Achillion plunges on FDA move

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Liver Complications Won't Go Away

Achillion Pharmaceuticals said the U.S. Food & Drug Administration kept its experimental hepatitis C drug sovaprevir on hold. The company had tried to address regulators' concerns earlier in the year, but liver complications remain a problem. ACHN plunges more than 50 percent before the opening bell on my tradeMONSTER platform.

Morgan Stanley Downgrades Panera

Panera Bread was downgraded to "equal weight" from "overweight" by Morgan Stanley, which says Chipotle Mexican Grill might do a better job driving sales. PNRA falls 2 percent in the premarket and CMG inches higher.



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