Definitive Materials Filed by Investment Companies. (497)

File Number:333-89354
Filed Pursuant to Rule 497(e) of
the Securities Act of 1933

January 28, 2013

Pioneer Absolute Credit Return Fund

Supplement to the August 1, 2012 Summary Prospectus, as in effect and as may
be amended from time to time

Fund summary

The following replaces the information in the "Management" chart in the section
entitled "Fund summary":

PORTFOLIO MANAGEMENT   Andrew Feltus, Senior Vice President of Pioneer
                       (portfolio manager of the fund since 2011),
                       Michael Temple, Senior Vice President and
                       Director of Fixed Income Credit Research at
                       Pioneer (portfolio manager of the fund since
                       2011), Thomas Swaney, Senior Vice President
                       and Director of Alternative Fixed Income at
                       Pioneer (portfolio manager of the fund since
                       2013), Chin Liu, Quantitative Research Analyst
                       at Pioneer (portfolio manager of the fund since
                       2011).

26354-00-0113

Piedmont Nat Gas (NYSE:PNY)
Historical Stock Chart
From Jun 2024 to Jul 2024