497 1 allfunds070317pro497e.txt PROSPECTUS SUPPLEMENT Filed Pursuant to Rule 497(e) of the Securities Act of 1933 July 3, 2017 Supplement to the Prospectuses, as in effect and as may be amended, for Fund Date of Prospectus ---- ------------------ Pioneer AMT-Free Municipal Fund May 1, 2017 Pioneer Bond Fund April 1, 2017 Pioneer Classic Balanced Fund December 1, 2016 Pioneer Core Equity Fund May 1, 2017 Pioneer Disciplined Growth Fund December 31, 2016 Pioneer Disciplined Value Fund December 31, 2016 Pioneer Dynamic Credit Fund August 1, 2016 Pioneer Emerging Markets Fund April 1, 2017 Pioneer Equity Income Fund March 1, 2017 Pioneer Flexible Opportunities Fund March 1, 2017 Pioneer Floating Rate Fund March 1, 2017 Pioneer Fund May 1, 2017 Pioneer Fundamental Growth Fund February 3, 2017 Pioneer Global Equity Fund April 1, 2017 Pioneer Global High Yield Fund March 1, 2017 Pioneer Global Multisector Income Fund March 1, 2017 Pioneer High Income Municipal Fund December 31, 2016 Pioneer High Yield Fund March 1, 2017 Pioneer ILS Interval Fund March 1, 2017 Pioneer International Equity Fund April 1, 2017 Pioneer Mid Cap Value Fund March 1, 2017 Pioneer Multi-Asset Income Fund April 1, 2017 Pioneer Multi-Asset Ultrashort Income Fund August 1, 2016 Pioneer Real Estate Shares May 1, 2017 Pioneer Select Mid Cap Growth Fund April 1, 2017 Pioneer Short Term Income Fund December 31, 2016 Pioneer Solutions - Balanced Fund December 1, 2016 Pioneer Solutions - Conservative Fund December 1, 2016 Pioneer Solutions - Growth Fund December 1, 2016 Pioneer Strategic Income Fund April 1, 2017 Pioneer U.S. Corporate High Yield Fund January 1, 2017 Pioneer U.S. Government Money Market Fund May 1, 2017 On July 3, 2017, Amundi acquired Pioneer Investments, a group of asset management companies located throughout the world. As a result of the transaction, Pioneer Investment Management, Inc. became an indirect wholly owned subsidiary of Amundi and Amundi's wholly owned subsidiary, Amundi USA, Inc. Prior to July 3, 2017, Pioneer Investments was owned by Pioneer Global Asset Management S.p.A., a wholly owned subsidiary of UniCredit S.p.A. In connection with the transaction, the names of each fund's investment adviser and principal underwriter have changed. All references in each fund's prospectus to Pioneer Investment Management, Inc. are changed to Amundi Pioneer Asset Management, Inc. ("Amundi Pioneer") and all references in each fund's prospectus to Pioneer Funds Distributor, Inc. are changed to Amundi Pioneer Distributor, Inc. The following replaces information under "Investment adviser" in the section of each fund's prospectus entitled "Management": Amundi Pioneer is an indirect wholly owned subsidiary of Amundi and Amundi's wholly owned subsidiary, Amundi USA, Inc. Amundi, one of the world's largest asset managers, is headquartered in Paris, France. As of March 31, 2017, Amundi had more than $1.2 trillion in assets under management worldwide. As of March 31, 2017, Amundi Pioneer (and its U.S. affiliates) had over $71 billion in assets under management. 30360-00-0717 (C) 2017 Amundi Pioneer Distributor, Inc. Underwriter of Pioneer mutual funds Member SIPC