U.S. shares inched up at the open on Tuesday, extending gains from the past two sessions, as focus turned to data on manufacturing and job openings, while Exxon Mobil and United Parcel Service gained on strong results.
The Dow Jones Industrial Average rose 19.6 points, or 0.06 percent, at the open to 35151.47.
The S&P 500 rose 4.0 points, or 0.09 percent, at the open to 4519.57, while the Nasdaq Composite rose 37.6 points, or 0.26 percent, to 14277.434 at the opening bell.