Brevan Howard’s Rokos to depart

A co-founder of Brevan Howard, one of the world's biggest and most successful hedge fund managers, is to leave the firm this month. Chris Rokos, a star trader on the firm’s $25bn (£15.8bn) flagship Master fund who has worked with founder Alan Howard for more than ten years, is to stop trading at the end of August, founding partner Nagi Kawkabani said yesterday.