23 | &nbsp;&nbsp;1/31/23 | &nbsp;&nbsp;$0.08 |
| February | &nbsp;&nbsp;2/14/23 | &nbsp;&nbsp;2/15/23 | &nbsp;&nbsp;2/28/23 | &nbsp;&nbsp;$0.08 |
| March | &nbsp;&nbsp;3/14/23 | &nbsp;&nbsp;3/15/23 | &nbsp;&nbsp;3/31/23 | &nbsp;&nbsp;$0.08 |

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28 MainStay MacKay DefinedTerm Municipal Opportunities Fund

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Dividend Reinvestment Plan (Unaudited)

Pursuant to the Fund's Dividend Reinvestment Plan (the "Plan") shareholders whose shares are registered in their own name may "opt-in" to the Plan and elect to reinvest all or a portion of their distributions in the Common shares by providing the required enrollment notice to Computershare Trust Company, N.A., the Plan Administrator ("Plan Administrator"). Shareholders whose shares are held in the name of a broker or other nominee may have distributions reinvested only if such a service is provided by the broker or the nominee or if the broker or the nominee permits participation in the Plan. Shareholders whose shares are held in the name of a broker or other nominee should contact the broker or nominee for details. A shareholder may terminate participation in the Plan at any time by notifying the Plan Administrator before the record date of the next distribution through the Internet, by telephone or in writing. All distributions to shareholders who do not participate in the Plan, or have elected to terminate their participation in the Plan, will be paid by check mailed directly to the record holder by or under the direction of the Plan Administrator when the Fund declares a distribution.

When the Fund declares a dividend or other distribution (together, a "Dividend") payable in cash, non-participants in the Plan will receive cash and participants in the Plan (i.e., those holders of Common shares who ("opt-in") will receive the equivalent in Common shares. The Common shares will be acquired by the Plan Administrator for the participants' accounts, depending upon the circumstances described below, either (i) through receipt of additional unissued but authorized Common shares from the Fund ("Newly Issued Common Shares") or (ii) by purchase of outstanding Common shares on the open market ("Open-Market Purchases") on the NYSE or elsewhere. If, on the payment date for any Dividend, the closing market price per Common share plus estimated per share fees, which include any brokerage commissions the Plan Administrator is required to pay, is equal to or greater than the NAV per Common share, the Plan Administrator will invest the Dividend amount in Newly Issued Common shares on behalf of the participants. The number of Newly Issued Common Shares to be credited to each participant's account will be determined by dividing the dollar amount of the Dividend by the NAV per Common share on the payment date; provided that, if the NAV is less or equal to 95% of the closing market value on the payment date, the dollar amount of the Dividend will be divided by 95% of the closing market price per Common share on the payment date. If, on the payment date for any Dividend, the NAV per Common share is greater than the closing market value plus estimated per share fees, the Plan Administrator will invest the Dividend amount in Common shares acquired on behalf of the participants in Open-Market Purchases. In the event of a market discount on the payment date for any Dividend, the Plan Administrator will have until the last business day before the next date on which the Common shares trade on an "ex-dividend" basis or 30 days after the payment date for such Dividend, whichever is sooner (the "Last Purchase Date"), to invest the Dividend amount in Common shares acquired in Open-Market Purchases. It is contemplated that the Fund will pay monthly income Dividends. Therefore, the period during which Open-Market Purchases can be made will exist only from the payment date of each Dividend through the date before the next "ex-dividend" date which typically will be approximately ten days. If, before the Plan Administrator has completed its Open-Market Purchases, the market price per Common share exceeds the NAV per Common shares, the average per Common share purchase price paid by the Plan Administrator may exceed the NAV of the Common shares, resulting in the acquisition of fewer Common shares than if the Dividend had been paid in Newly Issued Common Shares on the Dividend payment date.

Because of the foregoing difficulty with respect to Open-Market Purchases, the Plan provides that if the Plan Administrator is unable to invest the full Dividend amount in Open-Market Purchases during the purchase period or if the market discount shifts to a market premium during the purchase period, the Plan Administrator may cease making Open-Market Purchases and may invest the uninvested portion of the Dividend amount in Newly Issued Common Shares at the NAV per Common share at the close of business on the Last Purchase Date provided that, if the NAV per Common share is less than or equal to 95% of the then current market price per Common share; the dollar amount of the Dividend will be divided by 95% of the market price per Common share on the payment date.

The Plan Administrator maintains all shareholders' accounts in the Plan and furnishes written confirmation of all transactions in the accounts, including information needed by shareholders for tax records. Common shares in the account of each Plan participant will be held by the Plan Administrator on behalf of the Plan participant, and each shareholder proxy will include those shares purchased or received pursuant to the Plan. The Plan Administrator will forward all proxy solicitation materials to participants and vote proxies for shares held under the Plan in accordance with the instructions of the participants.

In the case of shareholders such as banks, brokers or nominees which hold shares for others who are the beneficial owners, the Plan Administrator will administer the Plan on the basis of the number of Common shares certified from time to time by the record shareholder's name and held for the account of beneficial owners who participate in the Plan.

There will be no charges with respect to Common shares issued directly by the Fund as a result of dividends or capital gains distributions payable either in Common shares or in cash. The Plan Administrator's fees for the handling of the reinvestment of dividends and distributions will be paid by the Fund. However, each participant will pay a per share fee incurred in connection with Open-Market Purchases. The reinvestment of Dividends will not relieve participants of any Federal, state or local income tax that may be payable (or required to be withheld) on such dividends. See "U.S. Federal Income Tax Matters." Participants that request a sale of shares through the Plan Administrator are subject to a $2.50 sales fee and a $0.15 per share sold fee. All per share fees include any brokerage commission the Plan Administrator is required to pay.

The Fund reserves the right to amend or terminate the Plan. There is no direct service charge to participants with regard to purchases in the Plan; however, the Fund reserves the right to amend the Plan to include a service charge payable by the participants.

All correspondence or questions concerning the Plan should be directed to the Plan Administrator, Computershare Trust Company, N.A., by telephone (855) 456-9683, through the internet at www.computershare.com/investor or in writing to P.O. Box 43078, Providence, RI 02940-3078.

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[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

### Proxy Results
The Annual Meeting of Shareholders was held on September 28, 2022, to elect two Class I Trustees of the Fund by shareholders of record as on July 6, 2022. Listed below are the results of this voting.

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| | | | | |
|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;**Trustees** | &nbsp;&nbsp;**Votes <br> FOR** | &nbsp;&nbsp;**Votes <br> WITHHELD** | &nbsp;&nbsp;**Abstentions** | &nbsp;&nbsp;**Total Votes** |
| &nbsp;&nbsp;Susan B. Kerley | &nbsp;&nbsp;24511545 | &nbsp;&nbsp;324248 | &nbsp;&nbsp;0 | &nbsp;&nbsp;24835793 |
| &nbsp;&nbsp;Jacques P. Perold | &nbsp;&nbsp;24374023 | &nbsp;&nbsp;461770 | &nbsp;&nbsp;0 | &nbsp;&nbsp;24835793 |

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### Proxy Voting Policies and Procedures and Proxy Voting Record
The Fund is required to file with the SEC its proxy voting records for the 12-month period ending June 30 on Form N-PX. A description of the policies and procedures that are used to vote proxies relating to portfolio securities of the Fund is available free of charge upon request by calling 800-624-6782 or visiting the SEC's website at *www.sec.gov.* The most recent Form N-PX or proxy voting record is available free of charge upon request by calling 800-624-6782; visiting newyorklifeinvestments.com; or visiting the SEC's website at *www.sec.gov.*

### Shareholder Reports and Quarterly Portfolio Disclosure
The Fund is required to file its complete schedule of portfolio holdings with the SEC 60 days after its first and third fiscal quarter on Form N-PORT. The Fund's holdings report is available free of charge upon request by calling New York Life Investments at 800-624-6782.

30 MainStay MacKay DefinedTerm Municipal Opportunities Fund

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[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

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[**Table of Contents**](#job_nylim_d655736b-dc8b-46a2-9787-404f15d77e52_toc)

#### Manager

#### New York Life Investment Management LLC
New York, New York

#### Subadvisor

#### MacKay Shields LLC<sup>1</sup>
New York, New York

#### Legal Counsel
Dechert LLP

#### Independent Registered Public Accounting Firm
PricewaterhouseCoopers LLP

#### Transfer, Dividend Disbursing and Shareholder Servicing Agent

#### Computershare Trust Company, N.A.
P.O. Box 43078<br> Providence, RI 02940-3078<br> (855) 456-9683

#### newyorklifeinvestments.com/mmd
1. An affiliate of New York Life Investment Management LLC.

"New York Life Investments" is both a service mark, and the common trade name, of certain investment advisors affiliated with New York Life Insurance Company.

5013532.2MS005-23 MSMHI10-01/23

(NYLIM) NL265

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**Item 2.** **Code of Ethics.** <br>

Not applicable.

**Item 3.** **Audit Committee Financial Expert.** <br>

Not applicable.

**Item 4.** **Principal Accountant Fees and Services.** <br>

Not applicable.

**Item 5.** **Audit Committee of Listed Registrants.** <br>

Not applicable.

**Item 6.** **Investments.** <br>

The Schedule of Investments is included as part of Item 1 of this report.

**Item 7.** **Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies.** <br>

Not applicable.

**Item 8.** **Portfolio Managers of Closed-End Management Investment Companies.** <br>

Not applicable.

**Item 9.** **Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers.** <br>

Not applicable.

**Item 10.** **Submission of Matters to a Vote of Security Holders.** <br>

Since the Registrant's last response to this item, there have been no material changes to the procedures by which shareholders may recommend nominees to the Registrant's Board of Trustees.

**Item 11.** **Controls and Procedures.** <br>

(a) Based on an evaluation of the Registrant's Disclosure Controls and Procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) (the "Disclosure Controls"), as of a date within 90 days prior to the filing date (the "Filing Date") of this Form

------

N-CSR (the "Report"), the Registrant's principal executive officer and principal financial officer have concluded that the Disclosure Controls are reasonably designed to ensure that information required to be disclosed by the Registrant in the Report is recorded, processed, summarized and reported by the Filing Date, including ensuring that information required to be disclosed in the Report is accumulated and communicated to the Registrant's management, including the Registrant's principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

(b) There were no changes in the Registrant's internal control over financial reporting (as defined in Rule 30a-3(d)) under the Investment Company Act of 1940 that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the Registrant's internal control over financial reporting.

**Item 12.** **Disclosure of Securities Lending Activities for Closed-End Management Investment Companies.** <br>

Not applicable.

**Item 13.** **Exhibits.** <br>

(a) [Certifications of principal executive officer and principal financial officer as required by Rule 30a-2 under the Investment Company Act of 1940.](d343667dex99cert.htm)

(b) [Certifications of principal executive officer and principal financial officer as required by Section 906 of the Sarbanes-Oxley Act of 2002.](d343667dex99906cert.htm)

------

**SIGNATURES** 

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the Registrant has duly caused this Report to be signed on its behalf by the undersigned, thereunto duly authorized.

**MAINSTAY MACKAY DEFINEDTERM MUNICIPAL OPPORTUNITIES FUND** 

---

| | |
|:---|:---|
| By: | <u>/s/ Kirk C. Lehneis</u> |
|  | Kirk C. Lehneis |
|  | President and Principal Executive Officer |

---

Date: February 3, 2023

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this Report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.

---

| | |
|:---|:---|
| By: | <u>/s/ Kirk C. Lehneis</u> |
|  | Kirk C. Lehneis |
|  | President and Principal Executive Officer |

---

Date: February 3, 2023

---

| | |
|:---|:---|
| By: | <u>/s/ Jack R. Benintende</u> |
|  | Jack R. Benintende |
|  | Treasurer and Principal Financial |
|  | and Accounting Officer |

---

Date: February 3, 2023

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**EXHIBIT INDEX** 

[(a) Certifications of principal executive officer and principal financial officer as required by Rule 30a-2 under the Investment Company Act of 1940.](d343667dex99cert.htm)

[(b) Certifications of principal executive officer and principal financial officer as required by Section 906 of the Sarbanes-Oxley Act of 2002.](d343667dex99906cert.htm)

## Ex-99.Cert

Exhibit (a)

**SECTION 302 CERTIFICATIONS** 

I, Kirk C. Lehneis, President and Principal Executive Officer of MainStay MacKay DefinedTerm Municipal Opportunities Fund, certify that:

1. I have reviewed this report on Form N-CSR of MainStay MacKay
DefinedTerm Municipal Opportunities Fund;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a
material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report,
fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the
periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed to the registrant's auditors and the
audit committee of the registrant's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

------

---

| | |
|:---|:---|
| By: | <u>/s/ Kirk C. Lehneis</u> |
|  | Kirk C. Lehneis |
|  | President and Principal Executive Officer,<br>MainStay MacKay DefinedTerm Municipal<br>Opportunities Fund |
|  | Date: February 3, 2023 |

---

------

**SECTION 302 CERTIFICATIONS** 

I, Jack R. Benintende, Treasurer and Principal Financial and Accounting Officer of MainStay MacKay DefinedTerm Municipal Opportunities Fund, certify that:

1. I have reviewed this report on Form N-CSR of MainStay MacKay
DefinedTerm Municipal Opportunities Fund;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a
material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report,
fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the
periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed to the registrant's auditors and the
audit committee of the registrant's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

------

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

---

| | |
|:---|:---|
| By: | <u>/s/ Jack R. Benintende</u> |
|  | Jack R. Benintende |
|  | Treasurer and Principal Financial and |
|  | Accounting Officer, |
|  | MainStay MacKay DefinedTerm Municipal<br> Opportunities Fund |
|  | Date: February 3, 2023 |

---

## Exhibit 99.906

Exhibit (b)

**SECTION 906 CERTIFICATIONS** 

In connection with this report on Form N-CSR for the Registrant as furnished to the Securities and Exchange Commission on the date hereof (the "Report"), the undersigned hereby certifies, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

&nbsp;&nbsp;&nbsp;&nbsp;(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as applicable; and

&nbsp;&nbsp;&nbsp;&nbsp;(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

---

| | |
|:---|:---|
| By: | <u>/s/ Kirk C. Lehneis</u> |
|  | Kirk C. Lehneis |
|  | President and Principal Executive Officer,<br> MainStay MacKay DefinedTerm Municipal<br> Opportunities Fund |
|  | Date: February 3, 2023 |

---

------

**SECTION 906 CERTIFICATIONS** 

In connection with this report on Form N-CSR for the Registrant as furnished to the Securities and Exchange Commission on the date hereof (the "Report"), the undersigned hereby certifies, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

&nbsp;&nbsp;&nbsp;&nbsp;(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as applicable; and

&nbsp;&nbsp;&nbsp;&nbsp;(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

---

| | |
|:---|:---|
| By: | <u>/s/ Jack R. Benintende</u> |
|  | Jack R. Benintende |
|  | Treasurer and Principal Financial |
|  | and Accounting Officer, |
|  | MainStay MacKay DefinedTerm Municipal<br> Opportunities Fund |
|  | Date: February 3, 2023 |

---