CHICAGO, IL - MARCH 15: Traders signal offers in the S&P 500 stock index futures pit at the CME Group following the announcement by the Federal Open Market Committee (FOMC) that it would maintain the... more 
CHICAGO, IL - MARCH 15: Traders signal offers in the S&P 500 stock index futures pit at the CME Group following the announcement by the Federal Open Market Committee (FOMC) that it would maintain the key policy rate near zero on March 15, 2011 in Chicago, Illinois. U.S. stock and commodity prices tumbled today following a sharp drop in Japan’s stock market, as investors worldwide worry about the economic impact of that country's recent earthquake, tsunami and unfolding nuclear crisis. (Photo by Scott Olson/Getty Images) less 
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Getty Images | Photo By Scott Olson / Getty Images
Tue, Mar 15, 2011 3:22 PM EDT