Steven A. Cohen Steven Cohen's ex-wife can ask him about insider trading: judge Billionaire Steven A. Cohen can face questions about insider trading at his hedge fund SAC Capital A... Nov 18, 2014 08:13 AM EST 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