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(Reuters) - U.S. stocks opened lower on Tuesday as investors awaited Federal Reserve Chair Janet Yellen's speech and oil prices skidded nearly 3 percent.
The Dow Jones industrial average was down 22.53 points, or 0.13 percent, at 17,512.86, the S&P 500 2.04 points, or 0.1 percent, at 2,035.01 and the Nasdaq Composite 10.83 points, or 0.23 percent, at 4755.96. (Reporting by Yashaswini Swamynathan; Editing by Saumyadeb Chakrabarty)