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U.S. stocks opened marginally lower on Tuesday on growing speculation that the Federal Reserve could raise interest rates as soon as September.
The Dow Jones industrial average rose 7.37 points, or 0.04 percent, to 17,773.92, the S&P 500 gained 0.94 points, or 0.05 percent, to 2,080.22 and the Nasdaq Composite dropped 6.06 points, or 0.12 percent, to 5,015.57.
