0000950170-24-035831.txt : 20240325 0000950170-24-035831.hdr.sgml : 20240325 20240325142232 ACCESSION NUMBER: 0000950170-24-035831 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240325 FILED AS OF DATE: 20240325 DATE AS OF CHANGE: 20240325 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: NEW YORK LIFE INVESTMENT MANAGEMENT LLC CENTRAL INDEX KEY: 0001133639 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 811-23905 FILM NUMBER: 24778603 BUSINESS ADDRESS: STREET 1: 51 MADISON AVE CITY: NEW YORK STATE: NY ZIP: 10010 BUSINESS PHONE: 2125767000 MAIL ADDRESS: STREET 1: 51 MADISON AVE CITY: NEW YORK STATE: NY ZIP: 10010 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: MainStay MacKay Municipal Income Opportunities Fund CENTRAL INDEX KEY: 0001995668 ORGANIZATION NAME: IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1031 BUSINESS ADDRESS: STREET 1: 51 MADISON AVENUE CITY: NEW YORK STATE: NY ZIP: 10010 BUSINESS PHONE: 212-576-7000 MAIL ADDRESS: STREET 1: 51 MADISON AVENUE CITY: NEW YORK STATE: NY ZIP: 10010 4 1 ownership.xml 4 X0508 4 2024-03-25 0001995668 MainStay MacKay Municipal Income Opportunities Fund MMIPX 0001133639 NEW YORK LIFE INVESTMENT MANAGEMENT LLC 51 MADISON AVENUE, 16TH FLOOR NEW YORK NY 10010 false false false true Investment Manager false Class A1 Shares 2024-03-25 4 P false 2500 10 A 2500 D /s/ Kirk C. Lehneis, Chief Operating Officer 2024-03-25