Medivation (MDVN) (NOV) (OC) (RIMM) Upgraded

Medivation Inc (NASDAQ: MDVN), National-Oilwell Varco, Inc. (NYSE: NOV), Owens Corning (NYSE: OC) and Research In Motion (NASDAQ: RIMM) were upgraded by analysts.

Medivation Inc. (MDVN) was upgraded by Leerink from a “Market Perform” rating to an “Outperform” rating.

National-Oilwell Varco, Inc. (NOV) was upgraded by Argus from a “Hold” rating to a “Buy” rating. They have a price target of $90.00 on the company.

Owens Corning (OC) was upgraded by Goldman Sachs (NYSE:GS) from a “Neutral” rating to a “Buy” rating. They have a price target of $35.00 on the company.

Research In Motion (RIMM) was upgraded by Scotia Capital from a “Sector Perform” rating to an “Outperform” rating.