MLAAX / Mainstay Funds - MainStay Winslow Large Cap Growth Fund USD Cls A - Arquivamentos da SEC, Relatório Anual, Declaração de Procuração

Mainstay Funds - MainStay Winslow Large Cap Growth Fund USD Cls A
US ˙ MUTF

Estatísticas Básicas
LEI 549300M3WRI6CMX2WP65
CIK 787441
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Mainstay Funds - MainStay Winslow Large Cap Growth Fund USD Cls A
SEC Filings (Chronological Order)
Esta página fornece uma lista completa e cronológica de Arquivamentos da SEC, excluindo os arquivamentos de propriedade que fornecemos em outro lugar.
October 17, 2025 DEF 14A

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

NEW YORK LIFE INVESTMENTS FUNDS SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Under Rule 14a-12 NEW YORK LIFE INVESTMENTS FUNDS (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): ☒ No fee required.

October 7, 2025 N-MFP3

N-MFP3

N-MFP3 0000787441 XXXXXXXX 2025-09-30 NEW YORK LIFE INVESTMENTS FUNDS 0000787441 549300PAI7XEJSNBJ671 NYLI Money Market Fund 5493000843752EBAT481 S000006897 5 N N 033-02610 New York Life Investment Management LLC 801-57396 NYL Investors LLC 801-78759 KPMG LLP Philadelphia PA New York Life Investment Management LLC NYLIM Service Company LLC 0001103598 084-05844 N N N Prime Y 19 24 362495384.

September 19, 2025 POS EX

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON SEPTEMBER 19, 2025

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON SEPTEMBER 19, 2025 FILE NO.

September 19, 2025 EX-99.B BYLAWS

BY-LAWS NEW YORK LIFE INVESTMENTS FUNDS Dated December 31, 1994 Amended and Restated June 24, 2020 Amended and Restated August 28, 2024 TABLE OF CONTENTS Page

BY-LAWS OF NEW YORK LIFE INVESTMENTS FUNDS Dated December 31, 1994 Amended and Restated June 24, 2020 Amended and Restated August 28, 2024 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS 1 ARTICLE II OFFICES 1 Section 1.

September 19, 2025 EX-99.P CODE ETH

New York Life Investments Code of Ethics December 2024

New York Life Investments Code of Ethics December 2024 SECTION 1 GENERAL FIDUCIARY PRINCIPLES As fiduciaries to our clients’ assets, New York Life Investments1 and its employees have a duty to act in good faith and in the best interest of its clients.

September 19, 2025 EX-99.M 12B-1 PLAN

PLAN OF DISTRIBUTION PURSUANT TO RULE 12b-1 FOR CLASS C2 SHARES OF MAINSTAY FUNDS TRUST THE MAINSTAY FUNDS

Exhibit (m)(8) PLAN OF DISTRIBUTION PURSUANT TO RULE 12b-1 FOR CLASS C2 SHARES OF MAINSTAY FUNDS TRUST THE MAINSTAY FUNDS WHEREAS, MainStay Funds Trust and The MainStay Funds (each, a “Trust”) each engage in business as an open-end management investment company and is registered as such under the Investment Company Act of 1940, as amended (the “Act”); WHEREAS, shares of beneficial interest of each

September 19, 2025 EX-99.D ADVSR CONTR

THE MAINSTAY FUNDS AMENDED AND RESTATED SUBADVISORY AGREEMENT

THE MAINSTAY FUNDS AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amended and Restated Subadvisory Agreement is effective as of the 1st day of July, 2022 (the “Agreement”), between New York Life Investment Management LLC, a Delaware limited liability company (the “Manager”) and Candriam, a partnership limited by shares organized under the laws of Luxembourg (the “Subadvisor” or “Candriam”).

September 19, 2025 EX-99.H OTH MAT CONT

SCHEDULE A

AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT THIS AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT, is hereby made as of August 28, 2025, between New York Life Investments Funds and New York Life Investments Funds Trust (each a “Trust” and collectively, the “Trusts”), on behalf of each series of the Trusts as set forth on Schedule A (each a “Fund” and collectively, “Funds”), and New York Life Investment Management LLC (the “Manager”) (“Agreement”).

September 19, 2025 EX-99.A CHARTER

NEW YORK LIFE INVESTMENTS FUNDS DECLARATION OF TRUST DATED JANUARY 9, 1986 AS AMENDED AND RESTATED AUGUST 30, 1991 AS AMENDED AND RESTATED DECEMBER 31, 1994 AS AMENDED AND RESTATED June 4, 2015 AS AMENDED AND RESTATED August 19, 2016 AS AMENDED AND R

NEW YORK LIFE INVESTMENTS FUNDS DECLARATION OF TRUST DATED JANUARY 9, 1986 AS AMENDED AND RESTATED AUGUST 30, 1991 AS AMENDED AND RESTATED DECEMBER 31, 1994 AS AMENDED AND RESTATED June 4, 2015 AS AMENDED AND RESTATED August 19, 2016 AS AMENDED AND RESTATED August 28, 2024 ARTICLE I.

September 19, 2025 EX-99.P CODE ETH

October 2024 CANDRIAMO A NEW YORK LIFE INVESTMENTS COMPANY Code of Ethics Candriam

October 2024 CANDRIAMO A NEW YORK LIFE INVESTMENTS COMPANY Code of Ethics Candriam Code of Ethics Status: FINAL Document Type: Policy Version: V 3 Issuing Date: 07/06/2015 General Information Process Owner: Compl Responsible (Policy owner) Business Unit Contact / Backup Department Head of Conduct & Compliance Advisory Compliance Other Contributor(s) Department(s) Senior Compliance Officer [Complin

September 19, 2025 EX-99.H OTH MAT CONT

AMENDMENT TO AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT

AMENDMENT TO AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT This Amendment to the Amended and Restated Transfer Agency and Service Agreement (“Amendment”) is effective as of the 1st day of July, 2025, by and among New York Life Investments Funds, a Massachusetts business trust, and New York Life Investments VP Funds Trust and New York Life Investments Funds Trust, each a Delaware statutory trust (each, a “Fund” and collectively, the “Funds”), and NYLIM Service Company LLC (“NSC”), a Delaware limited liability company, having its principal office and place of business at 30 Hudson Street, Jersey City, New Jersey 07302.

September 19, 2025 EX-99.P CODE ETH

Epoch Investment Partners, Inc. Code of Ethics and Business Conduct OCTOBER 2024

Epoch Investment Partners, Inc. Code of Ethics and Business Conduct OCTOBER 2024 TD Epoch Code of Ethics and Business Conduct – October 2024 Table of Contents 1.   Statement of General Principles 4 2.   Definition of Terms Used 5 3.   Compliance with Laws, Rules and Regulations 6 Retaliation Prohibited 7 4.   Compliance with Disclosure Controls and Dealing with External Auditors 7 5.   Conflicts o

September 8, 2025 N-MFP3

N-MFP3

N-MFP3 0000787441 XXXXXXXX 2025-08-31 NEW YORK LIFE INVESTMENTS FUNDS 0000787441 549300PAI7XEJSNBJ671 NYLI Money Market Fund 5493000843752EBAT481 S000006897 5 N N 033-02610 New York Life Investment Management LLC 801-57396 NYL Investors LLC 801-78759 KPMG LLP Philadelphia PA New York Life Investment Management LLC NYLIM Service Company LLC 0001103598 084-05844 N N N Prime Y 14 21 376251690.

July 17, 2025 CORRESP

NEW YORK LIFE INVESTMENTS FUNDS NEW YORK LIFE INVESTMENTS FUNDS TRUST NEW YORK LIFE INVESTMENTS VP FUNDS TRUST 51 Madison Avenue New York, NY 10010

NEW YORK LIFE INVESTMENTS FUNDS NEW YORK LIFE INVESTMENTS FUNDS TRUST NEW YORK LIFE INVESTMENTS VP FUNDS TRUST 51 Madison Avenue New York, NY 10010 July 17, 2025 VIA EDGAR Ms.

May 29, 2025 CORRESP

NEW YORK LIFE INVESTMENTS FUNDS NEW YORK LIFE INVESTMENTS FUNDS TRUST NEW YORK LIFE INVESTMENTS VP FUNDS TRUST 51 Madison Avenue New York, NY 10010

NEW YORK LIFE INVESTMENTS FUNDS NEW YORK LIFE INVESTMENTS FUNDS TRUST NEW YORK LIFE INVESTMENTS VP FUNDS TRUST 51 Madison Avenue New York, NY 10010 May 29, 2025 VIA EDGAR Ms.

October 25, 2023 EX-99.H OTH MAT CONT

AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT

AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT THIS AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT, is hereby made as of July 24, 2023, between The MainStay Funds and MainStay Funds Trust (each a “Trust” and together, the “Trusts”), on behalf of each series of the Trusts as currently in existence and any future share classes of such series, any future series of the Trusts (each a “Fund” and collectively, the “Funds”), and New York Life Investment Management LLC (the “Manager”) (“Agreement”).

October 25, 2023 EX-99.D ADVSR CONTR

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amendment to the Amended and Restated Subadvisory Agreement, is made as of the 28th day of February 2022, between New York Life Investment Management LLC, a Delaware limited liability company (the “Manager”) and MacKay Shields LLC, a Delaware limited liability company (the “Subadvisor”).

October 25, 2023 EX-99.H OTH MAT CONT

AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT

AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT THIS AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT, is hereby made as of September 8, 2023, between The MainStay Funds and MainStay Funds Trust (each a “Trust” and collectively, the “Trusts”), on behalf of each series of the Trusts as set forth on Schedule A (each a “Fund” and collectively, “Funds”), and New York Life Investment Management LLC (the “Manager”) (“Agreement”).

October 25, 2023 EX-99.D ADVSR CONTR

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amendment to the Amended and Restated Subadvisory Agreement, is made as of the 8th day of September 2023, between New York Life Investment Management LLC, a Delaware limited liability company (the “Manager”) and MacKay Shields LLC, a Delaware limited liability company (the “Subadvisor”).

October 25, 2023 EX-99.H OTH MAT CONT

AMENDMENT TO AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT

AMENDMENT TO AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT This Amendment to the Amended and Restated Transfer Agency and Service Agreement (“Amendment”) is effective as of the 24th day of July, 2023, by and among The MainStay Funds, a Massachusetts business trust, and MainStay VP Funds Trust and MainStay Funds Trust, each a Delaware statutory trust (each, a “Fund” and collectively, the “Funds”) and NYLIM Service Company LLC, a Delaware limited liability company, having its principal office and place of business at 30 Hudson Street, Jersey City, New Jersey 07302 (“NSC”).

October 25, 2023 EX-99.J OTHER OPININ

POWER OF ATTORNEY

POWER OF ATTORNEY KNOWN ALL PERSONS BY THESE PRESENTS, that the undersigned constitutes and appoints each of J.

October 25, 2023 EX-99.D ADVSR CONTR

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO THE SUBADVISORY AGREEMENT

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO THE SUBADVISORY AGREEMENT This Amendment to the Subadvisory Agreement, is made as of the 26th day of April, 2021, between New York Life Investment Management LLC, a Delaware limited liability company (the “Manager”) and Epoch Investment Partners, Inc.

October 25, 2023 EX-99.G CUST AGREEMT

AMENDMENT TO GLOBAL CUSTODY AGREEMENT

AMENDMENT TO GLOBAL CUSTODY AGREEMENT This Amendment is made on March 30, 2023, to the Global Custody Agreement dated June 22, 2020, as amended from time to time (the Agreement”), between JPMorgan Chase Bank, National Association J.

October 25, 2023 EX-99.G CUST AGREEMT

AMENDMENT TO GLOBAL CUSTODY AGREEMENT

AMENDMENT TO GLOBAL CUSTODY AGREEMENT This Amendment is made on May 16, 2023, to the Global Custody Agreement dated June 22, 2020, as amended from time to time (the Agreement”), between JPMorgan Chase Bank, National Association J.

October 25, 2023 EX-99.D ADVSR CONTR

MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDED AND RESTATED SUBADVISORY AGREEMENT

MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amended and Restated Subadvisory Agreement is effective as of the 1st day of July, 2022 (the “Agreement”), between New York Life Investment Management LLC, a Delaware limited liability company (the “Manager”) and Candriam, a partnership limited by shares organized under the laws of Luxembourg (the “Subadvisor”).

October 25, 2023 EX-99.H OTH MAT CONT

AMENDMENT TO AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT

AMENDMENT TO AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT This Amendment to the Amended and Restated Transfer Agency and Service Agreement (“Amendment”) is effective as of the 28th day of August, 2023, by and among The MainStay Funds, a Massachusetts business trust, and MainStay VP Funds Trust and MainStay Funds Trust, each a Delaware statutory trust (each, a “Fund” and collectively, the “Funds”) and NYLIM Service Company LLC, a Delaware limited liability company, having its principal office and place of business at 30 Hudson Street, Jersey City, New Jersey 07302 (“NSC”).

October 25, 2023 POS EX

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON OCTOBER 25, 2023

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON OCTOBER 25, 2023 FILE NO. 033-02610 FILE NO. 811-04550 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM N-1A REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Post-Effective Amendment No. 164 AND REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 Amendment No. 167 THE MAINSTAY FUNDS (exact name o

October 25, 2023 EX-99.D ADVSR CONTR

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO THE SUBADVISORY AGREEMENT

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO THE SUBADVISORY AGREEMENT This Amendment to the Subadvisory Agreement, is made as of the 1st day of May, 2023, between New York Life Investment Management LLC, a Delaware limited liability company (the “Manager”) and Wellington Management Company LLP, a Delaware limited liability partnership (the “Subadvisor”).

October 25, 2023 EX-99.D ADVSR CONTR

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amendment to the Amended and Restated Subadvisory Agreement, is made as of the 28th day of August 2023, between New York Life Investment Management LLC, a Delaware limited liability company (the “Manager”) and MacKay Shields LLC, a Delaware limited liability company (the “Subadvisor”).

October 25, 2023 EX-99.D ADVSR CONTR

THE MAINSTAY FUNDS AMENDMENT TO THE AMENDED AND RESTATED MANAGEMENT AGREEMENT

THE MAINSTAY FUNDS AMENDMENT TO THE AMENDED AND RESTATED MANAGEMENT AGREEMENT This Amendment to the Amended and Restated Management Agreement is hereby made as of the 8th day of September, 2023, between The MainStay Funds, a Massachusetts business trust (the “Trust”), on behalf of its series as set forth on Schedule A (each, a “Fund,” and collectively, the “Funds”) and New York Life Investment Management LLC, a Delaware limited liability company (the “Manager”).

March 27, 2023 POS EX

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON March 27, 2023

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON March 27, 2023 FILE NO. 033-02610 FILE NO. 811-04550 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM N-1A REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Post-Effective Amendment No. 163 AND REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 Amendment No. 166 THE MAINSTAY FUNDS (exact name of

March 27, 2023 EX-99.P CODE ETH

Code of Ethics of Nuveen Investments Inc. dated July 2022 – Filed herewith

Nuveen Compliance | 18 July 2022 Code of Ethics SUMMARY AND SCOPE What the Code is about Helping to ensure that Nuveen personnel place the interests of Nuveen clients ahead of their own personal interests.

March 27, 2023 EX-99.P CODE ETH

Code of Ethics of Wellington Management Company LLC dated September 2022 – Filed herewith

The reputation of a thousand years may be determined by the conduct of one hour. – Ancient proverb A message from our CEO Jean M. Hynes Chief Executive Officer Our ability to thrive as an organization is driven by our shared values, and integrity is at the top of the list. This is reflected in our commitment to the “Client, Firm, Self” framework, through which all of our decisions should be viewed

September 28, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 90.

September 28, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 90.

September 28, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 90.

September 28, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 90.

September 28, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 90.

September 28, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

NPORT-EX 2 MSF1031.htm MSF 1031 MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 90.4% Corporate Bonds 5.0% Brazil 0.8%  Braskem Netherlands Finance BV Series Reg S                      4.50%, due 1/31/30 (a) $     600,000 $    547,500 Georgia 0.9%  Georgian Railway JSC Series Reg S                      4.00%, d

September 28, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

NPORT-EX 2 MSF1031.htm MSF 1031 MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 90.4% Corporate Bonds 5.0% Brazil 0.8%  Braskem Netherlands Finance BV Series Reg S                      4.50%, due 1/31/30 (a) $     600,000 $    547,500 Georgia 0.9%  Georgian Railway JSC Series Reg S                      4.00%, d

September 28, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

NPORT-EX 2 MSF1031.htm MSF 1031 MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 90.4% Corporate Bonds 5.0% Brazil 0.8%  Braskem Netherlands Finance BV Series Reg S                      4.50%, due 1/31/30 (a) $     600,000 $    547,500 Georgia 0.9%  Georgian Railway JSC Series Reg S                      4.00%, d

September 28, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

NPORT-EX 2 MSF1031.htm MSF 1031 MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 90.4% Corporate Bonds 5.0% Brazil 0.8%  Braskem Netherlands Finance BV Series Reg S                      4.50%, due 1/31/30 (a) $     600,000 $    547,500 Georgia 0.9%  Georgian Railway JSC Series Reg S                      4.00%, d

September 28, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

NPORT-EX 2 MSF1031.htm MSF 1031 MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 90.4% Corporate Bonds 5.0% Brazil 0.8%  Braskem Netherlands Finance BV Series Reg S                      4.50%, due 1/31/30 (a) $     600,000 $    547,500 Georgia 0.9%  Georgian Railway JSC Series Reg S                      4.00%, d

September 28, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

NPORT-EX 2 MSF1031.htm MSF 1031 MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 90.4% Corporate Bonds 5.0% Brazil 0.8%  Braskem Netherlands Finance BV Series Reg S                      4.50%, due 1/31/30 (a) $     600,000 $    547,500 Georgia 0.9%  Georgian Railway JSC Series Reg S                      4.00%, d

March 31, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 83.

March 31, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 83.

March 31, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 83.

March 31, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 83.

March 31, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 83.

March 31, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 83.

March 31, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 83.

March 31, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 83.

March 31, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 83.

March 31, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 83.

March 31, 2022 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2022† (Unaudited) Principal Amount Value Long-Term Bonds 83.

March 7, 2022 EX-99.P CODE ETH

Code of Ethics of Nuveen Investments Inc. (Winslow Capital Management, Inc.) dated July 2022 to Nuveen Investments Inc. (Winslow Capital Management, Inc.), as supplemented on October 26, 2022 – Previously filed as Exhibit (p)(4) to Post-Effective Amendment No. 161 on March 4, 2022*

EX-99.P CODE ETH 13 ex99pcodeeth-2.htm Exhibit (p)(4) nuveen A TIAA Company Code of Ethics SUMMARY AND SCOPE What the Code is about Helping to ensure that Nuveen personnel place the interests of Nuveen clients ahead of their own personal interests. Who the Code applies to and what the implications are This Code applies to individuals in the following categories: • Nuveen Employees based in the US

March 7, 2022 EX-99.D ADVSR CONTR

Amendment dated November 30, 2021 – Previously filed as Exhibit (d)(2)(a)(xviii) to Post-Effective Amendment No. 161 on March 4, 2022*

Exhibit (d)(2)(a)(xviii) THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amendment to the Amended and Restated Subadvisory Agreement, is made as of the 30th day of November, 2021, between New York Life Investment Management LLC, a Delaware limited liability company (the ?Manager?) and MacKay Shields LLC, a Delaware limited liability company (the ?Subadvisor?).

March 7, 2022 EX-99.H OTH MAT CONT

Amended and Restated Expense Limitation Agreement dated August 28, 2022 – Previously filed as Exhibit (h)(5)(j) to Post-Effective Amendment No. 176 to the Trust’s Registration Statement filed on September 9, 2022

Exhibit (h)(7)(i) AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT THIS AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT, is hereby made as of February 28, 2022, between The MainStay Funds and MainStay Funds Trust (each a ?Trust? and collectively, the ?Trusts?), on behalf of each series of the Trusts as set forth on Schedule A (each a ?Fund? and collectively, ?Funds?), and New York Life Investment Management LLC (the ?Manager?) (?Agreement?).

March 7, 2022 EX-99.D ADVSR CONTR

Amendment dated February 28, 2022 – Previously filed Exhibit (d)(1)(j) to Post-Effective Amendment No. 161 on March 4, 2022*

Exhibit (d)(1)(j) THE MAINSTAY FUNDS AMENDMENT TO THE AMENDED AND RESTATED MANAGEMENT AGREEMENT This Amendment to the Amended and Restated Management Agreement is hereby made as of the 28th day of February, 2022, between The MainStay Funds, a Massachusetts business trust (the ?Trust?), on behalf of its series as set forth on Schedule A (each, a ?Fund,? and collectively, the ?Funds?) and New York Life Investment Management LLC, a Delaware limited liability company (the ?Manager?).

March 7, 2022 EX-99.A CHARTER

Establishment and Designation of Class Shares of Beneficial Interest, Par Value $0.01 Per Share effective March 29, 2013 – Previously filed as Exhibit (a)(40) to Post-Effective Amendment No. 161 on March 4, 2022*

Exhibit (a)(40) THE MAINSTAY FUNDS Establishment and Designation of Class of Shares of Beneficial Interest, Par Value $0.

March 7, 2022 EX-99.H OTH MAT CONT

Amendment dated February 28, 2022 – Previously filed as Exhibit (h)(1)(xxxv) to Post-Effective Amendment No. 161 on March 4, 2022*

Exhibit (h)(1)(xxxv) AMENDMENT TO AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT This Amendment to the Amended and Restated Transfer Agency and Service Agreement (?Amendment?) is effective as of the 28th day of February, 2022, by and among The MainStay Funds, a Massachusetts business trust, and MainStay VP Funds Trust and MainStay Funds Trust, each a Delaware statutory trust (each, a ?Fund? and collectively, the ?Funds?) and NYLIM Service Company LLC, a Delaware limited liability company, having its principal office and place of business at 30 Hudson Street, Jersey City, New Jersey 07302 (?NSC?).

March 7, 2022 EX-99.H OTH MAT CONT

Amended and Restated Expense Limitation Agreement dated March 21, 2022 – Previously filed as Exhibit (h)(5)(h) to Post-Effective Amendment No. 176 to the Trust’s Registration Statement filed on September 9, 2022

Exhibit (h)(7)(i) AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT THIS AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT, is hereby made as of November 30, 2021, between The MainStay Funds and MainStay Funds Trust (each a ?Trust? and collectively, the ?Trusts?), on behalf of each series of the Trusts as set forth on Schedule A (each a ?Fund? and collectively, ?Funds?), and New York Life Investment Management LLC (the ?Manager?) (?Agreement?).

March 7, 2022 EX-99.H OTH MAT CONT

Amended and Restated Expense Limitation Agreement dated December 13, 2021 – Previously filed as Exhibit (h)(7)(j) to Post-Effective Amendment No. 161 on March 4, 2022*

Exhibit (h)(7)(i) AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT THIS AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT, is hereby made as of December 13, 2021, between The MainStay Funds and MainStay Funds Trust (each a ?Trust? and collectively, the ?Trusts?), on behalf of each series of the Trusts as set forth on Schedule A (each a ?Fund? and collectively, ?Funds?), and New York Life Investment Management LLC (the ?Manager?) (?Agreement?).

March 7, 2022 POS EX

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MARCH 4, 2022

POS EX 1 posex.htm AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MARCH 4, 2022 FILE NO. 033-02610 FILE NO. 811-04550 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM N-1A REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Post-Effective Amendment No. 161 AND REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 Amendment No. 164 THE MAINSTAY FUN

March 7, 2022 EX-99.P CODE ETH

Code of Ethics of Epoch Investment Partners, Inc. dated October 2021 – Filed herewith

Exhibit (p)(5) Epoch Investment Partners, Inc. Code of Ethics and Business Conduct October 2021 Table of Contents Retaliation Prohibite d 5 What is confidential information about Epoch ? 8 What is non-public information ? 8 What is material information ? 8 How might I receive information about Epoch that is non-public and confidential ? 9 How might I receive information that is non-public and mate

March 7, 2022 EX-99.N 18F-3 PLAN

Amended and Restated Multiple Class Plan Pursuant to Rule 18f-3 dated February 28, 2021 – Previously filed as Exhibit (n)(1) to Post-Effective Amendment No. 161 on March 4, 2022*

Exhibit (h)(1)(xxxv) AMENDED AND RESTATED MULTIPLE CLASS PLAN PURSUANT TO RULE 18f-3 MAINSTAY FUNDS TRUST THE MAINSTAY FUNDS WHEREAS, MainStay Funds Trust and The MainStay Funds (each, a ?Trust?), on behalf of the separate series of each Trust, each engage in business as an open-end management investment company and is registered as such under the Investment Company Act of 1940, as amended (the ?A

March 7, 2022 EX-99.P CODE ETH

Code of Ethics of Candriam Belgium/France/Luxembourg dated November 2021 – Filed herewith

Exhibit (p)(3) CODE OF ETHICS CANDRIAM Drafted by Compliance Department Date approved by Corporate Compliance Committee 19/03/2021 Date approved by Board of Management Candriam Belgium - 23/03/2021 Candriam Luxembourg ? 23/04/2021 Candriam France ? 25/05/2021 Scope All Candriam employees Creation date 7 June 2015 Last updated 11/03/2021 Contents Error! No table of contents entries found.

March 7, 2022 EX-99.D ADVSR CONTR

Amendment dated February 28, 2022 –Previously filed as Exhibit (d)(2)(a)(xix) to Post-Effective Amendment No.161 on March 4, 2022*

Exhibit (d)(2)(a)(xix) THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amendment to the Amended and Restated Subadvisory Agreement, is made as of the 28th day of February 2022, between New York Life Investment Management LLC, a Delaware limited liability company (the ?Manager?) and MacKay Shields LLC, a Delaware limited liability company (the ?Subadvisor?).

March 7, 2022 EX-99.H OTH MAT CONT

Form of MainStay Funds 12d1-4 Agreement – Previously filed as Exhibit (h)(9) to Post-Effective Amendment No. 161 on March 4, 2022*

Exhibit (h)(1)(xxxv) FORM OF FUND OF FUNDS INVESTMENT AGREEMENT THIS FUND OF FUNDS INVESTMENT AGREEMENT (the ?Agreement?), dated as of January , 2022 (the ?Effective Date?), is made by and between each investment company (each, an ?Acquiring Registrant?), for itself, and on behalf of each of its portfolio series listed on Schedule A (the ?Acquiring Funds?), and each investment company (each, an ?Acquired Registrant?), for itself, and on behalf of each of its portfolio series listed on Schedule B (the ?Acquired Funds?), each severally and not jointly.

February 22, 2022 CORRESP

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST 51 MADISON AVENUE NEW YORK, NEW YORK 10010

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST 51 MADISON AVENUE NEW YORK, NEW YORK 10010 VIA EDGAR CORRESPONDENCE February 22, 2022 Mr.

February 18, 2022 CORRESP

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST 51 MADISON AVENUE NEW YORK, NEW YORK 10010

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST 51 MADISON AVENUE NEW YORK, NEW YORK 10010 VIA EDGAR CORRESPONDENCE February 18, 2022 Mr.

February 14, 2022 CORRESP

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST 51 MADISON AVENUE NEW YORK, NEW YORK 10010

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST 51 MADISON AVENUE NEW YORK, NEW YORK 10010 VIA EDGAR CORRESPONDENCE February 14, 2022 Mr.

January 11, 2022 COVER

THE MAINSTAY FUNDS 51 MADISON AVENUE NEW YORK, NY 10010

THE MAINSTAY FUNDS 51 MADISON AVENUE NEW YORK, NY 10010 January 10, 2022 VIA EDGAR Securities and Exchange Commission Division of Investment Management 100 F Street, N.

November 4, 2021 EX-99.P CODE ETH

Code of Ethics of Registrant dated September 2021 – Previously filed as Exhibit (p)(1) to Post-Effective Amendment No. 156 on November 4, 2021*

EX-99.P CODE ETH 18 ex99pcodeeth-1.htm REGISTRANT'S COE 9-21 Exhibit (p)(1) THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST MAINSTAY MACKAY DEFINEDTERM MUNICIPAL OPPORTUNITIES FUND MAINSTAY CBRE GLOBAL INFRASTRUCTURE MEGATRENDS FUND CODE OF ETHICS September 2021 TABLE OF CONTENTS SECTION PAGE I. INTRODUCTION 1 II. POLICY 2 III. REPORTING REQUIREMENTS 3 IV. RECORDKEEPING 6 EXHIBITS

November 4, 2021 POS EX

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON NOVEMBER 4, 2021

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON NOVEMBER 4, 2021 FILE NO. 033-02610 FILE NO. 811-04550 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM N-1A REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Post-Effective Amendment No. 156 AND REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 Amendment No. 159 THE MAINSTAY FUNDS (exact name o

November 4, 2021 EX-99.D ADVSR CONTR

Amendment dated April 26, 2021 – Previously filed as Exhibit (d)(1)(i) to Post-Effective Amendment No. 156 on November 4, 2021*

Exhibit (d)(1)(i) THE MAINSTAY FUNDS AMENDMENT TO THE AMENDED AND RESTATED MANAGEMENT AGREEMENT This Amendment to the Amended and Restated Management Agreement is hereby made as of the 26th day of April, 2021, between The MainStay Funds, a Massachusetts business trust (the ?Trust?), on behalf of its series as set forth on Schedule A (each, a ?Fund,? and collectively, the ?Funds?) and New York Life Investment Management LLC, a Delaware limited liability company (the ?Manager?).

November 4, 2021 EX-99.H OTH MAT CONT

Amendment dated September 30, 2021 – Previously filed as Exhibit (h)(1)(xxxiii) to Post-Effective Amendment No. 156 on November 4, 2021*

EX-99.H OTH MAT CONT 11 ex99hothmatcont-1.htm TA AMENDMENT 9-30-21 Exhibit (h)(1)(a)(xxxiii) AMENDMENT TO AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT This Amendment to the Amended and Restated Transfer Agency and Service Agreement (“Amendment”) is effective as of the 30th day of September, 2021, by and among The MainStay Funds, a Massachusetts business trust, and MainStay VP Funds T

November 4, 2021 EX-99.G CUST AGREEMT

Amendment dated May 1, 2021 – Previously filed as Exhibit (g)(1)(a) to Post-Effective Amendment No. 156 on November 4, 2021*

EX-99.G CUST AGREEMT 9 ex99gcustagreemt-1.htm CUSTODIAN AMENDMENT 5-1-21 Exhibit (g)(1)(a) AMENDMENT NO. 1 TO GLOBAL CUSTODY AGREEMENT This Amendment is made on May 1, 2021, to the Global Custody Agreement dated June 22, 2020, as amended from time to time (the Agreement”), between JPMorgan Chase Bank, National Association J.P. Morgan and each of the investment companies listed on Annex B to the Ag

November 4, 2021 EX-99.D ADVSR CONTR

Amendment dated April 26, 2021 – Previously filed as Exhibit (d)(2)(a)(xv) to Post-Effective Amendment No. 156 on November 4, 2021*

Exhibit (d)(a)(xv) THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amendment to the Amended and Restated Subadvisory Agreement, is made as of the 26th day of April, 2021, between New York Life Investment Management LLC, a Delaware limited liability company (the “Manager”) and MacKay Shields LLC, a Delaware limited liability company (the “Subadvisor”).

November 4, 2021 EX-99.H OTH MAT CONT

Amended and Restated Expense Limitation Agreement dated September 30, 2021 – Previously filed as Exhibit (h)(7)(h) to Post-Effective Amendment No. 156 on November 4, 2021*

EX-99.H OTH MAT CONT 17 ex99hothmatcont-7.htm ELA 9-30-21 Exhibit (h)(7)(h) AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT THIS AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT, is hereby made as of September 30, 2021, between The MainStay Funds and MainStay Funds Trust (each a "Trust" and collectively, the "Trusts"), on behalf of each series of the Trusts as set forth on Schedule A (each a "F

November 4, 2021 EX-99.H OTH MAT CONT

Amended and Restated Expense Limitation Agreement dated July 1, 2021 – Previously filed as Exhibit (h)(7)(f) to Post-Effective Amendment No. 156 on November 4, 2021*

EX-99.H OTH MAT CONT 15 ex99hothmatcont-5.htm ELA 7-1-21 Exhibit (h)(7)(f) AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT THIS AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT, is hereby made as of July 1, 2021, between The MainStay Funds and MainStay Funds Trust (each a "Trust" and collectively, the "Trusts"), on behalf of each series of the Trusts as set forth on Schedule A (each a "Fund" an

November 4, 2021 EX-99.D ADVSR CONTR

Amendment dated August 28, 2021 – Previously filed as Exhibit (d)(2)(a)(xvii) to Post-Effective Amendment No. 156 on November 4, 2021*

Exhibit (d)(2)(a)(xvii) THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amendment to the Amended and Restated Subadvisory Agreement, is made as of the 28th day of August, 2021, between New York Life Investment Management LLC, a Delaware limited liability company (the ?Manager?) and MacKay Shields LLC, a Delaware limited liability company (the ?Subadvisor?).

November 4, 2021 EX-99.H OTH MAT CONT

Amended and Restated Expense Limitation Agreement dated March 19, 2021 – Previously filed as Exhibit (h)(7)(d) to Post-Effective Amendment No. 156 on November 4, 2021*

EX-99.H OTH MAT CONT 13 ex99hothmatcont-3.htm ELA 3-19-21 Exhibit (h)(7)(d) AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT THIS AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT, is hereby made as of March 19, 2021, between The MainStay Funds and MainStay Funds Trust (each a "Trust" and collectively, the "Trusts"), on behalf of each series of the Trusts as set forth on Schedule A (each a "Fund"

November 4, 2021 EX-99.G CUST AGREEMT

Amendment dated September 9, 2021 – Previously filed as Exhibit (g)(1)(b) to Post-Effective Amendment No. 156 on November 4, 2021*

EX-99.G CUST AGREEMT 10 ex99gcustagreemt-2.htm CUSTODIAN AMENDMENT 9-9-21 Exhibit (g)(1)(b) AMENDMENT NO. 2 TO GLOBAL CUSTODY AGREEMENT This Amendment is made on Sept. 9, 2021, to the Global Custody Agreement dated June 22, 2020, as amended from time to time (the Agreement”), between JPMorgan Chase Bank, National Association J.P. Morgan and each of the investment companies listed on Annex B to the

November 4, 2021 EX-99.D ADVSR CONTR

Amendment dated May 1, 2021 – Previously filed as Exhibit (d)(2)(a)(xvi) to Post-Effective Amendment No. 156 on November 4, 2021*

Exhibit (d)(2)(a)(xvi) THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amendment to the Amended and Restated Subadvisory Agreement, is made as of the 1st day of May, 2021, between New York Life Investment Management LLC, a Delaware limited liability company (the ?Manager?) and MacKay Shields LLC, a Delaware limited liability company (the ?Subadvisor?).

November 4, 2021 EX-99.H OTH MAT CONT

Amended and Restated Expense Limitation Agreement dated August 28, 2021 – Previously filed as Exhibit (h)(7)(g) to Post-Effective Amendment No. 156 on November 4, 2021*

EX-99.H OTH MAT CONT 16 ex99hothmatcont-6.htm ELA 8-28-21 Exhibit (h)(7)(g) AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT THIS AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT, is hereby made as of August 28, 2021, between The MainStay Funds and MainStay Funds Trust (each a "Trust" and collectively, the "Trusts"), on behalf of each series of the Trusts as set forth on Schedule A (each a "Fund

November 4, 2021 EX-99.D ADVSR CONTR

Amendment dated March 5, 2021 – Previously filed as Exhibit (d)(1)(h) to Post-Effective Amendment No. 156 on November 4, 2021*

Exhibit (d)(1)(h) THE MAINSTAY FUNDS AMENDMENT TO THE AMENDED AND RESTATED MANAGEMENT AGREEMENT This Amendment to the Amended and Restated Management Agreement is hereby made as of the 5th day of March, 2021, between The MainStay Funds, a Massachusetts business trust (the “Trust”), on behalf of its series as set forth on Schedule A (each, a “Fund,” and collectively, the “Funds”) and New York Life Investment Management LLC, a Delaware limited liability company (the “Manager”).

November 4, 2021 EX-99.A CHARTER

Redesignation of Series of Shares of Beneficial Interest, Par Value $0.01 Per Share effective March 5, 2021 and April 26, 2021 (Common Stock and MAP Equity) – Previously filed as Exhibit (a)(39) to Post-Effective Amendment No. 156 on November 4, 2021*

The MainStay Funds Redesignation of Series of Shares of Beneficial Interest, Par Value $0.

November 4, 2021 EX-99.A CHARTER

Redesignation of Series of Shares of Beneficial Interest, Par Value $0.01 Per Share effective February 28, 2020, August 31, 2020 and February 28, 2021 (Large Cap Growth, Infrastructure Bond and Unconstrained Bond) – Previously filed as Exhibit (a)(38) to Post-Effective Amendment No. 156 on November 4, 2021*

The MainStay Funds Redesignation of Series of Shares of Beneficial Interest, Par Value $0.

November 4, 2021 EX-99.H OTH MAT CONT

Amended and Restated Expense Limitation Agreement dated April 26, 2021 – Previously filed as Exhibit (h)(7)(e) to Post-Effective Amendment No. 156 on November 4, 2021*

Exhibit (h)(7)(e) AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT THIS AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT, is hereby made as of April 26, 2021, between The MainStay Funds and MainStay Funds Trust (each a "Trust" and collectively, the "Trusts"), on behalf of each series of the Trusts as set forth on Schedule A (each a "Fund" and collectively, "Funds"), and New York Life Investment Management LLC (the "Manager") ("Agreement").

November 4, 2021 EX-99.H OTH MAT CONT

Amendment dated October 26, 2021 – Previously filed as Exhibit (h)(1)(xxxiv) to Post-Effective Amendment No. 156 on November 4, 2021*

Exhibit (h)(1)(a)(xxxiv) AMENDMENT TO AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT This Amendment to the Amended and Restated Transfer Agency and Service Agreement (“Amendment”) is effective as of the 26th day of October, 2021, by and among The MainStay Funds, a Massachusetts business trust, and MainStay VP Funds Trust and MainStay Funds Trust, each a Delaware statutory trust (each, a “Fund” and collectively, the “Funds”) and NYLIM Service Company LLC, a Delaware limited liability company, having its principal office and place of business at 30 Hudson Street, Jersey City, New Jersey 07302 (“NSC”).

November 4, 2021 EX-99.P CODE ETH

Code of Ethics of New York Life Investment Management Holdings LLC dated August 2021 – Previously filed as Exhibit (p)(2) to Post-Effective Amendment No. 156 on November 4, 2021*

Exhibit (p)(2) New York Life Investment Management Holdings LLC Code of Ethics August 2021 SECTION 1 GENERAL FIDUCIARY PRINCIPLES AND STANDARDS OF BUSINESS CONDUCT This Code of Ethics (?Code?) has been adopted by New York Life Investment Management Holdings LLC? (?NYLIM Holdings?) and certain of its subsidiaries and affiliates (collectively, ?New York Life Investments? or the ?Company?)1 and is designed to comply with Rule 17j-1 under the Investment Company Act of 1940 (?Investment Company Act?) and with Rule 204A-1 under the Investment Advisers Act of 1940 (?Advisers Act?).

September 24, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

September 24, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

September 24, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

September 24, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

September 24, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

September 24, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

September 24, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

September 24, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

September 24, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

September 24, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

September 24, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

May 17, 2021 POS EX

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MAY 17, 2021

POS EX 1 posex.htm AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MAY 17, 2021 SECURITIES ACT FILE NO. 333-252771 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM N-14 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Pre-Effective Amendment No. [ ] Post-Effective Amendment No. 2 THE MAINSTAY FUNDS (exact name of registrant as specified in charter) 51 MAD

May 17, 2021 EX-99.12 TAX OPINION

Filed herewith

EX-99.12 TAX OPINION 3 ex9912taxopinion-1.htm Exhibit 12 April 26, 2021 Board of Trustees MainStay Epoch U.S. All Cap Fund MainStay Funds Trust 51 Madison Avenue New York, New York 10010 Board of Trustees MainStay WMC Enduring Capital Fund The MainStay Funds 51 Madison Avenue New York, New York 10010 Dear Ladies and Gentlemen: You have requested our opinion regarding certain federal income tax con

May 17, 2021 POS EX

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MAY 17, 2021

POS EX 1 posex.htm AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MAY 17, 2021 SECURITIES ACT FILE NO. 333-252772 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM N-14 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Pre-Effective Amendment No. [ ] Post-Effective Amendment No. 2 THE MAINSTAY FUNDS (exact name of registrant as specified in charter) 51 MAD

May 17, 2021 EX-99.4 ACQ AGREEMNT

Filed herewith

EX-99.4 ACQ AGREEMNT 2 ex994acqagreemnt-1.htm Exhibit 4 AGREEMENT AND PLAN OF REORGANIZATION MAINSTAY MACKAY U.S. EQUITY OPPORTUNITIES FUND MAINSTAY WMC ENDURING CAPITAL FUND The Board of Trustees of MainStay Funds Trust, a Delaware statutory trust, and The MainStay Funds, a Massachusetts business trust (the “Board”), deems it advisable that MainStay WMC Enduring Capital Fund (the “Acquiring Fund”

May 17, 2021 EX-99.4 ACQ AGREEMNT

Filed herewith

Exhibit 4 AGREEMENT AND PLAN OF REORGANIZATION MAINSTAY EPOCH U.S. ALL CAP FUND MAINSTAY WMC ENDURING CAPITAL FUND The Board of Trustees of MainStay Funds Trust, a Delaware statutory trust, and The MainStay Funds, a Massachusetts business trust (the ?Board?), deems it advisable that MainStay WMC Enduring Capital Fund (the ?Acquiring Fund?) and MainStay Epoch U.S. All Cap Fund (the ?Acquired Fund?)

May 17, 2021 EX-99.12 TAX OPINION

Filed herewith

Exhibit 12 April 26, 2021 Board of Trustees MainStay MacKay U.S. Equity Opportunities Fund MainStay Funds Trust 51 Madison Avenue New York, New York 10010 Board of Trustees MainStay WMC Enduring Capital Fund The MainStay Funds 51 Madison Avenue New York, New York 10010 Dear Ladies and Gentlemen: You have requested our opinion regarding certain federal income tax consequences to MainStay MacKay U.S

March 30, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

March 30, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

March 30, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

March 30, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

March 30, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

March 30, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

March 30, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

March 30, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

March 30, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

March 30, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

March 30, 2021 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2021† (Unaudited) Principal Amount Value Long-Term Bonds 93.

March 23, 2021 EX-99.D ADVSR CONTR

Amendment dated March 5, 2021 – Previously filed as Exhibit (d)(2)(a)(xiv) to Post-Effective Amendment No. 155 on March 23, 2021*

EX-99.D ADVSR CONTR 4 ex99dadvsrcontr-3.htm MACKAY AMENDMENT 3-5-21 Exhibit (d)(2)(a)(xiv) THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amendment to the Amended and Restated Subadvisory Agreement, is made as of the 5th day of March, 2021, between New York Life Investment Management LLC, a Delaware limited liability com

March 23, 2021 POS EX

-

POS EX 1 posex.htm AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MARCH 22, 2021 FILE NO. 033-02610 FILE NO. 811-04550 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM N-1A REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Post-Effective Amendment No. 155 AND REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 Amendment No. 158 THE MAINSTAY FU

March 23, 2021 EX-99.P CODE ETH

Code of Ethics of New York Life Investment Management Holdings LLC dated June 2020 – Filed herewith

EX-99.P CODE ETH 10 ex99pcodeeth-1.htm NYLIM HOLDINGS COE Exhibit (p)(4) New York Life Investment Management Holdings LLC Code of Ethics June 2020 SECTION 1 GENERAL FIDUCIARY PRINCIPLES AND STANDARDS OF BUSINESS CONDUCT This Code of Ethics (“Code”) has been adopted by New York Life Investment Management Holdings LLC’ (“NYLIM Holdings”) and certain of its divisions, subsidiaries and affiliates (col

March 23, 2021 EX-99.G CUST AGREEMT

Global Custody Agreement with JPMorgan Chase Bank, National Association dated June 22, 2020 – Previously filed as Exhibit (g)(3) to Post-Effective Amendment No. 155 on March 23, 2021*

EX-99.G CUST AGREEMT 6 ex99gcustagreemt-1.htm JPMORGAN CUSTODIAN AGMT Exhibit (g)(3) 1. INTENTION OF THE PARTIES; DEFINITIONS 4 1.1 INTENTION OF THEPARTIES 4 1.2 DEFINITIONS;INTERPRETATION 4 2. WHAT J.P. MORGAN IS REQUIRED TO DO 7 2.1 SET UP ACCOUNTS 7 2.2 DEPOSIT OF CASH 8 2.3 SEGREGATION AND REGISTRATION OF ASSETS; NOMINEE NAME 9 2.4 SETTLEMENT OF TRANSACTIONS 9 2.5 CONTRACTUAL SETTLEMENT DATE A

March 23, 2021 EX-99.P CODE ETH

Code of Ethics of Nuveen Investments Inc. (Winslow Capital Management, Inc.) dated August 2020 – Previously filed as Exhibit (p)(5) to Post-Effective Amendment No. 155 on March 23, 2021*

EX-99.P CODE ETH 11 ex99pcodeeth-2.htm NUVEEN (WINSLOW) COE (p)(5) Nuveen Compliance | 13 August 2020 Code of Ethics SUMMARY AND SCOPE What the Code is about Helping to ensure that Nuveen personnel place the interests of Nuveen clients ahead of their own personal interests. Who the Code applies to and what the implications are This Code applies to individuals in the following categories: • Nuveen

March 23, 2021 EX-99.H OTH MAT CONT

Amended and Restated Expense Limitation Agreement dated March 5, 2021 – Filed herewith

Exhibit (h)(7)(c) AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT THIS AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT, is hereby made as of March 5, 2021, between The MainStay Funds and MainStay Funds Trust (each a "Trust" and collectively, the "Trusts"), on behalf of each series of the Trusts as set forth on Schedule A (each a "Fund" and collectively, "Funds"), and New York Life Investment Management LLC (the "Manager") ("Agreement").

March 23, 2021 EX-99.D ADVSR CONTR

Subadvisory Agreement between New York Life Investment Management LLC and Wellington Management Company LLC dated March 5, 2021 – Previously filed as Exhibit (d)(2)(g) to Post-Effective Amendment No. 155 on March 23, 2021*

Exhibit (d)(2)(g) THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST SUBADVISORY AGREEMENT This Subadvisory Agreement, is effective as of the 5th day of March, 2021 (the ?Agreement?), between New York Life Investment Management LLC, a Delaware limited liability company (the ?Manager?) and Wellington Management Company LLP, a Delaware limited liability partnership (the ?Subadvisor?).

March 23, 2021 EX-99.P CODE ETH

Code of Ethics of Epoch Investment Partners, Inc. dated October 2020 – Previously filed as Exhibit (p)(6) to Post-Effective Amendment No. 155 on March 23, 2021*

EX-99.P CODE ETH 12 ex99pcodeeth-3.htm EPOCH COE (p)(6) Epoch Investment Partners, Inc. Code of Ethics and Business Conduct October 2020 Table of Contents Retaliation Prohibite d 5 What is confidential information about Epoch ? 8 What is non-public information ? 8 What is material information ? 8 How might I receive information about Epoch that is non-public and confidential ? 9 How might I receiv

March 23, 2021 EX-99.H OTH MAT CONT

Amended and Restated Expense Limitation Agreement (Transfer Agency) dated March 19, 2021 – Previously filed as Exhibit (h)(7)(b) to Post-Effective Amendment No. 155 on March 23, 2021*

Exhibit (h)(7)(b) AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT THIS AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT, is hereby made as of March 19, 2021, between The MainStay Funds and MainStay Funds Trust (each a "Trust" and together, the "Trusts"), on behalf of each series of the Trusts as currently in existence and any future share classes of such series, any future series of the Trusts (each a "Fund" and collectively, the "Funds"), and New York Life Investment Management LLC (the "Manager") ("Agreement").

March 23, 2021 EX-99.D ADVSR CONTR

Amendment dated February 28, 2021 – Previously filed as Exhibit (d)(2)(a)(xiii) to Post-Effective Amendment No. 155 on March 23, 2021*

Exhibit (d)(2)(a)(xiii) THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amendment to the Amended and Restated Subadvisory Agreement, is made as of the 28th day of February, 2021, between New York Life Investment Management LLC, a Delaware limited liability company (the ?Manager?) and MacKay Shields LLC, a Delaware limited liability company (the ?Subadvisor?).

March 23, 2021 EX-99.P CODE ETH

Code of Ethics of Wellington Management Company LLC dated September 2020 – Previously filed as Exhibit (p)(7) to Post-Effective Amendment No. 155 on March 23, 2021*

EX-99.P CODE ETH 13 ex99pcodeeth-4.htm WELLINGTON COE Exhibit (p)(7) WELLINGTON MANAGEMENT® Code of Ethics Personal investing Gifts and entertainment Outside activities Client confidentiality 1 June 2020 The reputation of a thousand years may be determined by the conduct of one hour. – Ancient proverb A message from our CEO Brendan J. Swords Chairman and Chief Executive Officer Our business is bui

March 23, 2021 EX-99.H OTH MAT CONT

Notice of Voluntary Expense Limitation Agreement dated March 5, 2021 – Previously filed as Exhibit (h)(7)(d) to Post-Effective Amendment No. 155 on March 23, 2021*

Exhibit (h)(7)(d) NOTICE OF VOLUNTARY EXPENSE LIMITATION THIS NOTICE OF VOLUNTARY EXPENSE LIMITATION is provided as of March 5, 2021 to MainStay Funds Trust and The MainStay Funds (each, a "Trust"), on behalf of each series of the Trust as set forth on Schedule A (the "Funds"), by New York Life Investment Management LLC (the "Manager").

March 23, 2021 EX-99.D ADVSR CONTR

Amendment dated March 5, 2021 – Filed herewith

Exhibit (d)(1)(h) THE MAINSTAY FUNDS AMENDMENT TO THE AMENDED AND RESTATED MANAGEMENT AGREEMENT This Amendment to the Amended and Restated Management Agreement is hereby made as of the 5th day of March, 2021, between The MainStay Funds, a Massachusetts business trust (the “Trust”), on behalf of its series as set forth on Schedule A (each, a “Fund,” and collectively, the “Funds”) and New York Life Investment Management LLC, a Delaware limited liability company (the “Manager”).

March 19, 2021 CORRESP

THE MAINSTAY FUNDS 51 Madison Avenue New York, NY 10010

THE MAINSTAY FUNDS 51 Madison Avenue New York, NY 10010 VIA EDGAR CORRESPONDENCE March 19, 2021 Mr.

February 5, 2021 EX-99.16

Powers of Attorney – Previously filed as Exhibit 16 to the Trust’s Registration Statement on Form N-14 on February 5, 2021*

Exhibit 16 POWER OF ATTORNEY KNOWN ALL PERSONS BY THESE PRESENTS, that the undersigned constitutes and appoints each of J.

February 5, 2021 EX-99.14(A)

Consent of Independent Registered Public Accounting Firm – Filed herewith

Exhibit 14(a) Consent of Independent Registered Public Accounting Firm To the Shareholders of the Funds and Board of Trustees MainStay Funds Trust and The MainStay Funds: We consent to the use of our reports dated December 23, 2020, with respect to the financial statements and financial highlights of MainStay Epoch U.

February 5, 2021 EX-99.12

Form of Tax Opinion – Filed herewith

Exhibit 12 Three Bryant Park 1095 Avenue of the Americas New York, NY 10036-6797 +1 212 698 3500 Main +1 212 698 3599 Fax www.

February 5, 2021 EX-99.14(A)

Consent of Independent Registered Public Accounting Firm – Filed herewith

Exhibit 99.14(a) Consent of Independent Registered Public Accounting Firm To the Shareholders of the Funds and Board of Trustees MainStay Funds Trust and The MainStay Funds: We consent to the use of our reports dated December 23, 2020, with respect to the financial statements and financial highlights of MainStay MacKay U.S. Equity Opportunities Fund, a series of MainStay Funds Trust, and MainStay

February 5, 2021 EX-99.11

Opinion of Counsel Regarding Legality of Shares Being Registered – Previously filed as Exhibit 11 to the Trust’s Registration Statement on Form N-14 on February 5, 2021*

Exhibit 11 1900 K Street, N.W. Washington, DC 20006-1110 +1 202 261 3300 Main +1 202 261 3333 Fax www.dechert.com February 5, 2021 Board of Trustees, The MainStay Funds 51 Madison Avenue New York, NY 10010 Re: Registration Statement on Form N-14 (MainStay MacKay Common Stock Fund (to be renamed MainStay WMC Enduring Capital Fund), a series of The MainStay Funds) Ladies and Gentlemen: We have acted

February 5, 2021 EX-99.16

Powers of Attorney – Previously filed as Exhibit 16 to the Trust’s Registration Statement on Form N-14 on February 5, 2021*

Exhibit 16 POWER OF ATTORNEY KNOWN ALL PERSONS BY THESE PRESENTS, that the undersigned constitutes and appoints each of J.

February 5, 2021 N-14

- N-14

N-14 1 tm214714d2n14.htm N-14 AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 5, 2021 SECURITIES ACT FILE NO. UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM N-14 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Pre-Effective Amendment No. [ ] Post-Effective Amendment No. [] THE MAINSTAY FUNDS (exact name of registrant as specified in charter) 5

February 5, 2021 EX-99.12

Form of Tax Opinion – Filed herewith

EX-99.12 3 tm214714d2ex99-12.htm FORM OF TAX OPINION OF DECHERT LLP Exhibit 12 Three Bryant Park 1095 Avenue of the Americas New York, NY 10036-6797 +1 212 698 3500 Main +1 212 698 3599 Fax www.dechert.com , 2021 Board of Trustees MainStay MacKay U.S. Equity Opportunities Fund MainStay Funds Trust 51 Madison Avenue New York, New York 10010 Board of Trustees MainStay WMC Enduring Capital Fund The M

February 5, 2021 DEF 14C

- DEF 14C

DEF 14C 1 tm214709d1def14c.htm DEF 14C UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C INFORMATION Information Statement Pursuant to Section 14(c) of the Securities Exchange Act of 1934 Check the appropriate box: ¨ Preliminary Information Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14c-5 (d)(2)) x Definitive Information Statem

February 5, 2021 DEF 14C

- DEF 14C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C INFORMATION Information Statement Pursuant to Section 14(c) of the Securities Exchange Act of 1934 Check the appropriate box: ¨ Preliminary Information Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14c-5 (d)(2)) x Definitive Information Statement THE MAINSTAY FUNDS (Name of Registr

February 5, 2021 EX-99.11

Opinion of Counsel Regarding Legality of Shares Being Registered – Previously filed as Exhibit 11 to the Trust’s Registration Statement on Form N-14 on February 5, 2021*

Exhibit 11 February 5, 2021 Board of Trustees, The MainStay Funds 51 Madison Avenue New York, NY 10010 Re: Registration Statement on Form N-14 (MainStay MacKay Common Stock Fund (to be renamed MainStay WMC Enduring Capital Fund), a series of The MainStay Funds) Ladies and Gentlemen: We have acted as counsel for The MainStay Funds (the “Trust”), a business trust duly organized and validly existing

February 5, 2021 N-14

- FORM N-14

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 5, 2021 SECURITIES ACT FILE NO.

September 28, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 95.

September 28, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 95.

September 28, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 95.

September 28, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 95.

September 28, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 95.

September 28, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 95.

September 28, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 95.

September 28, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 95.

September 28, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 95.

September 28, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 95.

September 28, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments July 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 95.

August 25, 2020 CORRESP

-

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST 51 Madison Avenue New York, NY 10010 VIA EDGAR CORRESPONDENCE August 25, 2020 Ms.

March 26, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 96.

March 26, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 96.

March 26, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 96.

March 26, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 96.

March 26, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 96.

March 26, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 96.

March 26, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 96.

March 26, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 96.

March 26, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 96.

March 26, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 96.

March 26, 2020 NPORT-EX

MainStay Candriam Emerging Markets Debt Fund

MainStay Candriam Emerging Markets Debt Fund Portfolio of Investments January 31, 2020 (Unaudited) Principal Amount Value Long-Term Bonds 96.

February 21, 2020 CORRESP

-

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST 51 Madison Avenue New York, NY 10010 VIA EDGAR CORRESPONDENCE February 21, 2020 Mr.

December 18, 2019 COVER

THE MAINSTAY FUNDS 51 MADISON AVENUE NEW YORK, NY 10010

THE MAINSTAY FUNDS 51 MADISON AVENUE NEW YORK, NY 10010 December 18, 2019 VIA EDGAR Securities and Exchange Commission Division of Investment Management 100 F Street, N.

September 27, 2019 NPORT-EX

Mainstay Funds NPORT-EX - -

MainStay Income Builder Fund Portfolio of Investments July 31, 2019 (Unaudited) Principal Amount Value Long-Term Bonds 53.

September 27, 2019 NPORT-EX

Mainstay Funds NPORT-EX - -

MainStay Income Builder Fund Portfolio of Investments July 31, 2019 (Unaudited) Principal Amount Value Long-Term Bonds 53.

September 27, 2019 NPORT-EX

Mainstay Funds NPORT-EX - -

MainStay Income Builder Fund Portfolio of Investments July 31, 2019 (Unaudited) Principal Amount Value Long-Term Bonds 53.

September 27, 2019 NPORT-EX

Mainstay Funds NPORT-EX - -

MainStay Income Builder Fund Portfolio of Investments July 31, 2019 (Unaudited) Principal Amount Value Long-Term Bonds 53.

September 27, 2019 NPORT-EX

Mainstay Funds NPORT-EX - -

MainStay Income Builder Fund Portfolio of Investments July 31, 2019 (Unaudited) Principal Amount Value Long-Term Bonds 53.

September 27, 2019 NPORT-EX

Mainstay Funds NPORT-EX - -

MainStay Income Builder Fund Portfolio of Investments July 31, 2019 (Unaudited) Principal Amount Value Long-Term Bonds 53.

September 27, 2019 NPORT-EX

Mainstay Funds NPORT-EX - -

MainStay Income Builder Fund Portfolio of Investments July 31, 2019 (Unaudited) Principal Amount Value Long-Term Bonds 53.

September 27, 2019 NPORT-EX

Mainstay Funds NPORT-EX - -

MainStay Income Builder Fund Portfolio of Investments July 31, 2019 (Unaudited) Principal Amount Value Long-Term Bonds 53.

September 27, 2019 NPORT-EX

Mainstay Funds NPORT-EX - -

MainStay Income Builder Fund Portfolio of Investments July 31, 2019 (Unaudited) Principal Amount Value Long-Term Bonds 53.

September 27, 2019 NPORT-EX

Mainstay Funds NPORT-EX - -

MainStay Income Builder Fund Portfolio of Investments July 31, 2019 (Unaudited) Principal Amount Value Long-Term Bonds 53.

September 27, 2019 NPORT-EX

Mainstay Funds NPORT-EX - -

MainStay Income Builder Fund Portfolio of Investments July 31, 2019 (Unaudited) Principal Amount Value Long-Term Bonds 53.

August 12, 2019 CORRESP

Mainstay Funds CORRESP - -

MAINSTAY GROUP OF FUNDS 51 Madison Avenue New York, NY 10010 August 12, 2019 VIA EDGAR Ms.

June 21, 2019 COVER

MAINSTAY FUNDS 51 MADISON AVENUE NEW YORK, NY 10010

MAINSTAY FUNDS 51 MADISON AVENUE NEW YORK, NY 10010 June 21, 2019 VIA EDGAR U.S. Securities and Exchange Commission Division of Investment Management 100 F Street, N.E. Washington, D.C. 20549 Re: MainStay Funds (the ?Registrant?); File Nos. 033-02610; 811-04550 Dear Sir/Madam: On June 21, 2019, we electronically transmitted for filing pursuant to Rule 485(a) under the Securities Act of 1933, as am

May 10, 2019 DEFA14A

Mainstay Funds DEFA14A DEFA14A

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant [x] Filed by a Party other than the Registrant [ ] Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Definitive Proxy Statement x Definitive Additional Materials ¨ Soliciting Material Under Rule 14a-12 THE MAINSTAY FUNDS (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): x No fee required.

May 1, 2019 DEFA14A

Mainstay Funds DEFA14A DEFA14A

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant [x] Filed by a Party other than the Registrant [ ] Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Definitive Proxy Statement x Definitive Additional Materials ¨ Soliciting Material Under Rule 14a-12 THE MAINSTAY FUNDS (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): x No fee required.

April 11, 2019 DEFR14A

Mainstay Funds DEFR14A

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) x Definitive Proxy Statement ¨ Definitive Additional Materials ¨ Soliciting Material Under Rule 14a-12 THE MAINSTAY FUNDS (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): x No fee required.

April 9, 2019 DEF 14A

Mainstay Funds DEF 14A

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) x Definitive Proxy Statement ¨ Definitive Additional Materials ¨ Soliciting Material Under Rule 14a-12 THE MAINSTAY FUNDS (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): x No fee required.

April 5, 2019 CORRESP

Mainstay Funds CORRESP - -

THE MAINSTAY FUNDS 51 Madison Avenue New York, NY 10010 VIA EDGAR CORRESPONDENCE April 5, 2019 Mr.

March 25, 2019 EX-99.CERT

CERTIFICATION

[EX-99.CERT] CERTIFICATION I, Kirk C. Lehneis, President and Principal Executive Officer of The MainStay Funds, certify that: 1. I have reviewed this report on Form N-Q of The MainStay Funds; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which

March 25, 2019 N-Q

Mainstay Funds N-Q (Quarterly Schedule of Portfolio Holdings)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-04550 The MainStay Funds (Exact name of registrant as specified in charter) 51 Madison Avenue, New York, New York 10010 (Address of principal executive offices) (Zip Code) J.

March 15, 2019 PRE 14A

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: x Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Definitive Proxy Statement ¨ Definitive Additional Materials ¨ Soliciting Material Under Rule 14a-12 THE MAINSTAY FUNDS (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): x No fee required.

March 15, 2019 COVER

THE MAINSTAY FUNDS 51 Madison Avenue New York, NY 10010

THE MAINSTAY FUNDS 51 Madison Avenue New York, NY 10010 March 15, 2019 VIA EDGAR Filing Desk Securities and Exchange Commission 100 F Street, N.

February 13, 2019 CORRESP

Mainstay Funds

MAINSTAY GROUP OF FUNDS 51 Madison Avenue New York, NY 10010 February 13, 2019 VIA EDGAR Ms.

January 15, 2019 NT-NCEN

Mainstay Funds NT-NCEN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SEC FILE NUMBER 811-04550 FORM 12b-25 NOTIFICATION OF LATE FILING (Check one): [ ] Form 10-K [ ] Form 20-F [ ] Form 11-K [ ] Form 10-Q [ ] Form 10-D [X] Form N-CEN [ ] Form N-CSR For Period Ended: October 31, 2018 [ ] Transition Report on Form 10-K [ ] Transition Report on Form 20-F [ ] Transition Report on Form 11-K [ ] Trans

December 14, 2018 COVER

MAINSTAY FUNDS 51 MADISON AVENUE NEW YORK, NY 10010

MAINSTAY FUNDS 51 MADISON AVENUE NEW YORK, NY 10010 December 14, 2018 VIA EDGAR Securities and Exchange Commission Division of Investment Management 100 F Street, N.

October 22, 2018 EX-99.(H)(1)(A)(XX)

Amendment dated May 22, 2018 – Previously filed as Exhibit (h)(1)(a)(xx) to Post-Effective Amendment No. 141 on October 22, 2018*

Exhibit (h)(1)(a)(xx) AMENDMENT TO AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT This Amendment to the Amended and Restated Transfer Agency and Service Agreement (“Amendment”) is effective as of the 22nd day of May, 2018, by and among The MainStay Funds, a Massachusetts business trust, and MainStay VP Funds Trust and MainStay Funds Trust, each a Delaware statutory trust (each, a “Fund” and collectively, the “Funds”) and NYLIM Service Company LLC, a Delaware limited liability company, having its principal office and place of business at 30 Hudson Street, Jersey City, New Jersey 07302 (“NSC”).

October 22, 2018 EX-99.(H)(1)(A)(XXI)

Amendment dated July 2, 2018 – Previously filed as Exhibit (h)(1)(a)(xxi) to Post-Effective Amendment No. 141 on October 22, 2018*

Exhibit (h)(1)(a)(xxi) AMENDMENT TO AMENDED AND RESTATED TRANSFER AGENCY AND SERVICE AGREEMENT This Amendment to the Amended and Restated Transfer Agency and Service Agreement (“Amendment”) is effective as of the 2nd day of July, 2018, by and among The MainStay Funds, a Massachusetts business trust, and MainStay VP Funds Trust and MainStay Funds Trust, each a Delaware statutory trust (each, a “Fund” and collectively, the “Funds”) and NYLIM Service Company LLC, a Delaware limited liability company, having its principal office and place of business at 30 Hudson Street, Jersey City, New Jersey 07302 (“NSC”).

October 22, 2018 EX-99.(D)(2)(A)(II)

Amendment dated May 1, 2018 — Previously filed as Exhibit (d)(2)(a)(ii) to Post-Effective Amendment No. 141 on October 22, 2018*

Exhibit (d)(2)(a)(ii) THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amendment to the Amended and Restated Subadvisory Agreement, is made as of the 1st day of May, 2018, between New York Life Investment Management LLC, a Delaware limited liability company (the “Manager”) and MacKay Shields LLC, a Delaware limited liability company (the “Subadvisor”).

October 22, 2018 EX-99.(H)(7)(A)

Amended and Restated Expense Limitation Agreement dated May 22, 2018

EX-99.(H)(7)(A) 14 tv501810ex99-h7a.htm AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT Exhibit (h)(7)(a) AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT THIS AMENDED AND RESTATED EXPENSE LIMITATION AGREEMENT, is hereby made as of May 22, 2018, between The MainStay Funds and MainStay Funds Trust (each a “Trust” and collectively, the “Trusts”), on behalf of each series of the Trusts as set fort

October 22, 2018 EX-99.(D)(2)(A)(III)

Amendment dated May 22, 2018 — Previously filed as Exhibit (d)(2)(a)(iii) to Post-Effective Amendment No. 141 on October 22, 2018*

Exhibit (d)(2)(a)(iii) THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST AMENDMENT TO AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amendment to the Amended and Restated Subadvisory Agreement, is made as of the 22nd day of May, 2018, between New York Life Investment Management LLC, a Delaware limited liability company (the “Manager”) and MacKay Shields LLC, a Delaware limited liability company (the “Subadvisor”).

October 22, 2018 POS EX

Mainstay Funds POS EX

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON OCTOBER 22, 2018 FILE NO. 033-02610 FILE NO. 811-04550 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM N-1A REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 þ Post-Effective Amendment No. 141 AND REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 þ Amendment No. 144 THE MAINSTAY FUNDS (exact na

October 22, 2018 EX-99.(G)(1)(Q)

Amendment dated May 22, 2018 – Previously filed as Exhibit (g)(1)(q) to Post-Effective Amendment No. 141 on October 22, 2018*

Exhibit g 1 q MAINSTAY GROUP OF FUNDS May 22, 2018 State Street Bank and Trust Company 1 Iron Street Boston, MA 02210 Attention: MainStay Group of Funds Client Manager Re: Amended and Restated Master Custodian Agreement (the “Agreement”) Ladies and Gentlemen: Please be advised of the following changes to the MainStay Group of Funds.

October 22, 2018 EX-99.(G)(1)(S)

Amendment dated September 10, 2018 – Previously filed as Exhibit (g)(1)(s) to Post-Effective Amendment No. 141 on October 22, 2018*

Exhibit g 1 s Mainstay VP Funds Trust August 17, 2018 State Street Bank and Trust Company 1 Iron Street Boston, MA 02210 Attention: MainStay Group of Funds Client Manager Re: MainStay VP Funds Trust (the “Fund”) Ladies and Gentlemen: Please be advised that the undersigned Fund has established a new series of shares to be known as the MainStay VP IQ Hedge Multi-Strategy Portfolio effective September 10, 2018.

October 22, 2018 EX-99.(G)(2)(Q)

Amendment dated July 2, 2018 – Previously filed as Exhibit (g)(2)(q) to Post-Effective Amendment No. 141 on October 22, 2018*

Exhibit g 2 q MainStay Funds Trust July 2, 2018 State Street Bank and Trust Company 1 Iron Street Boston, MA 02210 Attention: MainStay Group of Funds Client Manager Re: MainStay Funds Trust (the “Fund”) Ladies and Gentlemen: Please be advised that the undersigned Fund has established a new series of shares to be known as the MainStay U.

October 22, 2018 EX-99.(G)(2)(R)

Amendment dated September 10, 2018 – Previously filed as Exhibit (g)(2)(r) to Post-Effective Amendment No. 141 on October 22, 2018*

Exhibit g 2 r MAINSTAY VP FUNDS TRUST August 17, 2018 State Street Bank and Trust Company 1 Iron Street Boston, MA 02210 Attention: MainStay Group of Funds Client Manager Re: MainStay VP Funds Trust (the “Fund”) Ladies and Gentlemen: Please be advised that the undersigned Fund has established a new series of shares to be known as the MainStay VP IQ Hedge Multi-Strategy Portfolio effective September 10, 2018.

October 22, 2018 EX-99.(G)(2)(O)

Amendment dated February 28, 2018 – Previously filed as Exhibit (g)(2)(o) to Post-Effective Amendment No. 141 on October 22, 2018*

Exhibit g 2 o Mainstay Group of Funds February 16, 2018 State Street Bank and Trust Company 1 Iron Street Boston, MA 02110 Attention: MainStay Group of Funds Client Manager Re: Amended and Restated Master Delegation Agreement (the “Agreement”) Ladies and Gentlemen: Please be advised of the following changes to the MainStay Group of Funds.

October 22, 2018 EX-99.(G)(1)(R)

Amendment dated July 2, 2018 – Previously filed as Exhibit (g)(1)(r) to Post-Effective Amendment No. 141 on October 22, 2018*

Exhibit g 1 r Mainstay Funds Trust July 2, 2018 State Street Bank and Trust Company 1 Iron Street Boston, MA 02210 Attention: MainStay Group of Funds Client Manager Re: MainStay Funds Trust (the “Fund”) Ladies and Gentlemen: Please be advised that the undersigned Fund has established a new series of shares to be known as the MainStay U.

October 22, 2018 EX-99.(G)(2)(P)

Amendment dated May 22, 2018 – Previously filed as Exhibit (g)(2)(p) to Post-Effective Amendment No. 141 on October 22, 2018*

Exhibit g 2 p MAINSTAY FUNDS TRUST May 22, 2018 State Street Bank and Trust Company 1 Iron Street Boston, MA 02210 Attention: MainStay Group of Funds Client Manager Re: Amended and Restated Master Delegation Agreement (the “Agreement”) Ladies and Gentlemen: Please be advised of the following changes to the MainStay Group of Funds.

October 22, 2018 EX-99.(G)(1)(P)

Amendment dated February 28, 2018 – Previously filed as Exhibit (g)(1)(p) to Post-Effective Amendment No. 141 on October 22, 2018*

Exhibit g 1 p Mainstay Group of Funds February 16, 2018 State Street Bank and Trust Company 1 Iron Street Boston, MA 02110 Attention: MainStay Group of Funds Client Manager Re: Amended and Restated Master Custodian Agreement (the “Agreement”) Ladies and Gentlemen: Please be advised of the following changes to the MainStay Group of Funds.

September 25, 2018 N-Q

Mainstay Funds N-Q (Quarterly Schedule of Portfolio Holdings)

N-Q 1 tv502539nq.htm N-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-04550 The MainStay Funds (Exact name of registrant as specified in charter) 51 Madison Avenue, New York, New York 10010 (Address of principal executive offices) (Zip Code)

September 25, 2018 EX-99.CERT

CERTIFICATION

[EX-99.CERT] CERTIFICATION I, Kirk C. Lehneis, President and Principal Executive Officer of The MainStay Funds, certify that: 1. I have reviewed this report on Form N-Q of The MainStay Funds; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which

March 29, 2018 N-Q

Mainstay Funds N-Q (Quarterly Schedule of Portfolio Holdings)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-04550 The MainStay Funds (Exact name of registrant as specified in charter) 51 Madison Avenue, New York, New York 10010 (Address of principal executive offices) (Zip Code) J.

March 29, 2018 EX-99.CERT

CERTIFICATION

[EX-99.CERT] CERTIFICATION I, Kirk C. Lehneis, President and Principal Executive Officer of The MainStay Funds, certify that: 1. I have reviewed this report on Form N-Q of The MainStay Funds; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which

February 21, 2018 CORRESP

Mainstay Funds CORRESP

MAINSTAY GROUP OF FUNDS 51 Madison Avenue New York, NY 10010 February 21, 2018 VIA EDGAR Mr.

December 22, 2017 CORRESP

MAINSTAY FUNDS TRUST THE MAINSTAY FUNDS 51 MADISON AVENUE NEW YORK, NY 10010 December 21, 2017

MAINSTAY FUNDS TRUST THE MAINSTAY FUNDS 51 MADISON AVENUE NEW YORK, NY 10010 December 21, 2017 VIA EDGAR Securities and Exchange Commission Division of Investment Management 100 F Street, N.

September 28, 2017 N-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-04550 The MainStay Funds (Exact name of registrant as specified in charter) 51 Madison Avenue, New York, New York 10010 (Address of principal executive offices) (Zip Code) J.

September 28, 2017 EX-99.CERT

CERTIFICATION

[EX-99.CERT] CERTIFICATION I, Kirk C. Lehneis, President and Principal Executive Officer of The MainStay Funds, certify that: 1. I have reviewed this report on Form N-Q of The MainStay Funds; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which

September 15, 2017 DEFA14A

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant [x] Filed by a Party other than the Registrant [ ]

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant [x] Filed by a Party other than the Registrant [ ] Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Definitive Proxy Statement x Definitive Additional Materials ¨ Soliciting Material Under Rule 14a-12 THE MAINSTAY FUNDS (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): x No fee required.

September 8, 2017 DEF 14A

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant [x] Filed by a Party other than the Registrant [ ]

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant [x] Filed by a Party other than the Registrant [ ] Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) x Definitive Proxy Statement ¨ Definitive Additional Materials ¨ Soliciting Material Under Rule 14a-12 THE MAINSTAY FUNDS (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): x No fee required.

August 10, 2017 EX-99.(A)(35)

Establishment and Designation of Class of Shares of Beneficial Interest, Par Value $0.01 Per Share (Class T) — Previously filed as Exhibit (a)(35) to Post-Effective Amendment No. 137 on August 10, 2017*

Exhibit (a)(35) THE MAINSTAY FUNDS Establishment and Designation of Class of Shares of Beneficial Interest, Par Value $0.

August 10, 2017 EX-99.(D)(2)(A)(V)

THE MAINSTAY FUNDS AMENDMENT TO THE AMENDED AND RESTATED SUBADVISORY AGREEMENT

Exhibit (d)(2)(a)(v) THE MAINSTAY FUNDS AMENDMENT TO THE AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amendment to the Amended and Restated Subadvisory Agreement, is effective as of the 27th day of February 2015, between New York Life Investment Management LLC (the ?Manager?) and MacKay Shields LLC (the ?Subadvisor?).

August 10, 2017 EX-99.(D)(2)(A)(VI)

THE MAINSTAY FUNDS AMENDMENT TO THE AMENDED AND RESTATED SUBADVISORY AGREEMENT

EX-99.(D)(2)(A)(VI) 6 v472579ex99-d2avi.htm AMENDMENT TO THE SUBADVISORY AGREEMENT Exhibit (d)(2)(a)(vi) THE MAINSTAY FUNDS AMENDMENT TO THE AMENDED AND RESTATED SUBADVISORY AGREEMENT This Amendment to the Amended and Restated Subadvisory Agreement, is effective as of the 28th day of February 2017, between New York Life Investment Management LLC (the “Manager”) and MacKay Shields LLC (the “Subadvi

August 10, 2017 EX-99.(A)(34)

Redesignation of Series of Shares of Beneficial Interest, Par Value $0.01 Per Share (Global High Income and MAP) — Previously filed as Exhibit (a)(34) to Post-Effective Amendment No. 137 on August 10, 2017*

Exhibit (a)(34) The MainStay Funds MainStay Global High Income Fund MainStay MAP Fund Redesignation of Series of Shares of Beneficial Interest, Par Value $0.

August 10, 2017 EX-99.(D)(1)(A)

THE MainSTay Funds AMENDMENT TO THE AMENDED AND RESTATED MANAGEMENT AGREEMENT

Exhibit (d)(1)(a) THE MainSTay Funds AMENDMENT TO THE AMENDED AND RESTATED MANAGEMENT AGREEMENT This Amendment to the Amended and Restated Management Agreement is hereby made as of the 28th day of February, 2017, between The MainStay Funds, a Massachusetts business trust (the ?Trust?), on behalf of its series as set forth on Schedule A (each, a ?Fund,? and collectively, the ?Funds?) and New York Life Investment Management LLC, a Delaware limited liability company (the ?Manager?).

August 10, 2017 EX-99.(P)(5)

Nuveen Investments Compliance  | September 2016

Exhibit (p)(5) Nuveen Investments Compliance? | September 2016 Code of Ethics Summary and Scope What the Code is about Helping to ensure that Nuveen Investments personnel place the interests of Nuveen clients ahead of their own personal interests.

August 10, 2017 POS EX

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON AUGUST 10, 2017

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON AUGUST 10, 2017 FILE NO. 033-02610 FILE NO. 811-04550 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM N-1A REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ? Post-Effective Amendment No. 137 AND REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 ? Amendment No. 140 THE MAINSTAY FUNDS (exact nam

August 10, 2017 EX-99.(D)(2)(H)(I)

THE MAINSTAY FUNDS

Exhibit (d)(2)(h)(i) THE MAINSTAY FUNDS This Amendment to the Subadvisory Agreement, is made as of the 28th day of February, 2017, between New York Life Investment Management LLC, a Delaware limited liability company (the ?Manager?) and NYL Investors LLC, a Delaware corporation (the ?Subadvisor?).

June 30, 2017 EX-99.77E LEGAL

EX-99.77E LEGAL

FORM N-SAR Exhibit 77E THE MAINSTAY FUNDS 811-04550 For Period Ended 4/30/17 On December 23, 2014, Cynthia Ann Redus-Tarchis and others filed a complaint against New York Life Investments in the United States District Court for the District of New Jersey.

June 30, 2017 EX-99.77Q1 OTHR EXHB

EX-99.77Q1 OTHR EXHB

Signature Page The following form of signature shall follow items 79, 85, 88, 104, 110 or 132 as appropriate.

June 30, 2017 EX-99.77C VOTES

EX-99.77C VOTES

Form N-SAR Attachment for Item #77C Matters Submitted to a Vote of Security Holders THE MAINSTAY FUNDS 811-04550 For Period Ended 4/30/17 MAINSTAY MAP EQUITY FUND a series of The MainStay Funds (a) The date of the meeting and whether it was an annual or special meeting; Pursuant to notice, a special meeting of shareholders ("Special Meeting") of the MainStay MAP Fund ("Fund") , a series of The MainStay Funds, was held at the offices of New York Life Investment Management, Inc.

March 30, 2017 EX-99.CERT

CERTIFICATION

Exhibit 99.CERT CERTIFICATION I, Stephen P. Fisher, President and Principal Executive Officer of The MainStay Funds, certify that: 1. I have reviewed this report on Form N-Q of The MainStay Funds; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under

March 30, 2017 N-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-04550 The MainStay Funds (Exact name of registr

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-04550 The MainStay Funds (Exact name of registrant as specified in charter) 51 Madison Avenue, New York, New York 10010 (Address of principal executive offices) (Zip Code) J.

February 28, 2017 CORRESP

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST 51 Madison Avenue New York, NY 10010

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST 51 Madison Avenue New York, NY 10010 VIA EDGAR CORRESPONDENCE February 28, 2017 Mr.

February 8, 2017 DEFA14A

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Definitive Proxy Statement x Definitive Additional Materials ¨ Soliciting Material Under Rule 14a-12 THE MAINSTAY FUNDS (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): x No fee required.

February 3, 2017 DEFA14A

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Definitive Proxy Statement x Definitive Additional Materials ¨ Soliciting Material Under Rule 14a-12 THE MAINSTAY FUNDS (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): x No fee required.

January 27, 2017 CORRESP

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST 51 Madison Avenue New York, NY 10010

THE MAINSTAY FUNDS MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST 51 Madison Avenue New York, NY 10010 VIA EDGAR CORRESPONDENCE January 27, 2017 Mr.

January 27, 2017 DEF 14A

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) x Definitive Proxy Statement ¨ Definitive Additional Materials ¨ Soliciting Material Under Rule 14a-12 THE MAINSTAY FUNDS (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): x No fee required.

January 10, 2017 COVER

MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST THE MAINSTAY FUNDS 51 Madison Avenue New York, NY 10010

MAINSTAY FUNDS TRUST MAINSTAY VP FUNDS TRUST THE MAINSTAY FUNDS 51 Madison Avenue New York, NY 10010 January 10, 2017 VIA EDGAR Filing Desk Securities and Exchange Commission 100 F Street, N.

January 10, 2017 PRE 14A

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN A PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant x Filed by a Party other than the Registrant ? Check the appropriate box: x Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy Statement ? Definitive Additional Materials ? Soliciting Material Under Rule 14a-12 THE MAINSTAY FUNDS (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): x No fee required.

December 27, 2016 CORRESP

MAINSTAY FUNDS MAINSTAY FUNDS TRUST 51 Madison Avenue New York, NY 10010

MAINSTAY FUNDS MAINSTAY FUNDS TRUST 51 Madison Avenue New York, NY 10010 VIA EDGAR CORRESPONDENCE December 27, 2016 Mr.

December 22, 2016 COVER

THE MAINSTAY FUNDS 51 MADISON AVENUE NEW YORK, NY 10010

THE MAINSTAY FUNDS 51 MADISON AVENUE NEW YORK, NY 10010 December 21, 2016 Via EDGAR Filing Desk Securities and Exchange Commission Office of Filings and Information Services Branch of Registrations and Examinations Mail Stop 0-25 100 F Street, NE Washington, DC 20549 Re: The MainStay Funds (“Registrant”) File Nos.

December 21, 2016 CORRESP

MAINSTAY FUNDS MAINSTAY FUNDS TRUST 51 Madison Avenue New York, NY 10010

MAINSTAY FUNDS MAINSTAY FUNDS TRUST 51 Madison Avenue New York, NY 10010 VIA EDGAR CORRESPONDENCE December 21, 2016 Mr.

December 21, 2016 EX-99.J.1

Consent of Independent Registered Public Accounting Firm

Exhibit j.1 Consent of Independent Registered Public Accounting Firm The Board of Trustees of The MainStay Funds and MainStay Funds Trust: We consent to the use of our reports dated December 23, 2015, with respect to the financial statements of the MainStay High Yield Corporate Bond Fund (a series of The MainStay Funds) and the MainStay High Yield Opportunities Fund (a series of MainStay Funds Tru

December 21, 2016 N-14/A

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 21, 2016

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 21, 2016 SECURITIES ACT FILE NO.

December 21, 2016 EX-99.I.1

1900 K Street, N.W.

Exhibit i.1 1900 K Street, N.W. Washington, DC 20006-1110 +1 202 261 3300 Main +1 202 261 3333 Fax www.dechert.com December 21, 2016 Board of Trustees, The MainStay Funds 51 Madison Avenue New York, NY 10010 Re: Registration Statement on Form N-14 (MainStay High Yield Corporate Bond Fund, a series of The MainStay Funds) Ladies and Gentlemen: We have acted as counsel for The MainStay Funds (the ?Tr

November 23, 2016 DEL AM

November 23, 2016

November 23, 2016 VIA EDGAR U.S. Securities and Exchange Commission Division of Investment Management 100 F Street, NE Washington, DC 20549 Attn: Patrick F. Scott Re: Delaying Amendment for The MainStay Funds on behalf of MainStay High Yield Corporate Bond Fund Registration Statement on Form N-14 (File No. 333-214498) Ladies and Gentlemen: Pursuant to Rule 473 under the Securities Act of 1933, as

November 8, 2016 COVER

THE MAINSTAY FUNDS MAINSTAY HIGH CORPORATE BOND FUND 51 Madison Avenue New York, NY 10010

THE MAINSTAY FUNDS MAINSTAY HIGH CORPORATE BOND FUND 51 Madison Avenue New York, NY 10010 November 8, 2016 VIA EDGAR Filing Desk Securities and Exchange Commission 100 F Street, N.

November 8, 2016 N-14

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON NOVEMBER 8, 2016

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON NOVEMBER 8, 2016 SECURITIES ACT FILE NO.

November 8, 2016 EX-99.J.1

Consent of Independent Registered Public Accounting Firm

EX-99.J.1 3 v452256ex99-j1.htm CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM Exhibit j.1 Consent of Independent Registered Public Accounting Firm The Board of Trustees of The MainStay Funds and MainStay Funds Trust: We consent to the use of our report dated December 23, 2015, with respect to the financial statements of the MainStay High Yield Corporate Bond Fund (a series of The MainSta

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