# EDGAR Filing Document

**Accession Number:** 0001469192
**File Stem:** 0001193125-25-191316
**Filing Date:** 2025-8
**Character Count:** 5204
**Document Hash:** bdbe6ac3dab683b2798e89687a0be5c2
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-191316.hdr.sgml**: 20250828

**ACCESSION NUMBER**: 0001193125-25-191316

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 14

**FILED AS OF DATE**: 20250828

**DATE AS OF CHANGE**: 20250828

**EFFECTIVENESS DATE**: 20250828

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NEW YORK LIFE INVESTMENTS FUNDS TRUST
- **CENTRAL INDEX KEY:** 0001469192

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

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-160918
- **FILM NUMBER:** 251274483

**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 FUNDS TRUST
- **DATE OF NAME CHANGE:** 20090728

## Series and Classes Contracts Data

### NYLI MacKay Short Duration High Income Fund (Series ID: S000039301)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| Class A        | MDHAX         | C000121097 |
| Class C        | MDHCX         | C000121098 |
| Class I        | MDHIX         | C000121099 |
| Investor Class | MDHVX         | C000121101 |

---

## Series and Classes Contracts Data

### NYLI MacKay Short Duration High Income Fund (Series ID: S000039301)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000121097 | Class A        | MDHAX           |
| C000121098 | Class C        | MDHCX           |
| C000121099 | Class I        | MDHIX           |
| C000121101 | Investor Class | MDHVX           |

?xml version='1.0' encoding='ASCII'? NEW YORK LIFE INVESTMENTS FUNDS TRUST

------

#### NEW YORK LIFE INVESTMENTS FUNDS TRUST

#### NYLI MacKay Short Duration High Income Fund

#### (the "Fund")
Supplement dated August 28, 2025 ("Supplement")

to the Prospectus and Summary Prospectus, each dated February 28, 2025, as supplemented

*Capitalized terms and certain other terms used in this Supplement, unless otherwise defined in this* 

*Supplement, have the meanings assigned to them in the Prospectus and Summary Prospectus.* 

Effective immediately, the table in the section entitled "**Fees and Expenses of the Fund**" in the Fund's Prospectus and Summary Prospectus is deleted in its entirety and replaced as follows:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | Class A | Investor Class | Class C | Class I |
|  Shareholder Fees (fees paid directly from your investment) |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price) | 3.00% | 2.50% |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Maximum Deferred Sales Charge (Load) (as a percentage of the lesser of the original offering price or redemption proceeds) | None<sup>1</sup> | None<sup>1</sup> | 1.00% |  |
| Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Management Fees (as an annual percentage of the Fund's average daily net assets) | 0.65% | 0.65% | 0.65% | 0.65% |
| &nbsp;&nbsp;&nbsp;&nbsp; Distribution and/or Service (12b-1) Fees | 0.25% | 0.25% | 1.00% |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Other Expenses | 0.15% | 0.17% | 0.17% | 0.15% |
| &nbsp;&nbsp;&nbsp;&nbsp; Total Annual Fund Operating Expenses | 1.05% | 1.07% | 1.82% | 0.80% |
| &nbsp;&nbsp;&nbsp;&nbsp; Waivers / Reimbursements<sup>2</sup> | (0.03)% | 0.00% | 0.00% | (0.02)% |
| &nbsp;&nbsp;&nbsp;&nbsp; Total Annual Fund Operating Expenses After Waivers / Reimbursements<sup>2</sup> | 1.02% | 1.07% | 1.82% | 0.78% |

---

1. No initial sales charge applies on investments of $250,000 or more (and certain other qualified purchases referenced within "Information on Sales Charges" in the Shareholder Guide). However, a contingent deferred sales charge of 1.00% may be imposed on certain redemptions made within 18 months of the date of purchase on shares that were purchased without an initial sales charge. For more information on contingent deferred sales charges, see "Sales Charges" in the Shareholder Guide.

2. New York Life Investment Management LLC ("New York Life Investments") has contractually agreed to waive fees and/or reimburse expenses so that Total Annual Fund Operating Expenses (excluding taxes, interest, litigation, extraordinary expenses, brokerage and other transaction expenses relating to the purchase or sale of portfolio investments, and acquired (underlying) fund fees and expenses) do not exceed the following percentages of its average daily net assets: Class A, 1.02%; Investor Class, 1.13%; Class C, 1.88%; and Class I, 0.78%. This agreement will remain in effect until February 28, 2026, and thereafter shall renew automatically for one-year terms unless New York Life Investments provides written notice of termination prior to the start of the next term or, at any time, upon approval of the Board of Trustees of the Fund.

#### PLEASE RETAIN THIS SUPPLEMENT FOR YOUR FUTURE REFERENCE.