# EDGAR Filing Document

**Accession Number:** 0000787441
**File Stem:** 0001104659-23-007209
**Filing Date:** 2023-1
**Character Count:** 16519
**Document Hash:** 143f278c142eaac0e3c767cc9bd918c7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-23-007209.hdr.sgml**: 20230127

**ACCESSION NUMBER**: 0001104659-23-007209

**CONFORMED SUBMISSION TYPE**: 24F-2NT

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20221031

**FILED AS OF DATE**: 20230127

**DATE AS OF CHANGE**: 20230127

**EFFECTIVENESS DATE**: 20230127

**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:** 24F-2NT
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-02610
- **FILM NUMBER:** 23559586

**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 MacKay Strategic Bond Fund (Series ID: S000006894)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| Class A        | MASAX         | C000018685 |
| Class B        | MASBX         | C000018686 |
| Class C        | MSICX         | C000018687 |
| Class I        | MSDIX         | C000018688 |
| INVESTOR CLASS | MSYDX         | C000060790 |
| Class R2       | MSIRX         | C000138226 |
| Class R3       | MSDJX         | C000166834 |
| Class R6       | MSYEX         | C000185554 |
| SIMPLE CLASS   | nan           | C000221689 |

---

### MainStay MacKay U.S. Infrastructure Bond Fund (Series ID: S000006895)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| Class A        | MGVAX         | C000018689 |
| Class B        | MCSGX         | C000018690 |
| Class C        | MGVCX         | C000018691 |
| Class I        | MGOIX         | C000018692 |
| INVESTOR CLASS | MGVNX         | C000060791 |
| Class R6       | MGVDX         | C000185556 |
| SIMPLE CLASS   | nan           | C000221690 |

---

### MainStay MacKay High Yield Corporate Bond Fund (Series ID: S000006896)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| Class A        | MHCAX         | C000018693 |
| Class B        | MKHCX         | C000018694 |
| Class C        | MYHCX         | C000018695 |
| Class I        | MHYIX         | C000018696 |
| Class R2       | MHYRX         | C000057099 |
| INVESTOR CLASS | MHHIX         | C000060792 |
| Class R1       | MHHRX         | C000116272 |
| Class R6       | MHYSX         | C000127160 |
| Class R3       | MHYTX         | C000166835 |
| SIMPLE CLASS   | MHHSX         | C000221691 |

---

### MainStay Money Market Fund (Series ID: S000006897)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| Class A        | MMAXX         | C000018697 |
| Class B        | MKMXX         | C000018698 |
| Class C        | MSCXX         | C000018699 |
| INVESTOR CLASS | MKTXX         | C000060793 |
| Class R6       | nan           | C000218293 |
| SIMPLE CLASS   | MIPXX         | C000221692 |

---

### MainStay MacKay Tax Free Bond Fund (Series ID: S000006898)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| Class A        | MTBAX         | C000018700 |
| Class B        | MKTBX         | C000018701 |
| Class C        | MTFCX         | C000018702 |
| INVESTOR CLASS | MKINX         | C000060794 |
| Class I        | MTBIX         | C000082082 |
| Class R6       | MTBDX         | C000185560 |
| Class C2       | MTSPX         | C000221693 |
| SIMPLE CLASS   | nan           | C000221694 |

---

### MainStay MacKay Convertible Fund (Series ID: S000006899)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| Class A        | MCOAX         | C000018703 |
| Class B        | MCSVX         | C000018704 |
| Class C        | MCCVX         | C000018705 |
| INVESTOR CLASS | MCINX         | C000060795 |
| Class I        | MCNVX         | C000087595 |
| Class R6       | MCNDX         | C000185563 |
| SIMPLE CLASS   | nan           | C000221695 |

---

### MainStay Income Builder Fund (Series ID: S000006900)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| Class A        | MTRAX         | C000018706 |
| Class B        | MKTRX         | C000018707 |
| Class C        | MCTRX         | C000018708 |
| Class I        | MTOIX         | C000018709 |
| INVESTOR CLASS | MTINX         | C000060796 |
| Class R2       | MTXRX         | C000153007 |
| Class R3       | MTXVX         | C000166836 |
| Class R6       | MTODX         | C000185564 |
| SIMPLE CLASS   | MTISX         | C000221696 |

---

### MainStay Candriam Emerging Markets Debt Fund (Series ID: S000006901)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| Class A        | MGHAX         | C000018710 |
| Class B        | MGHBX         | C000018711 |
| Class C        | MHYCX         | C000018712 |
| Class I        | MGHIX         | C000052120 |
| INVESTOR CLASS | MGHHX         | C000060797 |
| Class R6       | MGHDX         | C000185566 |
| SIMPLE CLASS   | nan           | C000221697 |

---

### MainStay MacKay International Equity Fund (Series ID: S000006902)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| Class A        | MSEAX         | C000018713 |
| Class B        | MINEX         | C000018714 |
| Class C        | MIECX         | C000018715 |
| Class I        | MSIIX         | C000018716 |
| Class R1       | MIERX         | C000018717 |
| Class R2       | MIRRX         | C000018718 |
| Class R3       | MIFRX         | C000030957 |
| INVESTOR CLASS | MINNX         | C000060798 |
| Class R6       | MIFDX         | C000185568 |
| SIMPLE CLASS   | nan           | C000221698 |

---

### MainStay WMC Enduring Capital Fund (Series ID: S000006903)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| Class A        | MSOAX         | C000018719 |
| Class B        | MOPBX         | C000018720 |
| Class C        | MGOCX         | C000018721 |
| Class I        | MSOIX         | C000018722 |
| Class R2       | MSORX         | C000057100 |
| INVESTOR CLASS | MCSSX         | C000060799 |
| Class R3       | MSOSX         | C000166837 |
| Class R6       | MCSDX         | C000179143 |
| SIMPLE CLASS   | nan           | C000221699 |

---

### MainStay Winslow Large Cap Growth Fund (Series ID: S000006905)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| Class A        | MLAAX         | C000018724 |
| Class B        | MLABX         | C000018725 |
| Class C        | MLACX         | C000018726 |
| Class I        | MLAIX         | C000018727 |
| Class R1       | MLRRX         | C000018728 |
| Class R2       | MLRTX         | C000018729 |
| Class R3       | MLGRX         | C000030958 |
| INVESTOR CLASS | MLINX         | C000060800 |
| Class R6       | MLRSX         | C000127162 |
| SIMPLE CLASS   | MLRMX         | C000221700 |

---

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

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| Class A        | MAPAX         | C000018730 |
| Class B        | MAPBX         | C000018731 |
| Class C        | MMPCX         | C000018732 |
| Class I        | MUBFX         | C000018733 |
| Class R1       | MAPRX         | C000018734 |
| Class R2       | MPRRX         | C000018735 |
| Class R3       | MMAPX         | C000030959 |
| INVESTOR CLASS | MSMIX         | C000060801 |
| Class R6       | MMPDX         | C000185571 |
| SIMPLE CLASS   | nan           | C000221701 |

---

## Series and Classes Contracts Data

### MainStay MacKay Strategic Bond Fund (Series ID: S000006894)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000018685 | Class A        | MASAX           |
| C000018686 | Class B        | MASBX           |
| C000018687 | Class C        | MSICX           |
| C000018688 | Class I        | MSDIX           |
| C000060790 | INVESTOR CLASS | MSYDX           |
| C000138226 | Class R2       | MSIRX           |
| C000166834 | Class R3       | MSDJX           |
| C000185554 | Class R6       | MSYEX           |
| C000221689 | SIMPLE CLASS   |  |

### MainStay MacKay U.S. Infrastructure Bond Fund (Series ID: S000006895)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000018689 | Class A        | MGVAX           |
| C000018690 | Class B        | MCSGX           |
| C000018691 | Class C        | MGVCX           |
| C000018692 | Class I        | MGOIX           |
| C000060791 | INVESTOR CLASS | MGVNX           |
| C000185556 | Class R6       | MGVDX           |
| C000221690 | SIMPLE CLASS   |  |

### MainStay MacKay High Yield Corporate Bond Fund (Series ID: S000006896)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000018693 | Class A        | MHCAX           |
| C000018694 | Class B        | MKHCX           |
| C000018695 | Class C        | MYHCX           |
| C000018696 | Class I        | MHYIX           |
| C000057099 | Class R2       | MHYRX           |
| C000060792 | INVESTOR CLASS | MHHIX           |
| C000116272 | Class R1       | MHHRX           |
| C000127160 | Class R6       | MHYSX           |
| C000166835 | Class R3       | MHYTX           |
| C000221691 | SIMPLE CLASS   | MHHSX           |

### 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           |
| C000218293 | Class R6       |  |
| C000221692 | SIMPLE CLASS   | MIPXX           |

### MainStay MacKay Tax Free Bond Fund (Series ID: S000006898)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000018700 | Class A        | MTBAX           |
| C000018701 | Class B        | MKTBX           |
| C000018702 | Class C        | MTFCX           |
| C000060794 | INVESTOR CLASS | MKINX           |
| C000082082 | Class I        | MTBIX           |
| C000185560 | Class R6       | MTBDX           |
| C000221693 | Class C2       | MTSPX           |
| C000221694 | SIMPLE CLASS   |  |

### MainStay MacKay Convertible Fund (Series ID: S000006899)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000018703 | Class A        | MCOAX           |
| C000018704 | Class B        | MCSVX           |
| C000018705 | Class C        | MCCVX           |
| C000060795 | INVESTOR CLASS | MCINX           |
| C000087595 | Class I        | MCNVX           |
| C000185563 | Class R6       | MCNDX           |
| C000221695 | SIMPLE CLASS   |  |

### MainStay Income Builder Fund (Series ID: S000006900)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000018706 | Class A        | MTRAX           |
| C000018707 | Class B        | MKTRX           |
| C000018708 | Class C        | MCTRX           |
| C000018709 | Class I        | MTOIX           |
| C000060796 | INVESTOR CLASS | MTINX           |
| C000153007 | Class R2       | MTXRX           |
| C000166836 | Class R3       | MTXVX           |
| C000185564 | Class R6       | MTODX           |
| C000221696 | SIMPLE CLASS   | MTISX           |

### MainStay Candriam Emerging Markets Debt Fund (Series ID: S000006901)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000018710 | Class A        | MGHAX           |
| C000018711 | Class B        | MGHBX           |
| C000018712 | Class C        | MHYCX           |
| C000052120 | Class I        | MGHIX           |
| C000060797 | INVESTOR CLASS | MGHHX           |
| C000185566 | Class R6       | MGHDX           |
| C000221697 | SIMPLE CLASS   |  |

### MainStay MacKay International Equity Fund (Series ID: S000006902)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000018713 | Class A        | MSEAX           |
| C000018714 | Class B        | MINEX           |
| C000018715 | Class C        | MIECX           |
| C000018716 | Class I        | MSIIX           |
| C000018717 | Class R1       | MIERX           |
| C000018718 | Class R2       | MIRRX           |
| C000030957 | Class R3       | MIFRX           |
| C000060798 | INVESTOR CLASS | MINNX           |
| C000185568 | Class R6       | MIFDX           |
| C000221698 | SIMPLE CLASS   |  |

### MainStay WMC Enduring Capital Fund (Series ID: S000006903)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000018719 | Class A        | MSOAX           |
| C000018720 | Class B        | MOPBX           |
| C000018721 | Class C        | MGOCX           |
| C000018722 | Class I        | MSOIX           |
| C000057100 | Class R2       | MSORX           |
| C000060799 | INVESTOR CLASS | MCSSX           |
| C000166837 | Class R3       | MSOSX           |
| C000179143 | Class R6       | MCSDX           |
| C000221699 | SIMPLE CLASS   |  |

### MainStay Winslow Large Cap Growth Fund (Series ID: S000006905)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000018724 | Class A        | MLAAX           |
| C000018725 | Class B        | MLABX           |
| C000018726 | Class C        | MLACX           |
| C000018727 | Class I        | MLAIX           |
| C000018728 | Class R1       | MLRRX           |
| C000018729 | Class R2       | MLRTX           |
| C000030958 | Class R3       | MLGRX           |
| C000060800 | INVESTOR CLASS | MLINX           |
| C000127162 | Class R6       | MLRSX           |
| C000221700 | SIMPLE CLASS   | MLRMX           |

### 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           |
| C000221701 | SIMPLE CLASS   |  |

## FORM 24F-2NT: Annual Notice of Securities Sold Pursuant to Rule 24f-2

### 24F-2NT: Filer Information

**Filer CIK:** 0000787441

**Is this a LIVE or TEST Filing?:** LIVE

**Filer Investment Company Type:** N-1A

### 24F-2NT: Annual Filing Information

**1. Name and address of issuer:**

- **Name of Issuer:** MainStay Funds

- **Address:** 51 Madison Avenue, New York, NY 10010

**2. The Name and EDGAR Identifier of each series or class of securities for which this Form is filed:**

- [ ] Check box if the Form is being filed for all series and classes of the issuer.

**3. Investment Company Act File Number:** 811-04550

   **Securities Act File Number:** 033-02610

**4(a). Last day of fiscal year for which this Form is filed:** 10/31/2022

**4(b). Check box if this Form is being filed late:** [ ]

**4(c). Check box if this is the last time the issuer will be filing this Form:** [ ]

**5. Calculation of registration fee:**

- **(i) Aggregate sale price of securities sold during the fiscal year:** $19617877748.00

- **(ii) Aggregate price of securities redeemed or repurchased during the fiscal year:** $16660942257.00

- **(iii) Aggregate price of securities redeemed or repurchased during any prior fiscal year:** $0.00

- **(iv) Total available redemption credits [add Items 5(ii) and 5(iii)]:** $16660942257.00

- **(v) Net sales:** $2956935491.00

- **(vi) Redemption credits available for use in future years:** $0.00

- **(vii) Multiplier for determining registration fee:** 0.000110200

- **(viii) Registration fee due:** $325854.29

- **7. Interest due -- if this Form is being filed more than 90 days after the end of the issuer's fiscal year:** $0.00

- **8. Total of the amount of the registration fee due plus any interest due:** $325854.29

**Signatures**

**Name and Title:** Jack R. Benintende, Treasurer and Principal Financial and Accounting Officer

**Date:** 01/27/2023

**Signature:** /s/ Jack R. Benintende