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US stocks opened lower on Monday, weighed by energy shares, after the S&P 500 closed its best week in nearly two years and ahead of data on US services sector growth and home sales.
The Dow Jones industrial average fell 44.89 points, or 0.27 percent, to 16,760.52, the S&P 500 lost 5.75 points, or 0.29 percent, to 1,958.83 and the Nasdaq Composite dropped 15.31 points, or 0.34 percent, to 4,468.40.
