The Blackstone Group L.P. (Blackstone) is a United States-based company that is a manager of private capital and provider of financial advisory services. Blackstone is an independent manager of private capital worldwide, with assets under management of $166.2 billion as of December 31, 2011. Its alternative asset management businesses include the management of private equity funds, real estate funds and funds of hedge funds. It operates in five segments: Private Equity, Real Estate, Hedge Fund Solutions, Credit Businesses, and Financial Advisory. In May 2012, the Company expanded its property presence in London, buying the 12 building Devonshire Square office and retail complex from rival Rockpoint and the Abu Dhabi Investment Authority. In November 2012, the Company acquired GCA Services Group.