Trader Robert Vella, right, works on the floor of the New York Stock Exchange Tuesday, Feb. 5, 2013. Stocks are turning higher in early trading on Wall Street following a spike in home prices and strong earnings reports from Kellogg and other U.S. companies. (AP Photo/Richard Drew)

Associated Press
Trader Robert Vella, right, works on the floor of the New York Stock Exchange Tuesday, Feb. 5, 2013. Stocks are turning higher in early trading on Wall Street following a spike in home prices and strong earnings reports from Kellogg and other U.S. companies. (AP Photo/Richard Drew)
Trader Robert Vella, right, works on the floor of the New York Stock Exchange Tuesday, Feb. 5, 2013. Stocks are turning higher in early trading on Wall Street following a spike in home prices and strong earnings reports from Kellogg and other U.S. companies. (AP Photo/Richard Drew)
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