NEW YORK, Oct 23 (Reuters) - U.S. stocks fell on Friday, with the Dow slipping below the 10,000 mark, as weak results from industrial companies overshadowed robust earnings from tech heavy-weights.
* The Dow Jones industrial average .DJI was down 109.13 points, or 1.08 percent, to end unofficially at 9,972.18. The Standard & Poor's 500 Index .SPX was down 13.31 points, or 1.22 percent, to finish unofficially at 1,079.60. The Nasdaq Composite Index .IXIC was down 10.82 points, or 0.50 percent, to close unofficially at 2,154.47.
* For the week, the Dow industrials slipped 0.2 percent, the S&P 500 fell 0.7 percent and the Nasdaq dipped 0.1 percent. (Reporting by Edward Krudy; Editing by Jan Paschal)