Will This Analyst Upgrade Help Clovis Oncology (CLVS) Stock Today? (Update)

Update (9:35 a.m.): Updated with Thursday market open information.

NEW YORK (TheStreet) -- Stifel Nicolaus upgraded Clovis Oncology  (CLVS) to "buy" from "hold" and set a $50 price target. The firm cited valuation, as the stock is down 60% from its highs.

The stock was up 4.45% to $40.11 at 9:32 a.m. on Thursday.

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