BOSTON (Reuters) - Folger Hill Asset Management, a hedge fund run by former SAC Capital Advisors LP executive Sol Kumin, will merge with Schonfeld Strategic Advisors after a period of sluggish returns. “It became clear that the best path forward for the Folger Hill team was to combine forces,” Kumin wrote in a letter to investors dated April 10 and seen by Reuters on Wednesday. Schonfeld has been a key investor in Folger Hill’s Asia fund and the move will let “the majority of our staff and investment teams prosper,” Kumin wrote.