AMG to Announce Second Quarter Results on July 27, 2005; Teleconference Scheduled for 11:00 a.m. Eastern Time.

BOSTON -- Affiliated Managers Group, Inc. (NYSE: AMG) will report financial and operating results for the second quarter ended June 30, 2005 on Wednesday, July 27, 2005. A teleconference will be held at 11:00 a.m. Eastern time on the same day.

In addition to quarterly results, the teleconference may include discussion of management's expectations of future financial and operating results. William J. Nutt, Chairman, Sean M. Healey, President and Chief Executive Officer, Darrell W. Crate, Executive Vice President and Chief Financial Officer, and Nathaniel Dalton, Executive Vice President in charge of Affiliate Development, will host the session.

Parties interested in listening to the teleconference should dial 1-800-257-2101 (domestic calls) or 1-303-262-2004 (international calls) starting at 10:45 a.m. Eastern time. Those wishing to listen to the teleconference should dial the appropriate number at least ten minutes before the call begins.

The teleconference will also be available for replay beginning approximately one hour after the conclusion of the call. To hear a replay of the call, please dial 1-800-405-2236 (domestic calls) or 1-303-590-3000 (international calls) and enter the pass code, 11035381. The live call and replay of the session, and additional financial information referenced during the teleconference, can also be accessed via the Web at www.amg.com.

For more information on Affiliated Managers Group, Inc., please visit AMG's Web site at www.amg.com.