U.S. stocks took a Halloween-eve tumble Friday as investor jitters returned. Posting its sharpest drop since April 20, the Dow fell 249.85 points, or 2.51%, to 9712.73, as all 30 stocks in the index posted losses. The S&P 500 fell 29.93, or 2.81%, to 1036.18, dragging the index to its first monthy decline since February. The selloff began after reports of low consumer confidence and spending and the threat of a CIT Group bankruptcy erased Thursday's gains. Heavyweight investor George Soros warned that the global economic recovery is "liable to run out of steam."