Earnings lift Wall Street at open

Wall Street opened higher on Tuesday as a wave of companies reported good earnings, but the dearth of blockbuster results threatened to cool off a recent rally.

* The Dow Jones industrial average (.DJI) gained 26.68 points, or 0.24 percent, to 11,118.73. The Standard & Poor's 500 Index (.SPX) rose 6.31 points, or 0.53 percent, to 1,203.83. The Nasdaq Composite Index (.IXIC) climbed 11.67 points, or 0.47 percent, to 2,491.78.