Marcus Browning has resigned from Citi, where he recently took up a new role to build a proprietary team to trade volatility. He is believed to be headed for a position on the buy side. "We are disappointed to see Marcus leave, he has been a profitable trader for us and he has been instrumental in building FX options into the strong business that it is today at Citi. But we understand that he has long harboured a desire to work on the buy side, and we wish him success in the future," says James Bindler, global FX options head at Citi.