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Oct 6 (Reuters) - U.S. stocks fell marginally at the open on Tuesday as investors booked profits after the S&P 500's best 5-day run since 2011.
The Dow Jones industrial average fell 13.56 points, or 0.08 percent, to 16,762.87. The S&P 500 lost 2.38 points, or 0.12 percent, to 1,984.67 and the Nasdaq composite dropped 13.95 points, or 0.29 percent, to 4,767.31. (Reporting by Sudarshan Varadhan in Bengaluru; Editing by Savio D'Souza)