Pioneer Investments announced today that it will hold a conference call regarding Pioneer Floating Rate Trust (NYSE: PHD) and Pioneer Diversified High Income Trust (NYSE Amex: HNW) with Portfolio Managers Jonathan Sharkey and Andrew Feltus. The purpose of the call is to discuss the performance of the funds year-to-date and their current positioning. The conference call will be open to the public.

The call will be held on Thursday, August 25, 2011 at 4:00 PM ET and can be accessed by calling (888) 584-3271. Conference ID #86815465. The call will be available on replay, beginning 72 hours after the call, for seven days at (855) 859-2056. Conference ID #86815465. A transcript will be posted to

Pioneer Investment Management, Inc., the investment advisor for these funds, is part of Pioneer Investment Management USA Inc., the U.S. subsidiary of Pioneer Global Asset Management S.p.A.

Closed-end funds, unlike open-end funds, are not continuously offered. There is a one-time public offering and once issued, common shares of closed-end funds are sold in the open market through a stock exchange and frequently trade at prices lower than their net asset value. Net asset value (NAV) is total assets less total liabilities divided by the number of common shares outstanding.

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