Affiliated Managers Group, Inc. (NYSE: AMG), a global asset management company, today announced the completion of the acquisition of River Road Asset Management from Aviva Investors North America Holdings, Inc. (a subsidiary of Aviva plc).

River Road, which is based in Louisville, Kentucky, offers industry-leading value-oriented equity strategies using a proven “absolute value” investment philosophy designed to provide sustainable, low-volatility returns over the long term. Over the past 16 years, the team at River Road, which includes 17 investment professionals, has developed innovative strategies which appeal to a broad and diverse institutional and retail client base, including mutual funds, endowments, foundations, retirement plan sponsors, corporations and sovereign wealth funds located around the world.

As part of the transaction, River Road’s executive team and key investment professionals have agreed to long-term commitments to remain with the firm. River Road will maintain an ongoing relationship with Aviva through a number of sub-advisory mandates. The terms of the transaction were not disclosed.

About Affiliated Managers Group

AMG is a global asset management company with equity investments in leading boutique investment management firms. AMG’s innovative partnership approach allows each Affiliate’s management team to own significant equity in their firm while maintaining operational autonomy. AMG’s strategy is to generate growth through the internal growth of existing Affiliates, as well as through investments in new Affiliates. In addition, AMG provides centralized assistance to its Affiliates in strategic matters, marketing, distribution, product development and operations. As of March 31, 2014, the aggregate assets under management of AMG’s Affiliates were approximately $594 billion, pro forma for a pending investment, in more than 400 investment products across a broad range of investment styles, asset classes and distribution channels. For more information, please visit the Company’s website at www.amg.com.

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, the ability to close pending investments, the investment performance of our Affiliates and their ability to effectively market their investment strategies, and other risks detailed from time to time in AMG’s filings with the Securities and Exchange Commission. Reference is hereby made to the “Risk Factors” set forth in the Company’s Form 10-K for the year ended December 31, 2013.

AMG routinely posts information that may be significant for investors in the Investor Relations section of its website, and encourages investors to consult that section regularly. For additional information, please visit www.amg.com.