NEW YORK – SEPTEMBER 15: A trader works on the floor of the New York Stock Exchange September 15, 2008 in New York City. In afternoon trading the Dow Jones Industrial Average fell over 500 points as U.S. stocks suffered a steep loss after news of Merrill Lynch & Co. Inc was selling itself to Bank of America Corp, the financial firm Lehman Brothers Holdings Inc. filed for Chapter 11 bankruptcy protection, and insurance giant American International Group Inc. (AIG) was approved to secure capital from itself. (Photo by Spencer Platt/Getty Images)