Wall Street slips at open with Bernanke in focus

U.S. stocks fell at the open on Thursday as investors looked to Federal Reserve Chairman Ben Bernanke's speech on Friday at a symposium of central bankers for fresh trading incentives.

The Dow Jones industrial average dropped 70.23 points, or 0.54 percent, to 13,037.25. The Standard & Poor's 500 Index dropped 7.71 points, or 0.55 percent, to 1,402.78. The Nasdaq Composite Index dropped 16.22 points, or 0.53 percent, to 3,064.97.