The head of investor relations is leaving Brevan Howard Asset Management, the second senior departure from Europe's largest hedge fund firm in the past two months. The move comes amid increased turnover in hedge funds' sales and marketing teams.

James Morrison, a partner who has worked at the firm since its inception in 2003, will leave in the summer, according to four people familiar with the situation. His departure follows that of Philippe Lespinard, head of absolute return strategies, who had strategic responsibility for the firm's Ucits funds and left at the end of March.