A trader works on the floor of the New York Stock Exchange while a screen shows U.S. Federal Reserve Chairman Ben Bernanke's news conference, December 12, 2012. Stocks ended little changed on Wednesday, giving up most of the day's gains after Bernanke reiterated that monetary policy won't be enough to offset damage from the "fiscal cliff." REUTERS/Brendan McDermid (UNITED STATES - Tags: BUSINESS POLITICS)