Stocks are falling as Wall Street gives back some of its gains from Thursday's huge rally and investors refocus on their fears about the economy. Some retrenchment is to be expected after such a big advance, when the Dow Jones industrials rallied more than 550 points. Investors are also digesting comments from Federal Reserve Chairman Ben Bernanke that the markets remain under "severe strain." Bernanke, speaking at conference in Germany, also left open the possibility of another interest rate cut next month. Meanwhile, the government has issued a sobering report on October retail sales, and Abercrombie & Fitch Co. and JCPenney Co. are the latest retailers to provide bleak outlooks ahead of the holiday shopping season. The Dow is down 117 points at the 8,718 level. The major indexes are all down more than 1 percent.