Mathew Martoma, former portfolio manager at SAC Capital Advisors LP, exits the U.S. District Court for the Southern District of New York, following sentencing for insider trading, in Lower Manhattan September 8, 2014. Martoma, a former portfolio manager at billionaire Steven A. Cohen's SAC Capital Advisors LP hedge fund, was sentenced on Monday to nine years in prison for engaging in what authorities called the most lucrative insider trading scheme in U.S. history. REUTERS/Brendan McDermid (UNITED STATES - Tags: BUSINESS CRIME LAW)