U.S. stocks opened modestly higher on Thursday after the European Central Bank unveiled fresh stimulus measures to shore up the economy. The S&P 500 opened 5 points, or 0.3%, higher at 1,994. The Dow Jones Industrial Average added 53 points, or 0.4%, to 17,054. Meanwhile, the Nasdaq Composite began the day up 19 points, or 0.4% at 4,693.
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