The multibillion-dollar trading firm said that its billionaire co-chief executives, John Overdeck and David Siegel, would step down.The multibillion-dollar trading firm said that its billionaire co-chief executives, John Overdeck and David Siegel, would step down. Appointments and Executive Changes, Hedge Funds, Two Sigma Investments LLC, Siegel, David M (1961- ), Overdeck, John Albert Read More
Two Sigma Hedge Fund Replaces John Overdeck and David Siegel as Co-C.E.O.s


