JPMorgan's 'London Whale' trader is leaving JPMorgan Chief Executive Officer Jamie Dimon has said the bank lost $2 billion in market bets in a 15-day period. NEW YORK, May 16 (UPI) -- The JPMorgan Chase trader based in London who is at the center of the bank's recently announced $2 billion losses is leaving the bank, colleagues said. The New York Times reported Wednesday Bruno Iksil, known as "the London whale," and also reportedly nicknamed "Voldemort," is still working at the bank but is expected to tender his resignation soon with a departure timed before the end of the year. Reportedly, the bank was attempting to reposition its portfolio to avoid trouble generated by the financial crisis in Europe. Ina Drew, one of the bank's chief investment officers and one of Wall Street's most successful women, resigned from JPMorgan Monday as a result of the losses, which have provoked regulatory reviews in Britain and the United States. Sen. Robert Corker, R-Tenn., the ranking Republican on the Senate Banking Committee has called for a hearing to review the controversy. Shareholders are also reacting to the debacle. The Wall Street Journal reported Wednesday that two shareholders have filed a lawsuit claiming the bank misled investors about the risks the bank was taking. The FBI is also investigating the matter, the Journal said.