Mathias Roberts, right, of Bank of America Merrill Lynch, and William Bott of Barclays Capital work on the floor of the New York Stock Exchange on the one year anniversary of the "flash crash,' ... more 
Mathias Roberts, right, of Bank of America Merrill Lynch, and William Bott of Barclays Capital work on the floor of the New York Stock Exchange on the one year anniversary of the "flash crash,' Friday, May 6, 2011, in New York. less 
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Associated Press | Photo By Henny Ray Abrams
Fri, May 6, 2011 10:19 AM EDT