Raj Rajaratnam Rajaratnam, Gupta seek to void U.S. insider trading penalties Galleon Group hedge fund founder Raj Rajaratnam and former Goldman Sachs Group Inc director Rajat Gu... Mar 10, 2015 02:35 AM EDT SAC's Martoma gets nine years prison for insider trading Mathew Martoma, a former portfolio manager at billionaire Steven A. Cohen's SAC Capital Advisors LP ... Sep 08, 2014 09:09 PM EDT