In this Jan. 25, 2012 photo, traders Thomas Kay, left, Marshall Ryan, center, and Robert McQuade work on the floor of the New York Stock Exchange. World stock markets rose on Thursday,

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In this Jan. 25, 2012 photo, traders Thomas Kay, left, Marshall Ryan, center, and Robert McQuade work on the floor of the New York Stock Exchange. World stock markets rose on Thursday, Jan. 26, after the U.S. Federal Reserve pledged to keep interest rates low until late 2014 to nurture the country's stubbornly slow economic recovery. (AP Photo/Richard Drew) less