BlueCrest Capital Management has hired David Phitoussi, director and single stock derivatives trader at Merrill Lynch in London, to build up an equity volatility trading business. Phitoussi, reached on his cell phone, confirmed the move and said he will start at the hedge fund in three months. He declined comment on the detail of his new role and on BlueCrest's plans. Bill Reeves and Mike Platt, co-founders of the hedge fund in London, and Patrick Meyer, spokesman for Merrill, did not return messages.