# EDGAR Filing Document

**Accession Number:** 0000787441
**File Stem:** 0001926623-23-000016
**Filing Date:** 2023-3
**Character Count:** 28512
**Document Hash:** 691bcf44aa0d27c59690d2dc2b5cf2fe
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001926623-23-000016.hdr.sgml**: 20230307

**ACCESSION NUMBER**: 0001926623-23-000016

**CONFORMED SUBMISSION TYPE**: N-MFP2

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230228

**FILED AS OF DATE**: 20230307

**DATE AS OF CHANGE**: 20230307

**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:** N-MFP2
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-04550
- **FILM NUMBER:** 23711990

**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 Money Market Fund (Series ID: S000006897)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000018697 | Class A        | MMAXX           |
| C000018698 | Class B        | MKMXX           |
| C000018699 | Class C        | MSCXX           |
| C000060793 | INVESTOR CLASS | MKTXX           |
| C000221692 | SIMPLE CLASS   | MIPXX           |

# Form N-MFP: Monthly Schedule of Portfolio Holdings

## N-MFP: Filer Information

**Submission Type:** N-MFP2

**Live/Test Flag:** —

**Is Electronic Copy of Paper Format:** —

**CIK:** —

### General Information

**Report for (YYYY-MM-DD):** 2023-02-28

**EDGAR Series Identifier:** S000006897

**Total number of share classes in the series:** —

**Is this the fund's final filing on Form N-MFP?:** —

**Is Fund Liquidating?:** —

**Is Fund Merging/Being Acquired?:** —

**Has the fund acquired or merged with another fund during the reporting period?:** —

## Part A: Series-Level Information about the Fund

### Service Providers
| Item   | Role                          | Details                                      | File/CIK Number   |
|:---|:---|:---|:---|
| A.5    | Administrator                 | New York Life Investment Management LLC      |  |
| A.4    | Independent Public Accountant | KPMG LLP<br>City: Philadelphia<br>State: PA  |  |
| A.6    | Transfer Agent                | NYLIM Service Company LLC<br>CIK: 0001103598 | 084-05844         |

### Fund Characteristics & Assets

- **A.1 - Securities Act File Number:** 033-02610

- **A.7 - Is this a Feeder Fund?:** No

- **A.8 - Is this a Master Fund?:** No

- **A.9 - Is this series primarily used to fund insurance company separate accounts?:** No

- **A.10 - Money Market Fund Category:** Prime

- **A.11 - WAM:** 17 days

- **A.12 - WAL:** 17 days

- **Total Value of Portfolio Securities:** $474686977.57

- **Amortized Cost of Portfolio Securities:** $474721345.19

- **Cash:** $1003.30

- **Total Other Assets:** $20692.94

- **Total Liabilities:** $2112052.76

- **Net Assets of Series:** $472630988.67

- **Number of Shares Outstanding (Series):** 472648008.29

- **Stable Price Per Share:** $1.00

- **7-Day Gross Yield:** 4.6600%

### Weekly Liquid Assets
| Period         | Daily Liquid Assets ($)   | Weekly Liquid Assets ($)   | Daily Liquid Assets (%)   | Weekly Liquid Assets (%)   |
|:---|:---|:---|:---|:---|
| Friday, Week 1 |  | $364805509.14              |  | 75.2900%                   |
| Friday, Week 2 |  | $261407657.51              |  | 54.4100%                   |
| Friday, Week 3 |  | $215964938.64              |  | 45.4100%                   |
| Friday, Week 4 |  | $257912149.25              |  | 54.0600%                   |

## Part B: Class-Level Information about the Fund

### Class: Unknown Class (—)

- **B.2 - Minimum Initial Investment:** $15000.00

- **B.3 - Net Assets of Class:** $413539093.52

- **B.4 - Shares Outstanding:** 413542729.72

- **B.7.7 - 7-Day Net Yield:** 4.1400%

- **Person Paying for Fund Expenses?:** No

**Weekly Flows:**

| Period   | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| Week 1   | $9572161.70               | $10258951.71            |
| Week 2   | $3234616.15               | $6983337.49             |
| Week 3   | $7943587.56               | $13281652.29            |
| Week 4   | $5235451.41               | $3902020.21             |

**Monthly Shareholder Flow Activity:**

- **Gross Subscriptions for month:** $25244957.08

- **Gross Redemptions for month:** $36465924.13

### Class: Unknown Class (—)

- **B.2 - Minimum Initial Investment:** $1000.00

- **B.3 - Net Assets of Class:** $23065419.78

- **B.4 - Shares Outstanding:** 23068935.44

- **B.7.7 - 7-Day Net Yield:** 3.8600%

- **Person Paying for Fund Expenses?:** Yes

- **Expense Reimbursement/Waiver Description:** New York Life Investment Management, LLC, Expense Waiver, 1598.66;

**Weekly Flows:**

| Period   | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| Week 1   | $93193.28                 | $38935.40               |
| Week 2   | $1560.94                  | $64868.92               |
| Week 3   | $22695.51                 | $108233.25              |
| Week 4   | $0.00                     | $31004.10               |

**Monthly Shareholder Flow Activity:**

- **Gross Subscriptions for month:** $143167.84

- **Gross Redemptions for month:** $250429.27

### Class: Unknown Class (—)

- **B.2 - Minimum Initial Investment:** $1000.00

- **B.3 - Net Assets of Class:** $16991241.57

- **B.4 - Shares Outstanding:** 16991296.89

- **B.7.7 - 7-Day Net Yield:** 3.8600%

- **Person Paying for Fund Expenses?:** Yes

- **Expense Reimbursement/Waiver Description:** New York Life Investment Management, LLC, Expense Waiver, 1187.17;

**Weekly Flows:**

| Period   | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| Week 1   | $279833.73                | $152017.07              |
| Week 2   | $57388.32                 | $365222.25              |
| Week 3   | $310242.21                | $129075.73              |
| Week 4   | $77959.97                 | $266625.80              |

**Monthly Shareholder Flow Activity:**

- **Gross Subscriptions for month:** $709429.11

- **Gross Redemptions for month:** $966432.67

### Class: Unknown Class (—)

- **B.2 - Minimum Initial Investment:** $1000.00

- **B.3 - Net Assets of Class:** $18823618.06

- **B.4 - Shares Outstanding:** 18833429.58

- **B.7.7 - 7-Day Net Yield:** 3.8600%

- **Person Paying for Fund Expenses?:** Yes

- **Expense Reimbursement/Waiver Description:** New York Life Investment Management, LLC, Expense Waiver, 1303.69;

**Weekly Flows:**

| Period   | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| Week 1   | $223514.33                | $210029.36              |
| Week 2   | $177492.58                | $146630.01              |
| Week 3   | $190253.71                | $167772.93              |
| Week 4   | $171576.62                | $160221.85              |

**Monthly Shareholder Flow Activity:**

- **Gross Subscriptions for month:** $689499.00

- **Gross Redemptions for month:** $648455.78

### Class: Unknown Class (—)

- **B.2 - Minimum Initial Investment:** $1.00

- **B.3 - Net Assets of Class:** $211615.74

- **B.4 - Shares Outstanding:** 211616.66

- **B.7.7 - 7-Day Net Yield:** 4.0500%

- **Person Paying for Fund Expenses?:** No

**Weekly Flows:**

| Period   | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| Week 1   | $109113.15                | $0.00                   |
| Week 2   | $0.00                     | $55527.83               |
| Week 3   | $402.30                   | $0.00                   |

**Monthly Shareholder Flow Activity:**

- **Gross Subscriptions for month:** $109716.60

- **Gross Redemptions for month:** $55527.83

## Part C: Schedule of Portfolio Securities

### Security 1: Alabama Power Co.

- **C.1 - Title:** Alabama Power Co. 4.674
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 01039MQ72, C.4 - ISIN: US01039MQ727, C.3 - LEI: 0RL818ELFOHP5JHOFU19
- **C.18 - Value (incl. sponsor support):** $19982418.40
- **C.18.a - Value (excl. sponsor support):** $19982418.40
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2300%
- **C.17 - Yield as of Reporting Date:** 4.6700%
- **C.11 - Maturity Date (WAM):** 2023-03-07
- **C.12 - Maturity Date (WAL):** 2023-03-07
- **C.13 - Final Legal Maturity Date:** 2023-03-07
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

### Security 2: American Transmission Co. LLC

- **C.1 - Title:** American Transmission Co. LLC 4.595
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 03028UQ81, C.4 - ISIN: US03028UQ812
- **C.18 - Value (incl. sponsor support):** $19979857.80
- **C.18.a - Value (excl. sponsor support):** $19979857.80
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2300%
- **C.17 - Yield as of Reporting Date:** 4.6000%
- **C.11 - Maturity Date (WAM):** 2023-03-08
- **C.12 - Maturity Date (WAL):** 2023-03-08
- **C.13 - Final Legal Maturity Date:** 2023-03-08
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? No, C.23 Categorized at Level 3? No

### Security 3: Archer-Daniels-Midland Co.

- **C.1 - Title:** Archer-Daniels-Midland Co. 4.554
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 03948HQ79, C.4 - ISIN: US03948HQ792, C.3 - LEI: 549300LO13MQ9HYSTR83
- **C.18 - Value (incl. sponsor support):** $19982573.80
- **C.18.a - Value (excl. sponsor support):** $19982573.80
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2300%
- **C.17 - Yield as of Reporting Date:** 4.5500%
- **C.11 - Maturity Date (WAM):** 2023-03-07
- **C.12 - Maturity Date (WAL):** 2023-03-07
- **C.13 - Final Legal Maturity Date:** 2023-03-07
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

### Security 4: Colgate-Palmolive Co.

- **C.1 - Title:** Colgate-Palmolive Co. 4.511
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 19416FQ15, C.4 - ISIN: US19416FQ150, C.3 - LEI: YMEGZFW4SBUSS5BQXF88
- **C.18 - Value (incl. sponsor support):** $19997526.20
- **C.18.a - Value (excl. sponsor support):** $19997526.20
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2300%
- **C.17 - Yield as of Reporting Date:** 4.5100%
- **C.11 - Maturity Date (WAM):** 2023-03-01
- **C.12 - Maturity Date (WAL):** 2023-03-01
- **C.13 - Final Legal Maturity Date:** 2023-03-01
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.20 Is a Daily Liquid Asset? Yes, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

### Security 5: Cummins, Inc.

- **C.1 - Title:** Cummins, Inc. 4.569
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 23102VQF0, C.4 - ISIN: US23102VQF03, C.3 - LEI: ZUNI8PYC725B6H8JU438
- **C.18 - Value (incl. sponsor support):** $19962083.40
- **C.18.a - Value (excl. sponsor support):** $19962083.40
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2200%
- **C.17 - Yield as of Reporting Date:** 4.5700%
- **C.11 - Maturity Date (WAM):** 2023-03-15
- **C.12 - Maturity Date (WAL):** 2023-03-15
- **C.13 - Final Legal Maturity Date:** 2023-03-15
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? No, C.23 Categorized at Level 3? No

### Security 6: Emerson Electric Co.

- **C.1 - Title:** Emerson Electric Co. 4.572
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 29101BQM7, C.4 - ISIN: US29101BQM71, C.3 - LEI: FGLT0EWZSUIRRITFOA30
- **C.18 - Value (incl. sponsor support):** $19947231.60
- **C.18.a - Value (excl. sponsor support):** $19947231.60
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2200%
- **C.17 - Yield as of Reporting Date:** 4.5700%
- **C.11 - Maturity Date (WAM):** 2023-03-21
- **C.12 - Maturity Date (WAL):** 2023-03-21
- **C.13 - Final Legal Maturity Date:** 2023-03-21
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? No, C.23 Categorized at Level 3? No

### Security 7: Hershey Co. (The)

- **C.1 - Title:** Hershey Co. (The) 4.505
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 42786UQ99, C.4 - ISIN: US42786UQ990, C.3 - LEI: 21X2CX66SU2BR6QTAD08
- **C.18 - Value (incl. sponsor support):** $19977565.00
- **C.18.a - Value (excl. sponsor support):** $19977565.00
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2300%
- **C.17 - Yield as of Reporting Date:** 4.5100%
- **C.11 - Maturity Date (WAM):** 2023-03-09
- **C.12 - Maturity Date (WAL):** 2023-03-09
- **C.13 - Final Legal Maturity Date:** 2023-03-09
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? No, C.23 Categorized at Level 3? No

### Security 8: John Deere Canada ULC

- **C.1 - Title:** John Deere Canada ULC 4.532
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 24423JQ34, C.4 - ISIN: US24423JQ342, C.3 - LEI: 54930034SQM5911PYS66
- **C.18 - Value (incl. sponsor support):** $19992476.60
- **C.18.a - Value (excl. sponsor support):** $19992476.60
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2300%
- **C.17 - Yield as of Reporting Date:** 4.5300%
- **C.11 - Maturity Date (WAM):** 2023-03-03
- **C.12 - Maturity Date (WAL):** 2023-03-03
- **C.13 - Final Legal Maturity Date:** 2023-03-03
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? Yes, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

**C.15.a - Guarantor Details:**

- **Identity of Guarantor:** DEERE & COMPANY

- **Amount Provided:** 1.0000

### Security 9: Massachusetts Mutual Life Insurance Co.

- **C.1 - Title:** Massachusetts Mutual Life Insurance Co. 4.593
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 57576KQN2, C.4 - ISIN: US57576KQN27, C.3 - LEI: R6ZXK5P01NP6HXSY1S07
- **C.18 - Value (incl. sponsor support):** $19944278.80
- **C.18.a - Value (excl. sponsor support):** $19944278.80
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2200%
- **C.17 - Yield as of Reporting Date:** 4.5900%
- **C.11 - Maturity Date (WAM):** 2023-03-22
- **C.12 - Maturity Date (WAL):** 2023-03-22
- **C.13 - Final Legal Maturity Date:** 2023-03-22
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? No, C.23 Categorized at Level 3? No

### Security 10: National Rural Utilities Cooperative Finance Corp.

- **C.1 - Title:** National Rural Utilities Cooperative Finance Corp. 4.749
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 63743DQF1, C.4 - ISIN: US63743DQF14, C.3 - LEI: 4NYF266XZC35SCTGX023
- **C.18 - Value (incl. sponsor support):** $19962083.40
- **C.18.a - Value (excl. sponsor support):** $19962083.40
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2200%
- **C.17 - Yield as of Reporting Date:** 4.7500%
- **C.11 - Maturity Date (WAM):** 2023-03-15
- **C.12 - Maturity Date (WAL):** 2023-03-15
- **C.13 - Final Legal Maturity Date:** 2023-03-15
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? No, C.23 Categorized at Level 3? No

### Security 11: Nestle Finance International Ltd.

- **C.1 - Title:** Nestle Finance International Ltd. 4.552
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 64106HQ38, C.4 - ISIN: US64106HQ389, C.3 - LEI: 0KLLMNHINTFDRMU6DI05
- **C.18 - Value (incl. sponsor support):** $19992685.00
- **C.18.a - Value (excl. sponsor support):** $19992685.00
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2300%
- **C.17 - Yield as of Reporting Date:** 4.5500%
- **C.11 - Maturity Date (WAM):** 2023-03-03
- **C.12 - Maturity Date (WAL):** 2023-03-03
- **C.13 - Final Legal Maturity Date:** 2023-03-03
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? Yes, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

**C.15.a - Guarantor Details:**

- **Identity of Guarantor:** NESTLE S.A

- **Amount Provided:** 1.0000

### Security 12: PACCAR Financial Corp.

- **C.1 - Title:** PACCAR Financial Corp. 4.548
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 69372BQE3, C.4 - ISIN: US69372BQE38, C.3 - LEI: PH3S12DWZBHHQKVYZ297
- **C.18 - Value (incl. sponsor support):** $19964634.40
- **C.18.a - Value (excl. sponsor support):** $19964634.40
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2200%
- **C.17 - Yield as of Reporting Date:** 4.5500%
- **C.11 - Maturity Date (WAM):** 2023-03-14
- **C.12 - Maturity Date (WAL):** 2023-03-14
- **C.13 - Final Legal Maturity Date:** 2023-03-14
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? Yes, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? No, C.23 Categorized at Level 3? No

**C.15.a - Guarantor Details:**

- **Identity of Guarantor:** PACCAR INC

- **Amount Provided:** 1.0000

### Security 13: Province of Quebec Canada

- **C.1 - Title:** Province of Quebec Canada 4.533
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 74800KQ62, C.4 - ISIN: US74800KQ629, C.3 - LEI: 549300WN65YFEQH74Y36
- **C.18 - Value (incl. sponsor support):** $19985106.60
- **C.18.a - Value (excl. sponsor support):** $19985106.60
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2300%
- **C.17 - Yield as of Reporting Date:** 4.5300%
- **C.11 - Maturity Date (WAM):** 2023-03-06
- **C.12 - Maturity Date (WAL):** 2023-03-06
- **C.13 - Final Legal Maturity Date:** 2023-03-06
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

### Security 14: Rockwell Automation, Inc.

- **C.1 - Title:** Rockwell Automation, Inc. 4.561
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 7743E3Q25, C.4 - ISIN: US7743E3Q259, C.3 - LEI: VH3R4HHBHH12O0EXZJ88
- **C.18 - Value (incl. sponsor support):** $19994905.60
- **C.18.a - Value (excl. sponsor support):** $19994905.60
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2300%
- **C.17 - Yield as of Reporting Date:** 4.5600%
- **C.11 - Maturity Date (WAM):** 2023-03-02
- **C.12 - Maturity Date (WAL):** 2023-03-02
- **C.13 - Final Legal Maturity Date:** 2023-03-02
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

### Security 15: Southern California Gas Co.

- **C.1 - Title:** Southern California Gas Co. 4.593
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 84243MQ62, C.4 - ISIN: US84243MQ626, C.3 - LEI: XY0N0J73VHV5F4CUJV89
- **C.18 - Value (incl. sponsor support):** $19985073.40
- **C.18.a - Value (excl. sponsor support):** $19985073.40
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2300%
- **C.17 - Yield as of Reporting Date:** 4.5900%
- **C.11 - Maturity Date (WAM):** 2023-03-06
- **C.12 - Maturity Date (WAL):** 2023-03-06
- **C.13 - Final Legal Maturity Date:** 2023-03-06
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

### Security 16: Stanley Black & Decker, Inc.

- **C.1 - Title:** Stanley Black & Decker, Inc. 4.562
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 85462DQ30, C.4 - ISIN: US85462DQ307, C.3 - LEI: 549300DJ09SMTO561131
- **C.18 - Value (incl. sponsor support):** $19992410.00
- **C.18.a - Value (excl. sponsor support):** $19992410.00
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2300%
- **C.17 - Yield as of Reporting Date:** 4.5600%
- **C.11 - Maturity Date (WAM):** 2023-03-03
- **C.12 - Maturity Date (WAL):** 2023-03-03
- **C.13 - Final Legal Maturity Date:** 2023-03-03
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

### Security 17: Toyota Motor Credit Corp.

- **C.1 - Title:** Toyota Motor Credit Corp. 5.113
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 89233HV84, C.4 - ISIN: US89233HV846, C.3 - LEI: Z2VZBHUMB7PWWJ63I008
- **C.18 - Value (incl. sponsor support):** $19559843.80
- **C.18.a - Value (excl. sponsor support):** $19559843.80
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1400%
- **C.17 - Yield as of Reporting Date:** 5.1100%
- **C.11 - Maturity Date (WAM):** 2023-08-08
- **C.12 - Maturity Date (WAL):** 2023-08-08
- **C.13 - Final Legal Maturity Date:** 2023-08-08
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.21 Is a Weekly Liquid Asset? No, C.23 Categorized at Level 3? No

### Security 18: Wisconsin Public Service Corp.

- **C.1 - Title:** Wisconsin Public Service Corp. 4.701
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 97684HQ12, C.4 - ISIN: US97684HQ121, C.3 - LEI: 549300BJRHJVYNUMQZ30
- **C.18 - Value (incl. sponsor support):** $19997437.20
- **C.18.a - Value (excl. sponsor support):** $19997437.20
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.2300%
- **C.17 - Yield as of Reporting Date:** 4.7000%
- **C.11 - Maturity Date (WAM):** 2023-03-01
- **C.12 - Maturity Date (WAL):** 2023-03-01
- **C.13 - Final Legal Maturity Date:** 2023-03-01
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.20 Is a Daily Liquid Asset? Yes, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

### Security 19: U.S. Treasury Bills

- **C.1 - Title:** U.S. Treasury Bills 4.532
- **C.6 - Investment Category:** U.S. Treasury Debt
- **Identifiers:** C.3 - CUSIP: 912796Z85, C.4 - ISIN: US912796Z855, C.3 - LEI: 254900HROIFWPRGM1V77
- **C.18 - Value (incl. sponsor support):** $74745881.25
- **C.18.a - Value (excl. sponsor support):** $74745881.25
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 15.8100%
- **C.17 - Yield as of Reporting Date:** 4.5300%
- **C.11 - Maturity Date (WAM):** 2023-03-28
- **C.12 - Maturity Date (WAL):** 2023-03-28
- **C.13 - Final Legal Maturity Date:** 2023-03-28
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.20 Is a Daily Liquid Asset? Yes, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

### Security 20: U.S. Treasury Bills

- **C.1 - Title:** U.S. Treasury Bills 4.531
- **C.6 - Investment Category:** U.S. Treasury Debt
- **Identifiers:** C.3 - CUSIP: 912796Y86, C.4 - ISIN: US912796Y866, C.3 - LEI: 254900HROIFWPRGM1V77
- **C.18 - Value (incl. sponsor support):** $10991905.32
- **C.18.a - Value (excl. sponsor support):** $10991905.32
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 2.3300%
- **C.17 - Yield as of Reporting Date:** 4.5300%
- **C.11 - Maturity Date (WAM):** 2023-03-07
- **C.12 - Maturity Date (WAL):** 2023-03-07
- **C.13 - Final Legal Maturity Date:** 2023-03-07
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.20 Is a Daily Liquid Asset? Yes, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

### Security 21: RBC Capital Markets LLC

- **C.1 - Title:** RBC Capital Markets LLC 4.51
- **C.6 - Investment Category:** U.S. Treasury Repurchase Agreement, if collateralized only by U.S. Treasuries (including Strips) and cash
- **Identifiers:** C.3 - CUSIP: ZS1K9NZ, C.3 - LEI: 549300LCO2FLSSVFFR64, CIK: 0000895502
- **C.18 - Value (incl. sponsor support):** $4749000.00
- **C.18.a - Value (excl. sponsor support):** $4749000.00
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 1.0000%
- **C.17 - Yield as of Reporting Date:** 4.5100%
- **C.11 - Maturity Date (WAM):** 2023-03-01
- **C.12 - Maturity Date (WAL):** 2023-03-01
- **C.13 - Final Legal Maturity Date:** 2023-03-01
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.20 Is a Daily Liquid Asset? Yes, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

### Security 22: TD Securities, Inc.

- **C.1 - Title:** TD Securities, Inc. 4.54
- **C.6 - Investment Category:** U.S. Treasury Repurchase Agreement, if collateralized only by U.S. Treasuries (including Strips) and cash
- **Identifiers:** C.3 - CUSIP: ZS1K9NX, CIK: 0000803012
- **C.18 - Value (incl. sponsor support):** $25000000.00
- **C.18.a - Value (excl. sponsor support):** $25000000.00
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 5.2900%
- **C.17 - Yield as of Reporting Date:** 4.5400%
- **C.11 - Maturity Date (WAM):** 2023-03-01
- **C.12 - Maturity Date (WAL):** 2023-03-01
- **C.13 - Final Legal Maturity Date:** 2023-03-01
- **Characteristics:** C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.20 Is a Daily Liquid Asset? Yes, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

## N-MFP: Signatures

**Registrant:** The MainStay Funds

**Date:** 2023-03-03

**By:** /s/Jack Benintende

**Name of Signing Officer:** Jack Benintende

**Title of Signing Officer:** Treasurer