NEW YORK, Jan 4 (Reuters) - U.S. stocks opened higher on Tuesday, building on Monday's gains as optimism about the U.S. economy remained intact.
The Dow Jones industrial average rose 16.88 points, or 0.14 percent, at 11,687.63. The Standard & Poor's 500 Index was up 1.40 points, or 0.11 percent, at 1,273.27. The Nasdaq Composite Index added 8.77 points, or 0.33 percent, at 2,700.29.