Eight people have left AHL, Man Group’s flagship computer-driven hedge fund responsible for three quarters of its profits, across its research, trading and technology departments. The departures come as analysts express concern about AHL’s weak performance and the firm tries to diversify its dependence on the fund for profits.

Those who have left include a senior academic, as well as more junior roles in research and trading. However none of the names leaving the firm are on the list of eight key people that AHL names in its most recent results, dated September 30.