Brevan Howard (Brevan Howard Asset Management LLP) is a European hedge fund management company based in Jersey with its funds domiciled in the Cayman islands. The company was co-founded by Alan Howard and four others in 2002. It was once described as one of the largest "macro hedge funds" in the world with $40 billion in assets under management (AUM) as of October 2013 before downsizing to $18 billion in 2016.