# EDGAR Filing Document

**Accession Number:** 0000787441
**File Stem:** 0001926623-23-000010
**Filing Date:** 2023-2
**Character Count:** 29585
**Document Hash:** 6f21295a04d6f0d638b67a97decf5b8b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001926623-23-000010.hdr.sgml**: 20230207

**ACCESSION NUMBER**: 0001926623-23-000010

**CONFORMED SUBMISSION TYPE**: N-MFP2

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230131

**FILED AS OF DATE**: 20230207

**DATE AS OF CHANGE**: 20230207

**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:** 23593907

**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):** 2023-01-31

**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:** 11 days

- **A.12 - WAL:** 11 days

- **Total Value of Portfolio Securities:** $485445648.66

- **Amortized Cost of Portfolio Securities:** $485493439.59

- **Cash:** $116.23

- **Total Other Assets:** $410719.85

- **Total Liabilities:** $1783286.95

- **Net Assets of Series:** $484120988.72

- **Number of Shares Outstanding (Series):** 484138008.32

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

- **7-Day Gross Yield:** 4.4200%

### Weekly Liquid Assets
| Period         | Daily Liquid Assets ($)   | Weekly Liquid Assets ($)   | Daily Liquid Assets (%)   | Weekly Liquid Assets (%)   |
|:---|:---|:---|:---|:---|
| Friday, Week 1 |  | $309288502.03              |  | 63.2400%                   |
| Friday, Week 2 |  | $306553709.86              |  | 63.0500%                   |
| Friday, Week 3 |  | $228733932.78              |  | 46.8200%                   |
| Friday, Week 4 |  | $286191202.89              |  | 58.9000%                   |

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

### Class: Unknown Class (—)

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

- **B.3 - Net Assets of Class:** $424760060.57

- **B.4 - Shares Outstanding:** 424763696.77

- **B.7.7 - 7-Day Net Yield:** 3.9100%

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

**Weekly Flows:**

| Period   | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| Week 1   | $7036707.71               | $7508390.15             |
| Week 2   | $6697467.02               | $9539251.56             |
| Week 3   | $10317830.06              | $8208087.79             |
| Week 4   | $8039734.93               | $10892567.51            |

**Monthly Shareholder Flow Activity:**

- **Gross Subscriptions for month:** $34539043.53

- **Gross Redemptions for month:** $38766839.66

### Class: Unknown Class (—)

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

- **B.3 - Net Assets of Class:** $23172681.21

- **B.4 - Shares Outstanding:** 23176196.87

- **B.7.7 - 7-Day Net Yield:** 3.6200%

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

- **Expense Reimbursement/Waiver Description:** New York Life Investment Management, LLC, Expense Waiver, 1540.73;

**Weekly Flows:**

| Period   | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| Week 1   | $74465.98                 | $44384.94               |
| Week 2   | $4929.43                  | $133662.47              |
| Week 3   | $97645.92                 | $39588.04               |
| Week 4   | $1000.00                  | $104364.62              |

**Monthly Shareholder Flow Activity:**

- **Gross Subscriptions for month:** $178045.71

- **Gross Redemptions for month:** $326336.17

### Class: Unknown Class (—)

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

- **B.3 - Net Assets of Class:** $17248245.13

- **B.4 - Shares Outstanding:** 17248300.44

- **B.7.7 - 7-Day Net Yield:** 3.6200%

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

- **Expense Reimbursement/Waiver Description:** New York Life Investment Management, LLC, Expense Waiver, 1162.21;

**Weekly Flows:**

| Period   | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| Week 1   | $353230.63                | $135358.42              |
| Week 2   | $217963.50                | $512622.24              |
| Week 3   | $49849.18                 | $329157.98              |
| Week 4   | $197316.75                | $253547.09              |

**Monthly Shareholder Flow Activity:**

- **Gross Subscriptions for month:** $840010.95

- **Gross Redemptions for month:** $1258943.27

### Class: Unknown Class (—)

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

- **B.3 - Net Assets of Class:** $18782574.84

- **B.4 - Shares Outstanding:** 18792386.34

- **B.7.7 - 7-Day Net Yield:** 3.6200%

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

- **Expense Reimbursement/Waiver Description:** New York Life Investment Management, LLC, Expense Waiver, 1246.47;

**Weekly Flows:**

| Period   | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| Week 1   | $187863.10                | $164411.88              |
| Week 2   | $223083.44                | $205674.16              |
| Week 3   | $127930.56                | $189887.74              |
| Week 4   | $145494.60                | $119189.11              |

**Monthly Shareholder Flow Activity:**

- **Gross Subscriptions for month:** $796306.41

- **Gross Redemptions for month:** $784069.80

### Class: Unknown Class (—)

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

- **B.3 - Net Assets of Class:** $157426.97

- **B.4 - Shares Outstanding:** 157427.89

- **B.7.7 - 7-Day Net Yield:** 3.6400%

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

**Weekly Flows:**

| Period   | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| Week 1   | $36715.42                 | $2000.00                |
| Week 2   | $293.86                   | $0.00                   |
| Week 4   | $31866.08                 | $0.00                   |

**Monthly Shareholder Flow Activity:**

- **Gross Subscriptions for month:** $68875.36

- **Gross Redemptions for month:** $2000.00

## Part C: Schedule of Portfolio Securities

### Security 1: Alabama Power Co.

- **C.1 - Title:** Alabama Power Co. 4.422
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 01039MP32, C.4 - ISIN: US01039MP323, C.3 - LEI: 0RL818ELFOHP5JHOFU19
- **C.18 - Value (incl. sponsor support):** $19992678.40
- **C.18.a - Value (excl. sponsor support):** $19992678.40
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.4200%
- **C.11 - Maturity Date (WAM):** 2023-02-03
- **C.12 - Maturity Date (WAL):** 2023-02-03
- **C.13 - Final Legal Maturity Date:** 2023-02-03
- **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 2: American Transmission Co. LLC

- **C.1 - Title:** American Transmission Co. LLC 4.394
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 03028UP82, C.4 - ISIN: US03028UP822
- **C.18 - Value (incl. sponsor support):** $19980124.40
- **C.18.a - Value (excl. sponsor support):** $19980124.40
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.3900%
- **C.11 - Maturity Date (WAM):** 2023-02-08
- **C.12 - Maturity Date (WAL):** 2023-02-08
- **C.13 - Final Legal Maturity Date:** 2023-02-08
- **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: Apple, Inc.

- **C.1 - Title:** Apple, Inc. 4.324
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 03785EP81, C.4 - ISIN: US03785EP813, C.3 - LEI: HWUPKR0MPOU8FGXBT394
- **C.18 - Value (incl. sponsor support):** $19980124.40
- **C.18.a - Value (excl. sponsor support):** $19980124.40
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.3200%
- **C.11 - Maturity Date (WAM):** 2023-02-08
- **C.12 - Maturity Date (WAL):** 2023-02-08
- **C.13 - Final Legal Maturity Date:** 2023-02-08
- **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 4: Archer-Daniels-Midland Co.

- **C.1 - Title:** Archer-Daniels-Midland Co. 4.293
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 03948HP62, C.4 - ISIN: US03948HP620, C.3 - LEI: 549300LO13MQ9HYSTR83
- **C.18 - Value (incl. sponsor support):** $19985246.60
- **C.18.a - Value (excl. sponsor support):** $19985246.60
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.2900%
- **C.11 - Maturity Date (WAM):** 2023-02-06
- **C.12 - Maturity Date (WAL):** 2023-02-06
- **C.13 - Final Legal Maturity Date:** 2023-02-06
- **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 5: Canadian National Railway Co.

- **C.1 - Title:** Canadian National Railway Co. 4.489
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 13639DPG2, C.4 - ISIN: US13639DPG24, C.3 - LEI: 3SU7BEP7TH9YEQOZCS77
- **C.18 - Value (incl. sponsor support):** $19960124.40
- **C.18.a - Value (excl. sponsor support):** $19960124.40
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1200%
- **C.17 - Yield as of Reporting Date:** 4.4900%
- **C.11 - Maturity Date (WAM):** 2023-02-16
- **C.12 - Maturity Date (WAL):** 2023-02-16
- **C.13 - Final Legal Maturity Date:** 2023-02-16
- **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:** CANADIAN NATL RA

- **Amount Provided:** 1.0000

### Security 6: Caterpillar Financial Services Corp.

- **C.1 - Title:** Caterpillar Financial Services Corp. 4.304
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 14912EP76, C.4 - ISIN: US14912EP760, C.3 - LEI: EDBQKYOPJUCJKLOJDE72
- **C.18 - Value (incl. sponsor support):** $19982694.40
- **C.18.a - Value (excl. sponsor support):** $19982694.40
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.3000%
- **C.11 - Maturity Date (WAM):** 2023-02-07
- **C.12 - Maturity Date (WAL):** 2023-02-07
- **C.13 - Final Legal Maturity Date:** 2023-02-07
- **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:** CATERPILLAR INC

- **Amount Provided:** 1.0000

### Security 7: Colgate-Palmolive Co.

- **C.1 - Title:** Colgate-Palmolive Co. 4.294
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 19416FP73, C.4 - ISIN: US19416FP731, C.3 - LEI: YMEGZFW4SBUSS5BQXF88
- **C.18 - Value (incl. sponsor support):** $19982733.40
- **C.18.a - Value (excl. sponsor support):** $19982733.40
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.2900%
- **C.11 - Maturity Date (WAM):** 2023-02-07
- **C.12 - Maturity Date (WAL):** 2023-02-07
- **C.13 - Final Legal Maturity Date:** 2023-02-07
- **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 8: Cummins, Inc.

- **C.1 - Title:** Cummins, Inc. 4.585
- **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):** $19891233.80
- **C.18.a - Value (excl. sponsor support):** $19891233.80
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1100%
- **C.17 - Yield as of Reporting Date:** 4.5900%
- **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 9: Emerson Electric Co.

- **C.1 - Title:** Emerson Electric Co. 4.384
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 29101BP71, C.4 - ISIN: US29101BP710, C.3 - LEI: FGLT0EWZSUIRRITFOA30
- **C.18 - Value (incl. sponsor support):** $19982694.40
- **C.18.a - Value (excl. sponsor support):** $19982694.40
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.3800%
- **C.11 - Maturity Date (WAM):** 2023-02-07
- **C.12 - Maturity Date (WAL):** 2023-02-07
- **C.13 - Final Legal Maturity Date:** 2023-02-07
- **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 10: Hershey Co. (The)

- **C.1 - Title:** Hershey Co. (The) 4.303
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 42786UP66, C.4 - ISIN: US42786UP661, C.3 - LEI: 21X2CX66SU2BR6QTAD08
- **C.18 - Value (incl. sponsor support):** $19985246.60
- **C.18.a - Value (excl. sponsor support):** $19985246.60
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.3000%
- **C.11 - Maturity Date (WAM):** 2023-02-06
- **C.12 - Maturity Date (WAL):** 2023-02-06
- **C.13 - Final Legal Maturity Date:** 2023-02-06
- **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 11: John Deere Canada ULC

- **C.1 - Title:** John Deere Canada ULC 4.271
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 24423JP27, C.4 - ISIN: US24423JP278, C.3 - LEI: 54930034SQM5911PYS66
- **C.18 - Value (incl. sponsor support):** $19995190.00
- **C.18.a - Value (excl. sponsor support):** $19995190.00
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.2700%
- **C.11 - Maturity Date (WAM):** 2023-02-02
- **C.12 - Maturity Date (WAL):** 2023-02-02
- **C.13 - Final Legal Maturity Date:** 2023-02-02
- **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 12: National Rural Utilities Cooperative Finance Corp.

- **C.1 - Title:** National Rural Utilities Cooperative Finance Corp. 4.762
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 63743DPM7, C.4 - ISIN: US63743DPM73, C.3 - LEI: 4NYF266XZC35SCTGX023
- **C.18 - Value (incl. sponsor support):** $19947570.00
- **C.18.a - Value (excl. sponsor support):** $19947570.00
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1200%
- **C.17 - Yield as of Reporting Date:** 4.7600%
- **C.11 - Maturity Date (WAM):** 2023-02-21
- **C.12 - Maturity Date (WAL):** 2023-02-21
- **C.13 - Final Legal Maturity Date:** 2023-02-21
- **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 13: Nestle Finance International Ltd.

- **C.1 - Title:** Nestle Finance International Ltd. 4.304
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 64106HP70, C.4 - ISIN: US64106HP704, C.3 - LEI: 0KLLMNHINTFDRMU6DI05
- **C.18 - Value (incl. sponsor support):** $19983005.60
- **C.18.a - Value (excl. sponsor support):** $19983005.60
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.3000%
- **C.11 - Maturity Date (WAM):** 2023-02-07
- **C.12 - Maturity Date (WAL):** 2023-02-07
- **C.13 - Final Legal Maturity Date:** 2023-02-07
- **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 14: PACCAR Financial Corp.

- **C.1 - Title:** PACCAR Financial Corp. 4.281
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 69372BP20, C.4 - ISIN: US69372BP205, C.3 - LEI: PH3S12DWZBHHQKVYZ297
- **C.18 - Value (incl. sponsor support):** $19995176.60
- **C.18.a - Value (excl. sponsor support):** $19995176.60
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.2800%
- **C.11 - Maturity Date (WAM):** 2023-02-02
- **C.12 - Maturity Date (WAL):** 2023-02-02
- **C.13 - Final Legal Maturity Date:** 2023-02-02
- **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:** PACCAR INC

- **Amount Provided:** 1.0000

### Security 15: Procter & Gamble Co. (The)

- **C.1 - Title:** Procter & Gamble Co. (The) 4.304
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 74271UP87, C.4 - ISIN: US74271UP871, C.3 - LEI: 2572IBTT8CCZW6AU4141
- **C.18 - Value (incl. sponsor support):** $19980257.80
- **C.18.a - Value (excl. sponsor support):** $19980257.80
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.3000%
- **C.11 - Maturity Date (WAM):** 2023-02-08
- **C.12 - Maturity Date (WAL):** 2023-02-08
- **C.13 - Final Legal Maturity Date:** 2023-02-08
- **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 16: Rockwell Automation, Inc.

- **C.1 - Title:** Rockwell Automation, Inc. 4.394
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 7743E3P83, C.4 - ISIN: US7743E3P830, C.3 - LEI: VH3R4HHBHH12O0EXZJ88
- **C.18 - Value (incl. sponsor support):** $19979813.40
- **C.18.a - Value (excl. sponsor support):** $19979813.40
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.3900%
- **C.11 - Maturity Date (WAM):** 2023-02-08
- **C.12 - Maturity Date (WAL):** 2023-02-08
- **C.13 - Final Legal Maturity Date:** 2023-02-08
- **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 17: Stanley Black & Decker, Inc.

- **C.1 - Title:** Stanley Black & Decker, Inc. 4.578
- **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):** $19920846.60
- **C.18.a - Value (excl. sponsor support):** $19920846.60
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1200%
- **C.17 - Yield as of Reporting Date:** 4.5800%
- **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? No, C.23 Categorized at Level 3? No

### Security 18: TotalEnergies Capital Canada Ltd.

- **C.1 - Title:** TotalEnergies Capital Canada Ltd. 4.332
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 89153QP38, C.4 - ISIN: US89153QP385, C.3 - LEI: 5299005IX98ZZ9LSGK46
- **C.18 - Value (incl. sponsor support):** $19992738.40
- **C.18.a - Value (excl. sponsor support):** $19992738.40
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.3300%
- **C.11 - Maturity Date (WAM):** 2023-02-03
- **C.12 - Maturity Date (WAL):** 2023-02-03
- **C.13 - Final Legal Maturity Date:** 2023-02-03
- **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 19: Wisconsin Public Service Corp.

- **C.1 - Title:** Wisconsin Public Service Corp. 4.451
- **C.6 - Investment Category:** Non-Financial Company Commercial Paper
- **Identifiers:** C.3 - CUSIP: 97684HP13, C.4 - ISIN: US97684HP131, C.3 - LEI: 549300BJRHJVYNUMQZ30
- **C.18 - Value (incl. sponsor support):** $19997546.60
- **C.18.a - Value (excl. sponsor support):** $19997546.60
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 4.1300%
- **C.17 - Yield as of Reporting Date:** 4.4500%
- **C.11 - Maturity Date (WAM):** 2023-02-01
- **C.12 - Maturity Date (WAL):** 2023-02-01
- **C.13 - Final Legal Maturity Date:** 2023-02-01
- **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 20: U.S. Treasury Bills

- **C.1 - Title:** U.S. Treasury Bills 4.471
- **C.6 - Investment Category:** U.S. Treasury Debt
- **Identifiers:** C.3 - CUSIP: 912796Y78, C.4 - ISIN: US912796Y783, C.3 - LEI: 254900HROIFWPRGM1V77
- **C.18 - Value (incl. sponsor support):** $35879985.00
- **C.18.a - Value (excl. sponsor support):** $35879985.00
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 7.4100%
- **C.17 - Yield as of Reporting Date:** 4.4700%
- **C.11 - Maturity Date (WAM):** 2023-02-28
- **C.12 - Maturity Date (WAL):** 2023-02-28
- **C.13 - Final Legal Maturity Date:** 2023-02-28
- **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 21: U.S. Treasury Bills

- **C.1 - Title:** U.S. Treasury Bills 4.350
- **C.6 - Investment Category:** U.S. Treasury Debt
- **Identifiers:** C.3 - CUSIP: 912796ZU6, C.4 - ISIN: US912796ZU66, C.3 - LEI: 254900HROIFWPRGM1V77
- **C.18 - Value (incl. sponsor support):** $38939617.86
- **C.18.a - Value (excl. sponsor support):** $38939617.86
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 8.0400%
- **C.17 - Yield as of Reporting Date:** 4.3500%
- **C.11 - Maturity Date (WAM):** 2023-02-14
- **C.12 - Maturity Date (WAL):** 2023-02-14
- **C.13 - Final Legal Maturity Date:** 2023-02-14
- **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: RBC Capital Markets LLC

- **C.1 - Title:** RBC Capital Markets LLC 4.27
- **C.6 - Investment Category:** U.S. Treasury Repurchase Agreement, if collateralized only by U.S. Treasuries (including Strips) and cash
- **Identifiers:** C.3 - CUSIP: ZS1HZZN, C.3 - LEI: 549300LCO2FLSSVFFR64, CIK: 0000895502
- **C.18 - Value (incl. sponsor support):** $6111000.00
- **C.18.a - Value (excl. sponsor support):** $6111000.00
- **Principal Amount:** —
- **Amortized Cost:** —
- **Fair Value:** —
- **C.19 - Percentage of Net Assets:** 1.2600%
- **C.17 - Yield as of Reporting Date:** 4.2700%
- **C.11 - Maturity Date (WAM):** 2023-02-01
- **C.12 - Maturity Date (WAL):** 2023-02-01
- **C.13 - Final Legal Maturity Date:** 2023-02-01
- **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 23: TD Securities, Inc.

- **C.1 - Title:** TD Securities, Inc. 4.29
- **C.6 - Investment Category:** U.S. Treasury Repurchase Agreement, if collateralized only by U.S. Treasuries (including Strips) and cash
- **Identifiers:** C.3 - CUSIP: ZS1HZZP, 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:** 5.1600%
- **C.17 - Yield as of Reporting Date:** 4.2900%
- **C.11 - Maturity Date (WAM):** 2023-02-01
- **C.12 - Maturity Date (WAL):** 2023-02-01
- **C.13 - Final Legal Maturity Date:** 2023-02-01
- **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:** 2023-02-03

**By:** /s/Jack Benintende

**Name of Signing Officer:** Jack Benintende

**Title of Signing Officer:** Treasurer