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The Dow Jones Industrial Average was down 9.46 points (0.08 percent) at 12,048.41, while the broad-based S&P 500 dropped 1.05 points (0.08 percent) to 1305.69.
The tech-heavy Nasdaq Composite lost 0.67 (0.02 percent) at 2,736.74.
Before the opening the private payrolls firm ADP reported a 15 percent increase in job creation from January -- to 217,000 jobs -- much better than the hiring slowdown expected by economists.
"Overall, this is a very strong report that indicates continued improvement in the labor market," said Nicholas Tenev of Barclays Capital Research.