S&P 500 Sees Biggest Selloff In More Than 2 Months

U.S. stocks sold off on Thursday after the European Central Bank unveiled further monetary stimulus measures that fell short of expectations. Meanwhile, Federal Reserve Chairwoman Janet Yellen reiterated that conditions were in place to begin normalizing interest rates. The S&P 500 fell 29.88 points, or 1.4%, to 2,049.63, its biggest decline since Sep 28. The benchmark index turned negative for the year. The Dow Jones Industrial Average futures dropped 251.74 points, or 1.4%, to 17,477.67. The Nasdaq Composite ended the session down 85.70 points, or 1.7%, to 5,037.53

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