Cisco (CSCO) (DVOX) (ENS) (HOGS) (OAS) (ROSE) (VRTX) Upgraded

Cisco Systems, Inc. (NASDAQ: CSCO), DynaVox (NASDAQ: DVOX), EnerSys (NYSE: ENS), ZHONGPIN INC. (NASDAQ: HOGS), Oasis Petroleum Inc. (NYSE: OAS), Rosetta Resources Inc. (NASDAQ: ROSE) and Vertex Pharmaceuticals (NASDAQ: VRTX) were upgraded by analysts.

Cisco Systems, Inc. (CSCO) was upgraded by Citigroup (NYSE:C) to a “Buy” rating. They have a price target of $22.00 on the company.

DynaVox (DVOX) was upgraded by Piper Jaffray (NYSE:PJC) from a “Neutral” rating to an “Overweight” rating. They have a price target of $5.00 on the company.

EnerSys (ENS) was upgraded by Mizuho from a “Neutral” rating to a “Buy” rating.

ZHONGPIN INC. (HOGS) was upgraded by Global Hunter Securities from a “Reduce” rating to a “Neutral” rating.

Oasis Petroleum Inc. (OAS) was upgraded by CapitalOne Southcoast from a “Neutral” rating to a “Buy” rating.

Rosetta Resources Inc. (ROSE) was upgraded by Imperial Capital to an “Outperform” rating. They have a price target of $60.00 on the company.

Vertex Pharmaceuticals (VRTX) was upgraded by Morgan Stanley (NYSE:MS) from an “Underweight” rating to an “Equal Weight” rating. They have a price target of $32.00 on the company.