MAINSTAY FUNDS TRUST
51 Madison Avenue
New York, NY 10010
September 27, 2012
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: | MainStay Funds Trust |
| MainStay Epoch U.S. Equity Yield Fund | |
| File Nos. 333-160918 and 811-22321 |
Dear Sir or Madam:
On behalf of the registrant listed above and pursuant to Rule 497(c) under the Securities Act of 1933, as amended, attached for filing are exhibits containing interactive data format risk/return summary information that reflects the risk/return summary information in a supplement, dated September 17, 2012 to the Prospectus and Summary Prospectus for the MainStay Epoch U.S. Equity Yield Fund (Accession Number 0001144204-12-051585). The purpose of this filing is to submit an XBRL interactive data file in the manner provided by Rule 405 of Regulation S-T and General Instruction C.3.(g) of Form N-1A.
Any questions or comments on the filing should be directed to the undersigned at (973) 394-4505.
Sincerely,
/s/ Thomas C. Humbert
Thomas C. Humbert
Assistant Secretary
| MainStay Epoch U.S. Equity Yield Fund (Prospectus Summary): | MainStay Epoch U.S. Equity Yield Fund |
| MainStay Epoch U.S. Equity Yield Fund |
THE MAINSTAY GROUP OF FUNDS
MainStay Epoch U.S. Equity Yield Fund
Supplement dated September 17, 2012 (“Supplement”) to the Summary Prospectus and Prospectus, each dated February 28, 2012
This Supplement updates certain information contained in the Summary Prospectus and Prospectus for MainStay Epoch U.S. Equity Yield Fund (the “Fund”), a series of MainStay Funds Trust. You may obtain copies of the Fund’s Summary Prospectus, Prospectus and Statement of Additional Information free of charge, upon request, by calling toll-free 800-MAINSTAY (624-6782), or by writing to NYLIFE Distributors LLC, Attn: MainStay Marketing Department, 169 Lackawanna Avenue, Parsippany, New Jersey 07054. These documents are also available on the Fund’s website at mainstayinvestments.com. Please review this important information carefully.
Effective September 17, 2012, the section entitled “Past Performance” is revised to indicate that the Fund has removed the Russell 3000® Index as its secondary benchmark. |
PLEASE RETAIN THIS SUPPLEMENT FOR YOUR FUTURE REFERENCE.
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| Label | Element | Value |
|---|---|---|
| Risk/Return: | rr_RiskReturnAbstract | |
| Prospectus Date | rr_ProspectusDate | Feb. 28, 2012 |
|
MainStay Epoch U.S. Equity Yield Fund (Prospectus Summary): | MainStay Epoch U.S. Equity Yield Fund
|
||
| Risk/Return: | rr_RiskReturnAbstract | |
| Risk/Return, Heading | rr_RiskReturnHeading | MainStay Epoch U.S. Equity Yield Fund |
| Supplement Text | ck0001469192_SupplementTextBlock | THE MAINSTAY GROUP OF FUNDS
MainStay Epoch U.S. Equity Yield Fund
Supplement dated September 17, 2012 (“Supplement”) to the Summary Prospectus and Prospectus, each dated February 28, 2012
This Supplement updates certain information contained in the Summary Prospectus and Prospectus for MainStay Epoch U.S. Equity Yield Fund (the “Fund”), a series of MainStay Funds Trust. You may obtain copies of the Fund’s Summary Prospectus, Prospectus and Statement of Additional Information free of charge, upon request, by calling toll-free 800-MAINSTAY (624-6782), or by writing to NYLIFE Distributors LLC, Attn: MainStay Marketing Department, 169 Lackawanna Avenue, Parsippany, New Jersey 07054. These documents are also available on the Fund’s website at mainstayinvestments.com. Please review this important information carefully.
Effective September 17, 2012, the section entitled “Past Performance” is revised to indicate that the Fund has removed the Russell 3000® Index as its secondary benchmark. |
| Performance, Availability Phone Number | rr_PerformanceAvailabilityPhone | 800-MAINSTAY (624-6782) |
| Performance, Availability Website Address | rr_PerformanceAvailabilityWebSiteAddress | mainstayinvestments.com |
| Supplement Closing | ck0001469192_SupplementClosingTextBlock | PLEASE RETAIN THIS SUPPLEMENT FOR YOUR FUTURE REFERENCE.
|
| Label | Element | Value |
|---|---|---|
| Risk/Return: | rr_RiskReturnAbstract | |
| Document Type | dei_DocumentType | Other |
| Document Period End Date | dei_DocumentPeriodEndDate | Sep. 17, 2012 |
| Registrant Name | dei_EntityRegistrantName | MAINSTAY FUNDS TRUST |
| Central Index Key | dei_EntityCentralIndexKey | 0001469192 |
| Amendment Flag | dei_AmendmentFlag | false |
| Document Creation Date | dei_DocumentCreationDate | Sep. 14, 2012 |
| Document Effective Date | dei_DocumentEffectiveDate | Sep. 17, 2012 |
| Prospectus Date | rr_ProspectusDate | Feb. 28, 2012 |