U.S. stocks opened slightly lower Tuesday as investors took a pause after a big rally during the previous session. Investors focused on earnings results, monthly car sales and factory-order data on Tuesday. The S&P 500 fell 6 points, or 0.3%, to 2,098. The Dow Jones Industrial Average fell 22 points, or 0.1%, to 17,806. The Nasdaq Composite began the day down 14 points, or 0.3%, at 5,113.
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