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S&P briefly turns up



    NEW YORK (Reuters) - The S&P 500 briefly turned higher and the Dow cut losses on Thursday, with technology leading the way up. The Nasdaq added to gains.

    Vertex Pharmaceuticals Inc climbed 8.4 percent to $43.62 after IMS Health said it was revising estimates of the number of prescriptions written in late September for Vertex's hepatitis C drug.

    An index of semiconductors rose 2.2 percent.

    (Reporting by Caroline Valetkevitch; Editing by Jan Paschal)