Ex-Goldman Mortgage Trader Birnbaum Said to Post 30% Fund Gain

Ex-Goldman Mortgage Trader Birnbaum Said to Post 30% Fund Gain

Joshua Roberts/Bloomberg

Joshua Birnbaum, former managing director of structured products group trading with Goldman Sachs Group Inc., testifies before a Senate Homeland Security and Governmental Affairs subcommittee hearing on Wall Street and the financial crisis in Washington, D.C., in this April 27, 2010 file photo.