NEW YORK, Sept 24 (Reuters) - U.S. stocks fell on Thursday, with each of the major indexes sliding into negative territory after an unexpected fall in sales of previously owned U.S. homes in August.
* The National Association of Realtors said sales fell 2.7 percent to an annual rate of 5.10 million units, from 5.24 million units in July, and below Wall Street estimates of a 5.35 million unit pace.
* The Dow Jones industrial average dropped 9.75 points, or 0.10 percent, to 9,738.80. The Standard & Poor's 500 Index dropped 4.36 points, or 0.41 percent, to 1,056.51. The Nasdaq Composite Index dropped 10.48 points, or 0.49 percent, to 2,120.94.