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March 10 (Reuters) - U.S. stocks were higher at the open on Thursday after the European Central Bank cut key interest rates and increased its asset-buying program to boost the euro zone economy.
The Dow Jones industrial average rose 30.48 points, or 0.18 percent, to 17,030.84, the S&P 500 gained 2.98 points, or 0.15 percent, to 1,992.24 and the Nasdaq composite added 12.75 points, or 0.27 percent, to 4,687.13. (Reporting by Tanya Agrawal; Editing by Anil D'Silva)