Affiliated Managers Group, Inc. (AMG) is a global asset management company with equity investments in a group of boutique investment management firms. As of December 31, 2010, the Company managed approximately $320 billion in assets through its Affiliates in more than 350 investment products across a range of asset classes and investment styles in three principal distribution channels: Mutual Fund, Institutional and High Net Worth. On March 15, 2010, it completed its investment in Artemis Investment Management Ltd (Artemis). On April 15, 2010, it completed its investment in Aston Asset Management LLC (Aston) through the acquisition of Highbury Financial Inc. On June 30, 2010, it completed its investment in Pantheon Ventures Inc., Pantheon Holdings Limited and Pantheon Capital (Asia) Limited (collectively, Pantheon). On December 3, 2010, it completed its investment in Trilogy Global Advisors, LLC (Trilogy).