U.S. stocks open lower as investors eye debt-ceiling talks in Washington

U.S. stocks opened lower on Wednesday as investors remained focused on the debt-ceiling negotiations in Washington. The S&P 500
SPX,
-0.73%
fell by 22 points, or 0.5%, ato 4,123. The Dow Jones Industrial Average
DJIA,
-0.77%
declined by 111 points, or 0.4%, at 32,939. The Nasdaq Composite
COMP,
-0.61%
retreated by 82 points, or 0.6%, to 12,480.