AMG Names Seth W. Brennan Senior Vice President.

Business/Technology Editors

BOSTON--(BUSINESS WIRE)--April 27, 2000

Affiliated Managers Group, Inc. (NYSE:AMG), a Boston-based asset management holding company, announced today that Seth W. Brennan has been named Senior Vice President.

Mr. Brennan is responsible for coordinating the Company's new investment activities, a primary component of AMG's growth strategy. AMG has invested in 15 investment management firms (Affiliates), which collectively managed over $90 billion in assets at March 31, 2000.

"Seth has been an invaluable asset to AMG over the last five years," stated William J. Nutt, AMG's Chairman and Chief Executive Officer. "I am very pleased to recognize his outstanding efforts and contributions to AMG in the new investment area and, more broadly, as a member of AMG's senior management team."

Mr. Brennan joined AMG in 1995 as Assistant Vice President and became Vice President in 1996. Prior to joining AMG, Mr. Brennan was with Morgan Stanley & Co. Incorporated, where he was a member of the Global Insurance Investment Banking Group working on mergers and acquisitions and corporate finance activities for investment management firms, insurance companies, and other diversified financial institutions. Prior to his work at Morgan Stanley, he was a member of the Financial Institutions Group at Wasserstein, Perella & Co. Mr. Brennan received a B.A. from Hamilton College.

AMG addresses the succession and transition issues facing the principals of growing mid-sized investment management firms. The Company's strategy is to generate growth through investments in new Affiliates, as well as through the internal growth of its existing Affiliates. AMG's innovative transaction structure allows individual members of each Affiliate's management to receive significant direct ownership in their firm while maintaining operating autonomy. In addition, AMG provides centralized assistance to its Affiliates, when requested, in strategic matters, marketing, distribution, product development and operations support.

Certain matters discussed in this press release may constitute forward-looking statements within the meaning of the federal securities laws. Actual results and the timing of certain events could differ materially from those projected in or contemplated by the forward-looking statements due to a number of factors, including changes in the securities or financial markets or in general economic conditions, the availability of equity and debt financing, competition for acquisitions of interests in investment management firms, and other risks detailed from time to time in AMG's filings with the Securities and Exchange Commission. Reference is hereby made to the "Cautionary Statements" set forth in AMG's Form 10-K for the year ended December 31, 1999.

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