Paul Russo, head of U.S. Equities Trading and Global Equities One Delta Trading at Goldman Sachs & Co., speaks at the Securities Industry and Financial Markets Association annual meeting, Monday, Nov. 7, 2011 in New York. (AP Photo/Mark Lennihan)

Associated Press
Paul Russo, head of U.S. Equities Trading and Global Equities One Delta Trading at Goldman Sachs & Co., speaks at the Securities Industry and Financial Markets Association annual meeting, Monday, Nov. 7, 2011 in New York.  (AP Photo/Mark Lennihan)
Paul Russo, head of U.S. Equities Trading and Global Equities One Delta Trading at Goldman Sachs & Co., speaks at the Securities Industry and Financial Markets Association annual meeting, Monday, Nov. 7, 2011 in New York. (AP Photo/Mark Lennihan)
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