Samantha Lee/Business InsiderQuant funds are expanding beyond computer-run strategies.Firms like Qube and Squarepoint are backing legions of human stockpickers."We want to diversify our alpha sources," said Squarepoint's Nicolas Janson.As mega hedge funds like Millennium, Citadel, and Point72 battle for the best stock-picking talent, another segment of the multi-trillion-dollar industry has joined the fray.Quant funds are increasingly turning to their longtime competition — human stock-pickers — to diversify their returns.