NEW YORK, Oct 23 (Reuters) - U.S. stocks opened lower onWednesday, pressured by weak results from Caterpillar Inc and amid concern over tightening financial conditions inChina.
The Dow Jones industrial average was down 50.93points, or 0.33 percent, at 15,416.73. The Standard & Poor's 500Index was down 5.18 points, or 0.30 percent, at 1,749.49.The Nasdaq Composite Index was down 21.18 points, or0.54 percent, at 3,908.39.
Shares of Caterpillar dropped 5.8 percent to $84.01.
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