Questcor Pharmaceuticals Inc. (QCOR) declined for a second straight day after a research report said that the company’s multiple sclerosis treatment didn’t contain any of its active ingredient. The shares of the Anaheim, California-based company fell 7.7 percent to $62.27 at 1:45 p.m. New York time, after tumbling 9.1 percent yesterday, the biggest single-day loss in about four months.
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