Specialist Michael Gagliano works on the floor of the New York Stock Exchange Wednesday, Aug. 10, 2011. (AP Photo/Richard Drew)
Trading Faces
Trader Edward Curran smiles as he works on the floor of the New York Stock Exchange Thursday, Aug. 11, 2011. (AP Photo/Richard Drew)
Trading Faces
Specialist Stephen Steinthal works at his post on the floor of the New York Stock Exchange Wednesday, Aug. 10, 2011. (AP Photo/Richard Drew)
Trading Faces
Trader John Santiago squints as he watchs the numbers as he works on the floor of the New York Stock Exchange Wednesday, Aug. 10, 2011. (AP Photo/Richard Drew)
Trading Faces
Traders watch the announcement that the US Federal Reserve Bank will leave interest rates "exceptionally low" until 2013 on the floor of the New York Stock Exchange on August 9, 2011. (Photo credit: STAN HONDA/AFP/Getty Images)
Trading Faces
A trader talks on a telephone after the announcement that the US Federal Reserve Bank will leave interest rates "exceptionally low" until 2013, on the floor of the New York Stock Exchange August 9, 2011. The Federal Reserve pledged Tuesday to hold interest rates near zero for two more years and said it was mulling the tools it has to boost a slowing economy. (Photo credit: STAN HONDA/AFP/Getty Images)
Trading Faces
Credit: Mario Tama/Getty Images News
Trading Faces
Traders work on the floor of the New York Stock Exchange during morning trading on August 10. Stocks fell sharply again today after a major rebound yesterday. (Photo by Mario Tama/Getty Images)
Trading Faces
A trader works on the floor of the New York Stock Exchange during afternoon trading on August 5 (Credit: mario Tama/Getty Images)
Trading Faces
Joseph Dreyer of Knight Capital Americas, LP watches prices on the floor of the New York Stock Exchange August 8, 2011. (Photo credit: STAN HONDA/AFP/Getty Images)
Trading Faces
Traders work on the floor of the New York Stock Exchange at the opening bell August 8, 2011. (Photo credit: STAN HONDA/AFP/Getty Images)
Trading Faces
Traders work on the floor of the New York Stock Exchange on Thursday, Aug. 4, 2011 in New York. Stocks are plunging in another broad sell-off as investors grow concerned about an economic slowdown in the U.S. and Europe. (AP Photo/Jin Lee)
Trading Faces
A stock specialist watches prices on the floor of the New York Stock Exchange August 8, 2011. (Photo credit: Stan Honda/AFP/Getty Images)
Trading Faces
Jason Blatt of Knight Capital Americas (Photo credit: Stan Honda/AFP/Getty Images)
Trading Faces
Marshall Ryan of J.P. Morgan Securities, LLC, reacts as the closing bell rings on the floor of the New York Stock Exchange August 8, 2011. (Photo credit: STAN HONDA/AFP/Getty Images)
Trading Faces
A stock specialist watches prices on the floor of the New York Stock Exchange just before the closing bell August 5, 2011. (Photo credit: STAN HONDA/AFP/Getty Images)
Trading Faces
Trader John W. Panin of JNK Securites Corp. works on the floor of the New York Stock Exchange on August 4, 2011. (Photo credit: STAN HONDA/AFP/Getty Images)
Trading Faces
A stock specialist watches prices on the floor of the New York Stock Exchange on August 4, 2011. (Photo credit: STAN HONDA/AFP/Getty Images)
Trading Faces
Specialist Bernard L. Wheeler of Knight Captial Americas, L.P. works on the floor of the New York Stock Exchange on August 4, 2011. (Photo credit: STAN HONDA/AFP/Getty Images)
Trading Faces
A trader works on the floor of the New York Stock Exchange before the closing bell on August 4, 2011 (credit: Mario Tama/Getty Images)
Trading Faces
Markets Go Into Freefall Aug.4 (Credit: Mario Tama/getty Images)
Trading Faces
Markets Go Into Freefall As Dow Plunges Over 500 Points Aug. 4 (credit: Mario Tama/Getty Images News)
Trading Faces
Markets Go Into Freefall As Dow Plunges Over 500 Points Aug. 4 (credit: Stan Honda/AFP/Getty Images)
Trading Faces
Markets Go Into Freefall As Dow Plunges Over 500 Points on Aug. 4 (credit: Mario Tama/Getty Images News)
Trading Faces
Credit: Andrew Burton/Getty Images News
Trading Faces
A stock specialist monitors prices August 2 on the floor of the New York Stock Exchange. (Photo credit: STAN HONDA/AFP/Getty Images)
Trading Faces
Stocks Plunge Again As Wall Street Reacts To Credit Rating Downgrade Aug. 5 (credit: Stan Honda/AFP/Getty Images)
Trading Faces
Stocks Plunge Aug 8. As Wall Street Reacts To Credit Rating Downgrade (credit: Mario Tama/Getty Images News)
Trading Faces
Stocks Plunge Again As Wall Street Reacts To Credit Rating Downgrade (credit: Mario Tama/Getty Images News)
Trading Faces
A stock specialist watches prices on the floor of the New York Stock Exchange August 8, 2011(Photo credit: STAN HONDA/AFP/Getty Images)
Trading Faces
A stock specialist watches prices on the floor of the New York Stock Exchange August 8, 2011. (Photo credit: STAN HONDA/AFP/Getty Images)
Trading Faces
A stock specialist monitors prices August 2, 2011 on the floor of the New York Stock Exchange. (Photo credit: STAN HONDA/AFP/Getty Images)