# EDGAR Filing Document

**Accession Number:** 0002137653
**File Stem:** 0001085146-26-000441
**Filing Date:** 2026-6
**Character Count:** 6299
**Document Hash:** 0859f0c371332abc049634ab63f660d1
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001085146-26-000441.hdr.sgml**: 20260608

**ACCESSION NUMBER**: 0001085146-26-000441

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260608

**DATE AS OF CHANGE**: 20260608

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NYLI MacKay Muni Income Opportunities Fund
- **CENTRAL INDEX KEY:** 0001995668

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-94490
- **FILM NUMBER:** 261072671

**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

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MainStay MacKay Municipal Income Opportunities Fund
- **DATE OF NAME CHANGE:** 20230929
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NYLIM Capital LLC
- **CENTRAL INDEX KEY:** 0002137653

**ORGANIZATION NAME:**
- **EIN:** 392948083
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D

**BUSINESS ADDRESS:**
- **STREET 1:** 51 MADISON AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10010
- **BUSINESS PHONE:** (212)-576-6600

**MAIL ADDRESS:**
- **STREET 1:** 51 MADISON AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10010

### Attached PDF Documents

**Attachment 1:** `nylimcapital_exhibita060526.pdf`

_No text found in this document._

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**NYLI MacKay Muni Income Opportunities Fund**

*(Name of Issuer)*

**Class I Common Shares**

*(Title of Class of Securities)*

**—**

*(CUSIP Number)*

**Kevin Bopp**<br>51 MADISON AVE<br>NEW YORK NY 10010<br>201-685-6187

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**05/01/2026**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**NYLIM Capital LLC** | Name of reporting person<br>**NYLIM Capital LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**5426013.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**5426013.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**5426013.00** | Aggregate amount beneficially owned by each reporting person<br>**5426013.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**80.9%** | Percent of class represented by amount in Row (11)<br>**80.9%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** This statement on Schedule 13D (the "Schedule 13D") relates to Class I common shares ("Class I Shares") of NYLI MacKay Municipal Income Opportunities Fund (the "Issuer" or "Fund"), a Delaware statutory trust registered under the Investment Company Act of 1940, as amended (the "Investment Company Act"), as a non-diversified, closed-end management investment company. The principal executive office of the Fund is located at 51 Madison Ave, New York, NY 10010.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Class I Common Shares

**(b) Name of Issuer:**
NYLI MacKay Muni Income Opportunities Fund

**(c) Address of Issuer's Principal Executive Offices:**
51 MADISON AVENUE, NEW YORK, NY, 10010

**Item 4. Purpose of Transaction**

The reported securities were acquired solely in connection with a reorganization to consolidate various seed capital holdings under a single legal entity to facilitate improved tracking and oversight of such seed capital investments.

**Item 5. Interest in Securities of the Issuer**

**(a)**
The aggregate number and percentage of the class of securities identified pursuant to Item 1 beneficially owned by the Reporting Person is stated in Items 11 and 13 on the cover page hereto.

**(b)**
The information set forth in Items 7 through 11 of the cover page hereto is incorporated herein by reference.

**(c)**
Except as disclosed in this Schedule 13D, the Reporting Person has not effected any transactions in Class I Shares of the Issuer during the past 60 days.

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

The relationship between NYLIM Capital LLC and New York Life Investment Management Holdings LLC is described in response to Item 2.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** NYLIM Capital LLC

**Signature:** /s/ Kirk Lehneis

**Name/Title:** Kirk Lehneis, Head of US Retail

**Date:** 06/08/2026