Major hedge fund companies include Bridgewater Associates LP, J.P. Morgan Asset Management, Och-Ziff Capital Management Group LLC and Brevan Howard Asset Management LLP, according to Investopedia. Because privately owned hedge fund companies only release detailed financial data and reports to their clients, the figures to measure these companies' assets under management are mostly taken from their own sources on websites and other public venues.
As of January 2015, Bridgewater had $150 billion in assets and employed almost 1,400 individuals, explains Investopedia. Of these assets, $87.1 billion were in hedge funds; Bridgewater is the largest hedge fund manager. Its investments are in central banks, corporate funds and institutional entities, among others. J.P. Morgan Asset Management is part of JPMorgan Chase & Co. and managed $59 billion in hedge fund assets as of December 2013. JPMorgan Chase had around $2.4 trillion in assets over all.
Och-Ziff Capital Management Group had approximately $47.1 billion in fund assets as of December 2014, and it is considered a hedge fund specialist with assets spread over a variety of types including real estate funds, equity funds and credit funds, reports Investopedia. Brevan Howard Asset Management has approximately $40 billion hedge fund assets under management and is considered the largest hedge fund company in Europe. It focuses on short-term profit venues within a six-month period.