U.S. stocks fell shortly after the open on Tuesday as disappointing economic data offset strong quarterly results from bellwethers Apple Inc and Caterpillar Inc .

The Dow Jones industrial average <.DJI> was down 9.14 points, or 0.09 percent, at 10,083.05. The Standard & Poor's 500 Index <.SPX> fell 1.28 points, or 0.12 percent, at 1,096.63. The Nasdaq Composite Index <.IXIC> dipped 0.93 points, or 0.04 percent, at 2,175.39.

(Reporting by Angela Moon; editing by Jeffrey Benkoe)