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NEW YORK, Dec 16 (Reuters) - U.S. stocks fell for a third straight session in volatile trading on Tuesday, led by declines in consumer discretionary and technology shares, while a drop in the Russian rouble added to worries about the global economy.
The Dow Jones industrial average fell 111.9 points, or 0.65 percent, to 17,068.94, the S&P 500 lost 16.85 points, or 0.85 percent, to 1,972.78 and the Nasdaq Composite dropped 57.32 points, or 1.24 percent, to 4,547.83.
Despite a sharp drop in Brent crude futures, energy sector stocks on the S&P 500 gained 0.7 percent. (Reporting by Caroline Valetkevitch; Editing by Nick Zieminski)