The Dow Jones Industrial Average and the S&P 500 were little changed at the open after data showed job growth slowed in May, suggesting that a rebound in the labor market was losing steam.
The Dow rose 7.1 points, or 0.03 per cent, to 21,151.28. The S&P 500 gained 1.67 points, or 0.06 per cent, to 2,431.73.
The Nasdaq Composite, however, added 14.99 points, or 0.24 per cent, to 6,261.82.