# EDGAR Filing Document

**Accession Number:** 0000787441
**File Stem:** 0001741773-23-000567
**Filing Date:** 2023-2
**Character Count:** 29029
**Document Hash:** a0d0716a2669c105c8a344fa1cfa6c0a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001741773-23-000567.hdr.sgml**: 20230228

**ACCESSION NUMBER**: 0001741773-23-000567

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20230228

**DATE AS OF CHANGE**: 20230228

**EFFECTIVENESS DATE**: 20230228

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MAINSTAY FUNDS
- **CENTRAL INDEX KEY:** 0000787441
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-02610
- **FILM NUMBER:** 23678738

**BUSINESS ADDRESS:**
- **STREET 1:** 51 MADISON AVE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10010
- **BUSINESS PHONE:** 2125767000

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

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MACKAY SHIELDS MAINSTAY SERIES FUND /NY/
- **DATE OF NAME CHANGE:** 19911126

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MACKAY SHIELDS SERIES FUND
- **DATE OF NAME CHANGE:** 19860506

## Series and Classes Contracts Data

### MainStay WMC Value Fund (Series ID: S000006906)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000018730 | Class A        | MAPAX           |
| C000018731 | Class B        | MAPBX           |
| C000018732 | Class C        | MMPCX           |
| C000018733 | Class I        | MUBFX           |
| C000018734 | Class R1       | MAPRX           |
| C000018735 | Class R2       | MPRRX           |
| C000030959 | Class R3       | MMAPX           |
| C000060801 | INVESTOR CLASS | MSMIX           |
| C000185571 | Class R6       | MMPDX           |

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;![](img_40f5ea6693314f1.jpg)<br>**MainStay WMC Value Fund** | &nbsp;&nbsp;![](img_40f5ea6693314f1.jpg)<br>**MainStay WMC Value Fund** | **Summary Prospectus**<br>February 28, 2023  |
| &nbsp;&nbsp;**Class**/Ticker | **A** MAPAX **Investor** MSMIX **B** MAPBX **C** MMPCX **I** MUBFX **R1** MAPRX **R2** MPRRX **R3** MMAPX **R6** MMPDX | **A** MAPAX **Investor** MSMIX **B** MAPBX **C** MMPCX **I** MUBFX **R1** MAPRX **R2** MPRRX **R3** MMAPX **R6** MMPDX |

---

Before you invest, you may want to review the Fund's Prospectus, which contains more information about the Fund and its risks. You can find the Fund's Prospectus, reports to shareholders and other information about the Fund by going online to newyorklifeinvestments.com, by calling 800-624-6782 or by sending an e-mail to MainStayShareholderServices@nylim.com. The Fund's Prospectus and Statement of Additional Information, both dated February 28, 2023, as may be amended from time to time, are incorporated by reference into this Summary Prospectus.

**Investment Objective**

The Fund seeks long-term appreciation of capital.

**Fees and Expenses of the Fund** 

The table below describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. **You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.** You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund. In addition, different financial intermediary firms and financial professionals may impose different sales loads and waivers. More information about these and other discounts or waivers is available from your financial professional, in the "Information on Sales Charges" section starting on page 103 of the Prospectus and Appendix A – Intermediary-Specific Sales Charge Waivers and Discounts, and in the "Alternative Sales Arrangements" section on page 138 of the Statement of Additional Information.

---

| | | | | | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Class A** | **Investor Class** | **Class B<sup>1</sup>** | **Class B<sup>1</sup>** | **Class C** | **Class C** | **Class I** | **Class R1** | **Class R1** | **Class R2** | **Class R2** | **Class R3**  | **Class R3**  | **Class R6**  | **Class R6**  |
| **Shareholder Fees** (fees paid directly from your investment) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) | 5.50 | 5.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of the original offering price or redemption proceeds) | None<br><sup>2</sup>  | None<br><sup>2</sup>  | 5.00 | % | 1.00 | % |  |  |  |  |  |  |  |  |  |
| **Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the value of your investment) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Management Fees (as an annual percentage of the Fund's average daily net assets)<sup>3</sup> | 0.66 | 0.66 | 0.66 | % | 0.66 | % | 0.66 | 0.66 | % | 0.66 | % | 0.66 | % | 0.66 | % |
| Distribution and/or Service (12b-1) Fees | 0.25 | 0.25 | 1.00 | % | 1.00 | % |  |  |  | 0.25 | % | 0.50 | % |  |  |
| Other Expenses | 0.11 | 0.35 | 0.35 | % | 0.35 | % | 0.11 | 0.21 | % | 0.21 | % | 0.21 | % | 0.04 | % |
| Total Annual Fund Operating Expenses | 1.02 | 1.26 | 2.01 | % | 2.01 | % | 0.77 | 0.87 | % | 1.12 | % | 1.37 | % | 0.70 | % |
| Waivers / Reimbursements<sup>4</sup> | 0.00 | 0.00 | 0.00 | % | 0.00 | % | (0.07 | 0.00 | % | 0.00 | % | 0.00 | % | 0.00 | % |
| Total Annual Fund Operating Expenses After Waivers / Reimbursements<sup>4</sup> | 1.02 | 1.26 | 2.01 | % | 2.01 | % | 0.70 | 0.87 | % | 1.12 | % | 1.37 | % | 0.70 | % |

---

1. Class B shares are closed to all new purchases as well as additional investments by existing Class B shareholders.

2. No initial sales charge applies on investments of $1 million or more (and certain other qualified purchases). However, a contingent deferred sales charge of 1.00% may be imposed on certain redemptions made within 18 months of the date of purchase on shares that were purchased without an initial sales charge.

3. The management fee is as follows: 0.66% on assets up to $1 billion; 0.64% on assets from $1 billion to $3 billion; and 0.62% on assets over $3 billion.

4. New York Life Investment Management LLC ("New York Life Investments") has contractually agreed to waive fees and/or reimburse expenses so that Total Annual Fund Operating Expenses (excluding taxes, interest, litigation, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and acquired (underlying) fund fees and expenses) for Class I shares do not exceed 0.70% of its average daily net assets. This agreement will remain in effect until February 28, 2024, and shall renew automatically for one-year terms unless New York Life Investments provides written notice of termination prior to the start of the next term or upon approval of the Board of Trustees of the Fund.

**Example**

The Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated whether or not you redeem all of your shares at the end of those periods (except as indicated with respect to Class B and Class C shares). The Example reflects Class B and Class C shares converting into Investor Class shares in years 9-10; expenses could be lower if you are eligible to convert to Class A shares instead. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects the contractual fee waiver and/or expense reimbursement arrangement, if applicable, for the current duration of the arrangement only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

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| | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **&nbsp;&nbsp;&nbsp;&nbsp;Expenses After** | **Class A** | **Investor** | **Class B** | **Class B** | **Class C** | **Class C** | **Class I** | **Class R1** | **Class R2** | **Class R3** | **Class R6** |
|  |  | **Class** | Assuming no redemption | Assuming redemption at end of period | Assuming no redemption | Assuming redemption at end of period |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;1 Year | $&nbsp;&nbsp;&nbsp;&nbsp; 648 | $&nbsp;&nbsp;&nbsp;&nbsp; 622 | $&nbsp;&nbsp;&nbsp;&nbsp; 204 | $&nbsp;&nbsp;&nbsp;&nbsp; 704 | $&nbsp;&nbsp;&nbsp;&nbsp; 204 | $&nbsp;&nbsp;&nbsp;&nbsp; 304 | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;72 | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;89 | $&nbsp;&nbsp;&nbsp;&nbsp; 114 | $&nbsp;&nbsp;&nbsp;&nbsp; 139 | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;72 |
| &nbsp;&nbsp;&nbsp;&nbsp;3 Years | $&nbsp;&nbsp;&nbsp;&nbsp; 857 | $&nbsp;&nbsp;&nbsp;&nbsp; 880 | $&nbsp;&nbsp;&nbsp;&nbsp; 630 | $&nbsp;&nbsp;&nbsp;&nbsp; 930 | $&nbsp;&nbsp;&nbsp;&nbsp; 630 | $&nbsp;&nbsp;&nbsp;&nbsp; 630 | $&nbsp;&nbsp;&nbsp;&nbsp; 239 | $&nbsp;&nbsp;&nbsp;&nbsp; 278 | $&nbsp;&nbsp;&nbsp;&nbsp; 356 | $&nbsp;&nbsp;&nbsp;&nbsp; 434 | $&nbsp;&nbsp;&nbsp;&nbsp; 224 |
| &nbsp;&nbsp;&nbsp;&nbsp;5 Years | $1082 | $1157 | $1083 | $1283 | $1083 | $1083 | $&nbsp;&nbsp;&nbsp;&nbsp; 421 | $&nbsp;&nbsp;&nbsp;&nbsp; 482 | $&nbsp;&nbsp;&nbsp;&nbsp; 617 | $&nbsp;&nbsp;&nbsp;&nbsp; 750 | $&nbsp;&nbsp;&nbsp;&nbsp; 390 |
| &nbsp;&nbsp;&nbsp;&nbsp;10 Years | $1729 | $1946 | $2144 | $2144 | $2144 | $2144 | $&nbsp;&nbsp;&nbsp;&nbsp; 948 | $1073 | $1363 | $1646 | $&nbsp;&nbsp;&nbsp;&nbsp; 871 |

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<br> (NYLIM) NL527 MSWV01 -02/23

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**Portfolio Turnover**

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 37% of the average value of its portfolio.

**Principal Investment Strategies** 

The Fund invests in equity securities issued by companies of any size or market capitalization range. While the Fund does not limit its investments to issuers within a particular capitalization range, it generally invests in large capitalization companies (as represented by the market capitalization range of the Russell 1000<sup><sup>®</sup></sup> Index, which ranged from $653 million to $2.1 trillion as of December 31, 2022). The Fund may invest in securities of foreign issuers, including securities of emerging market country issuers. An issuer of a security is considered to be a U.S. or foreign issuer based on the issuer's "country of risk" (or similar designation) as determined by a third-party such as Bloomberg. Wellington Management Company LLP, the Fund's Subadvisor (the "Subadvisor"), defines emerging market countries as those countries that are included in the MSCI Emerging Markets Index. The Fund may also invest in American Depositary Receipts.

**Investment Process:** The Subadvisor, seeks to identify companies that are financially sound but temporarily out-of-favor, and that provide above-average potential total returns at below average valuations. The Subadvisor employs a "bottom-up" approach to investment research and seeks to capitalize on investor behavioral biases by investing in companies with an attractive combination of valuation, quality, and capital return, and by taking a long-term view. Quality can be assessed across metrics including free cash flow margin, return on invested capital and net debt to EBITDA (earning before interest, taxes, depreciation and amortization). The Subadvisor may sell stocks when the Subadvisor's target price is achieved, the Subadvisor's fundamental outlook with respect to the stock has changed, or in the event the Subadvisor believes more attractive investment alternatives exist. To better assess strategic business issues that impact the performance of a company, the Subadvisor may also give consideration to financially material environmental, social and/or governance ("ESG") factors. The Subadvisor has discretion to determine the materiality of, as well as the level at which, financially relevant ESG factors are imbedded into its overall fundamental analysis when making an investment decision.

**Principal Risks** 

You can lose money by investing in the Fund. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. The investments selected by the Subadvisors may underperform the market in which the Fund invests or other investments. The Fund may receive large purchase or redemption orders which may have adverse effects on performance if the Fund were required to sell securities, invest cash or hold a relatively large amount of cash at times when it would not otherwise do so.

The principal risks of investing in the Fund are summarized below.

**Market Risk:** Changes in markets may cause the value of investments to fluctuate, which could cause the Fund to underperform other funds with similar investment objectives and strategies. Such changes may be rapid and unpredictable. From time to time, markets may experience periods of stress as a result of various market and economic factors for potentially prolonged periods that may result in: (i) increased market volatility; (ii) reduced market liquidity; and (iii) increased redemptions of shares. Such conditions may add significantly to the risk of volatility in the net asset value of the Fund's shares and adversely affect the Fund and its investments.

**Portfolio Management Risk:** The investment strategies, practices and risk analyses used by the Subadvisors may not produce the desired results or expected returns. The Subadvisor may give consideration to certain ESG criteria when evaluating an investment opportunity. The application of ESG criteria may result in the Fund (i) having exposure to certain securities or industry sectors that are significantly different than the composition of the Fund's benchmark; and (ii) performing differently than other funds and strategies in its peer group that do not take into account ESG criteria or the Fund's benchmark.

**Equity Securities Risk:** Investments in common stocks and other equity securities are particularly subject to the risk of changing economic, stock market, industry and company conditions and the risks inherent in the ability to anticipate such changes that can adversely affect the value of portfolio holdings.

**Value Stock Risk:** Value stocks may never reach what the Subadvisors believe is their full value or they may go down in value. In addition, different types of stocks tend to shift in and out of favor depending on market and economic conditions, and therefore the Fund's performance may be lower or higher than that of funds that invest in other types of equity securities.

**Market Capitalization Risk:** Investments in securities issued by small-, mid-, or large-cap companies will be subject to the risks associated with securities issued by companies of the applicable market capitalization. Securities of small-cap and mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than securities of larger companies. Smaller capitalization companies frequently rely on narrower product lines and niche markets and may be more vulnerable to adverse business or market developments. Securities issued by larger companies may have less growth potential and may not be able to attain the high growth rates of successful smaller companies, especially during strong economic periods. In addition, larger companies may be less capable of responding quickly to competitive challenges and industry changes, including those resulting from improvements in technology, and may suffer sharper price declines as a result of earnings disappointments. There is a risk that the securities issued by companies of a certain market capitalization may underperform the broader market at any given time.

**Foreign Securities Risk:** Investments in foreign (non-U.S.) securities may be riskier than investments in U.S. securities. Foreign regulatory regimes and securities markets can have less stringent investor protections and disclosure standards and less liquid trading markets than U.S. regulatory regimes and securities markets, and can experience political, social and economic developments that may affect the value of investments in foreign securities. Foreign securities may also subject the Fund's investments to changes in currency rates. Changes in the value of foreign currencies may make the return on an investment increase or decrease, unrelated to the quality or performance of the investment itself. Economic sanctions may be, and have been, imposed

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against certain countries, organizations, companies, entities and/or individuals. Economic sanctions and other similar governmental actions or developments could, among other things, effectively restrict or eliminate the Fund's ability to purchase or sell certain foreign securities or groups of foreign securities, and thus may make the Fund's investments in such securities less liquid or more difficult to value. Such sanctions may also cause a decline in the value of securities issued by the sanctioned country or companies located in or economically tied to the sanctioned country. In addition, as a result of economic sanctions and other similar governmental actions or developments, the Fund may be forced to sell or otherwise dispose of foreign investments at inopportune times or prices. The Fund may seek to hedge against its exposure to changes in the value of foreign currency, but there is no guarantee that such hedging techniques will be successful in reducing any related foreign currency valuation risk. These risks may be greater with respect to securities of companies that conduct their business activities in emerging markets or whose securities are traded principally in emerging markets.

**Depositary Receipts Risk:** Investments in depositary receipts may entail the special risks of investing in foreign securities, including currency exchange fluctuations, government regulations, and the potential for political and economic instability.

**Emerging Markets Risk:** The risks related to investing in foreign securities are generally greater with respect to securities of companies that conduct their business activities in emerging markets or whose securities are traded principally in emerging markets. The risks of investing in emerging markets are elevated under current conditions and include: (i) smaller trading volumes for such securities and limited access to investments in the event of market closures (including due to local holidays), which result in a lack of liquidity and in greater price volatility; (ii) less government regulation, which could lead to market manipulation, and less extensive, transparent and frequent accounting, auditing, recordkeeping, financial reporting and other requirements, which limit the quality and availability of financial information; (iii) the absence of developed legal systems, including structures governing private or foreign investment or allowing for judicial redress (such as limits on rights and remedies available) for investment losses and injury to private property; (iv) loss resulting from problems in share registration and custody; (v) sensitivity to adverse political or social events affecting the region where an emerging market is located; (vi) particular sensitivity to economic and political disruptions, including adverse effects stemming from wars, sanctions, trade restrictions, recessions, depressions or other economic crises, or reliance on international or other forms of aid, including trade, taxation and development policies; and (vii) the nationalization of foreign deposits or assets.

**Past Performance**

The following bar chart and table provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns compare with those of a broad-based securities market index over time. Sales loads, if any, are not reflected in the bar chart. If they were, returns would be less than those shown. The Fund has selected the Russell 1000<sup><sup>®</sup></sup> Value Index as its primary benchmark.

Index returns reflect no deductions for fees, expenses or taxes, except for foreign withholding taxes where applicable.

Performance data for the classes varies based on differences in their fee and expense structures. Performance data is not shown for classes with less than one calendar year of performance. Past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Please visit newyorklifeinvestments.com/funds for more recent performance information.

One of the Fund's subadvisors changed effective January 9, 2017, and the Fund's principal investment strategies changed effective February 28, 2017 and March 13, 2017. The past performance in the bar chart and table prior to these dates reflects the Fund's prior subadvisor and principal investment strategies.

Effective April 26, 2021, the Fund replaced both of its subadvisors and modified its principal investment strategies. The past performance in the bar chart and table prior to that date reflects the Fund's prior subadvisors and principal investment strategies.

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#### Annual Returns, Class I Shares

#### (by calendar year 2013-2022)
![PerformanceBarChartData(2013:31.03, 2014:8.99, 2015:-2.76, 2016:8.51, 2017:22.77, 2018:-7, 2019:31.78, 2020:13.59, 2021:26.37, 2022:-4.52)](img_20e2b5a5d8834f1.jpg)

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| | |
|:---|:---|
| **Best Quarter** | **Best Quarter** |
| 2020, Q2 | 22.20% |
| **Worst Quarter** | **Worst Quarter** |
| 2020, Q1 | -25.79% |

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**Average Annual Total Returns** (for the periods ended December 31, 2022)

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| | | | | |
|:---|:---|:---|:---|:---|
| | Inception<br>| &nbsp;&nbsp;&nbsp;&nbsp; 1 Year<br> | 5 Years<br> | 10 Years or <br>Since Inception  |
| Return Before Taxes |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class I | 1/21/1971 | -4.52% | 10.93% | 12.01% |
| Return After Taxes on Distributions |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class I |  | -5.76% | 6.89% | 8.83% |
| Return After Taxes on Distributions and Sale of Fund Shares |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class I |  | -1.77% | 8.30% | 9.33% |
| Return Before Taxes |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | 6/9/1999 | -10.05% | 9.38% | 11.08% |
| &nbsp;&nbsp;&nbsp;Investor Class | 2/28/2008 | -9.83% | 9.10% | 10.84% |
| &nbsp;&nbsp;&nbsp;Class B | 6/9/1999 | -10.17% | 9.37% | 10.64% |
| &nbsp;&nbsp;&nbsp;Class C | 6/9/1999 | -6.66% | 9.52% | 10.64% |
| &nbsp;&nbsp;&nbsp;Class R1 | 1/2/2004 | -4.67% | 10.79% | 11.88% |
| &nbsp;&nbsp;&nbsp;Class R2 | 1/2/2004 | -4.95% | 10.50% | 11.60% |
| &nbsp;&nbsp;&nbsp;Class R3 | 4/28/2006 | -5.17% | 10.23% | 11.32% |
| &nbsp;&nbsp;&nbsp;Class R6 | 4/26/2021 | -4.56% | N/A | 2.92% |
| Russell 1000<sup>®</sup> Value Index<sup>1</sup> | Russell 1000<sup>®</sup> Value Index<sup>1</sup> | -7.54% | 6.67% | 10.29% |

---

1. The Russell 1000<sup><sup>®</sup></sup> Value Index measures the performance of the large-cap value segment of the U.S. equity universe. It includes those Russell 1000<sup><sup>®</sup></sup> Index companies with lower price-to-book ratios and lower expected growth values.

After-tax returns are calculated using the highest individual federal marginal income tax rates in effect at the time of each distribution or capital gain or upon the sale of Fund shares, and do not reflect the impact of state and local taxes. In some cases, the return after taxes may exceed the return before taxes due to an assumed tax benefit from any losses on a sale of shares at the end of the measurement period. Actual after-tax returns depend on your tax situation and may differ from those shown. After-tax returns are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns shown are for Class I shares. After-tax returns for the other share classes may vary.

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**Management**

New York Life Investment Management LLC serves as the Manager. Wellington Management Company LLP serves as the Subadvisor. The individual listed below is primarily responsible for day-to-day portfolio management.

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| | | |
|:---|:---|:---|
| **Subadvisor** | **Portfolio Manager** | **Service Date** |
| Wellington Management Company LLP | Adam H. Illfelder, Senior Managing Director and Equity Portfolio Manager | Since 2021 |

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**How to Purchase and Sell Shares**

You may purchase or sell shares of the Fund on any day the Fund is open for business by contacting your financial adviser or financial intermediary firm, or by contacting the Fund by telephone at **800-624-6782**, by mail at MainStay Funds, P.O. Box 219003, Kansas City, MO 64121-9000, by overnight mail to 430 West 7<sup>th</sup> Street, Suite 219003, Kansas City, MO 64105-1407, or by accessing our website at newyorklifeinvestments.com/accounts.

Class R6 shares are generally only available to certain retirement plans invested in the Fund through omnibus accounts (either at the plan level or omnibus accounts held on the books of the Fund). Class R6 shares are generally not available to retail accounts. Generally, an initial investment minimum of $1,000 applies if you invest in Investor Class or Class C shares, $15,000 for Class A shares and $1,000,000 for individual investors in Class I shares investing directly (i) with the Fund or (ii) through certain private banks and trust companies that have an agreement with NYLIFE Distributors LLC, the Fund's principal underwriter and distributor, or its affiliates. A subsequent investment minimum of $50 applies to investments in Investor Class and Class C shares. However, for Investor Class and Class C shares purchased through AutoInvest, MainStay's systematic investment plan, a $500 initial investment minimum and a $50 minimum for subsequent purchases applies. Class A shares have no subsequent investment minimum. Class R1 shares, Class R2 shares, Class R3 shares, Class R6 shares and institutional shareholders in Class I shares have no initial or subsequent investment minimums. Class B shares are closed to all new purchases and additional investments by existing Class B shareholders.

Certain financial intermediaries through whom you may invest may impose their own investment minimums, fees, policies and procedures for purchasing and selling Fund shares, which are not described in this Prospectus or the Statement of Additional Information, and which will depend on the policies, procedures and trading platforms of the financial intermediary. Consult a representative of your financial intermediary about the availability of shares of the Fund and the intermediary's policies, procedures and other information.

**Tax Information**

The Fund's distributions are generally taxable to you as ordinary income, capital gains, or a combination of the two, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or an individual retirement account.

**Compensation to Financial Intermediary Firms**

If you purchase Fund shares through a financial intermediary firm (such as a broker/dealer or bank), the Fund and its related companies may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the financial intermediary firm or your financial adviser to recommend the Fund over another investment. Ask your financial adviser or visit your financial intermediary firm's website for more information. No compensation, administrative payments, sub-transfer agency payments or service payments are paid to broker/dealers or other financial intermediaries from Fund assets or the Distributor's or an affiliate's resources on sales of or investments in Class R6 shares. The Distributor or an affiliate may pay de minimis amounts to intermediaries for setup, connectivity or other technological expenses. Class R6 shares do not carry sales charges or pay Rule 12b-1 fees, or make payments to financial intermediaries to assist in, or in connection with, the sale of the Fund's shares.

"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.

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