Traders work in the S&P 500 pit at the Chicago Board of Trad

UNITED STATES - JANUARY 28: Traders work in the S&P 500 pit at the Chicago Board of Trade shortly after the closing of the Federal Market Open Committee's first meeting of this year, in Chicago, Illinois, U.S., on Wednesday, Jan. 28, 2009. The Federal Reserve left the benchmark interest rate as low as zero, and said it's prepared to purchase Treasury securities to resuscitate lending and warned inflation may recede too quickly. (Photo by Tim Boyle/Bloomberg via Getty Images)