497 1 multifund122920supp497e.txt SUPPLEMENT Filed Pursuant to Rule 497(e) of the Securities Act of 1933 January 1, 2021 PIONEER FUNDS SUPPLEMENT TO THE PROSPECTUS, SUMMARY PROSPECTUS AND STATEMENT OF ADDITIONAL INFORMATION, AS IN EFFECT AND AS MAY BE AMENDED FROM TIME TO TIME, FOR: FUND DATE OF PROSPECTUS Pioneer Strategic Income Fund February 1, 2020 Pioneer Emerging Markets Equity Fund February 1, 2020 Pioneer Equity Income Fund March 1, 2020 Pioneer Flexible Opportunities Fund March 1, 2020 Pioneer Floating Rate Fund March 1, 2020 (as revised March 10, 2020) Pioneer Global High Yield Fund March 1, 2020 Pioneer High Yield Fund March 1, 2020 Pioneer ILS Bridge Fund March 1, 2020 Pioneer ILS Interval Fund March 1, 2020 Pioneer Mid Cap Value Fund March 1, 2020 Pioneer International Equity Fund April 1, 2020 Pioneer Select Mid Cap Growth Fund April 1, 2020 Pioneer AMT-Free Municipal Fund April 1, 2020 Pioneer Fund May 1, 2020 Pioneer Real Estate Shares May 1, 2020 Pioneer Core Equity Fund May 1, 2020 Pioneer U.S. Government Money Market Fund May 1, 2020 Pioneer Multi-Asset Ultrashort Income Fund August 1, 2020 Pioneer Fundamental Growth Fund August 1, 2020 Pioneer Bond Fund November 1, 2020 Pioneer Securitized Income Fund December 1, 2020 Pioneer Balanced ESG Fund December 1, 2020 Pioneer Multi-Asset Income Fund December 1, 2020 Pioneer Solutions - Balanced Fund December 1, 2020 Pioneer High Income Municipal Fund December 18, 2020 Pioneer MAP-High Income Municipal Fund December 18, 2020 Pioneer Disciplined Growth Fund December 31, 2020 Pioneer Disciplined Value Fund December 31, 2020 Pioneer Global Equity Fund December 31, 2020 Pioneer Corporate High Yield Fund December 31, 2020 Pioneer Short Term Income Fund December 31, 2020 -------------------------------------------------------------------------------- Effective January 1, 2021, Amundi Pioneer Asset Management. Inc., the investment adviser to the Pioneer funds, will change its name to Amundi Asset Management US, Inc. In addition, effective January 1, 2021, Amundi Pioneer Distributor, Inc., the funds' distributor, will change its name to Amundi Distributor US, Inc. References to these entities throughout each fund's prospectuses and statement of additional information are changed to reflect the new names on or after such date. 32395-00-0121 (Copyright)2021 Amundi Distributor US, Inc. Underwriter of Pioneer mutual funds Member SIPC