Wall Street dips at open after ADP report

U.S. stocks dipped at the open on Wednesday as a weaker-than-expected report on private sector employment raised concerns that Friday's impending jobs report could also point to worsening conditions in the labor market.

The Dow Jones industrial average fell 31.69 points, or 0.18%, to 17,744.43, the S&P 500 lost 3.86 points, or 0.19%, to 2,064.03 and the Nasdaq Composite dropped 7.40 points, or 0.15%, to 4,893.48.