0001469192 2012-12-14 2012-12-14 0001469192 ck0001469192:P0001-S000028542Member ck0001469192:S000028542Member 2012-12-14 2012-12-14 Other 2012-12-14 MAINSTAY FUNDS TRUST 0001469192 false 2012-12-14 2012-12-14 2012-02-28 MainStay 130/30 International Fund   <p class="MsoNormal" align="center" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt; text-align:center;line-height:normal;text-autospace:none">  <p class="MsoNormal" align="center" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt; text-align:center;line-height:normal;text-autospace:none">THE MAINSTAY GROUP OF FUNDS <p class="MsoNormal" align="center" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt; text-align:center;line-height:normal;text-autospace:none">  <p class="MsoNormal" align="center" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt; text-align:center;line-height:normal;text-autospace:none">MainStay 130/30 International Fund <p class="MsoNormal" align="center" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt; text-align:center;line-height:normal;text-autospace:none">  <p class="MsoNormal" align="center" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt; text-align:center;line-height:normal;text-autospace:none">Supplement dated December 14, 2012 (“Supplement”) to the Summary Prospectus, Prospectus <p class="MsoNormal" align="center" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt; text-align:center;line-height:normal;text-autospace:none">and Statement of Additional Information, each dated February 28, 2012, as supplemented <p class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal;text-autospace:none">  <p class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal;text-autospace:none">This Supplement updates certain information contained in the Summary Prospectus, Prospectus and Statement of Additional Information for MainStay 130/30 International Fund (the “Fund”), a series of MainStay Funds Trust (the “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. <p class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal;text-autospace:none">  <p class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal;text-autospace:none">At a meeting held on December 10-12, 2012, the Trust’s Board of Trustees, including the Independent Trustees, approved the following change, effective February 28, 2013: <p class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal;text-autospace:none">  <p class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal;text-autospace:none">Name Change <p class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal;text-autospace:none">  <p class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt;text-align: justify;line-height:normal;text-autospace:none">The name of the Fund is changed to “MainStay International Opportunities Fund.”   Principal Investment Strategy Change   <p class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt;line-height: normal;text-autospace:none">The first paragraph of the Principal Investment Strategies section of the Summary Prospectus and Prospectus is changed to read as follows: <p class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt;line-height: normal;text-autospace:none">  <p class="MsoNormal" style="font-size:11.0pt;font-family:'calibri','sans-serif';margin-top:0in;margin-right:.5in;margin-bottom:0in; margin-left:.5in;margin-bottom:.0001pt;text-align:justify;line-height:normal; text-autospace:none">The Fund invests primarily in equity securities of foreign companies. The Fund will typically invest in companies with capitalizations similar to those in the MSCI EAFE ® Index at the time of investment (which ranged from $963.4 million to $190.6 billion as of December 31, 2011). The Fund may also invest in equity securities with market capitalizations outside of the range of the MSCI EAFE ® Index. The Fund may invest in equity securities of companies that trade in emerging or developing markets, as determined by the Fund's Subadvisor, Madison Square Investors LLC, with significant investments under normal circumstances in at least three countries outside of the United States.   Principal Risks Change   <p class="MsoNormal" style="font-size:11.0pt;font-family:'calibri','sans-serif';margin-top:0in;margin-right:0in;margin-bottom:0in; margin-left:.5in;margin-bottom:.0001pt;line-height:normal;text-autospace:none">The following risk factors are added: <p class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt;line-height: normal;text-autospace:none">  <p class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt;line-height: .05pt;text-autospace:none">  <p class="MsoNormal" style="font-size:11.0pt;font-family:'calibri','sans-serif';margin-top:0in;margin-right:.5in;margin-bottom:0in; margin-left:.5in;margin-bottom:.0001pt;text-align:justify;line-height:normal; text-autospace:none">Mid-Cap Stock Risk: Stocks of mid-cap companies may be subject to greater price volatility, significantly lower trading volumes, cyclical, static or moderate growth prospects and greater spreads between their bid and ask prices than stocks of larger companies. Because these businesses frequently rely on narrower product lines and niche markets, they can suffer isolated setbacks. <p class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt;line-height: normal;text-autospace:none">  <p class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt;line-height: .05pt;text-autospace:none">  <p class="MsoNormal" style="font-size:11.0pt;font-family:'calibri','sans-serif';margin-top:0in;margin-right:.5in;margin-bottom:0in; margin-left:.5in;margin-bottom:.0001pt;text-align:justify;line-height:normal; text-autospace:none">Small-Cap Stock Risk: Stocks of small capitalization companies may be subject to greater price volatility, significantly lower trading volumes, cyclical, static or moderate growth prospects, and greater spreads between bid and ask prices than stocks of larger companies. Small capitalization companies may be more vulnerable to adverse business or market developments.   <p class="MsoNormal" align="center" style="margin-top:0in;margin-right:0in;margin-left:0in;font-size:11.0pt;font-family:'calibri','sans-serif';margin-bottom:0in;margin-bottom:.0001pt; text-align:center;line-height:normal;text-autospace:none">PLEASE RETAIN THIS SUPPLEMENT FOR YOUR FUTURE REFERENCE.