Quiksilver (ZQK) (ABC) (BBBY) (ABMD) (OAS) (AH) Upgraded

Quiksilver, Inc. (NYSE: ZQK), AmerisourceBergen Corp. (NYSE: ABC), Bed Bath & Beyond Inc. (NASDAQ: BBBY), Abiomed (NASDAQ: ABMD), Oasis Petroleum Inc. (NYSE: OAS) and Accretive Health, Inc. (NYSE: AH) upgraded by analysts.

Quiksilver, Inc. (ZQK) was upgraded by FBR Capital from an “Underperform” rating to a “Market Perform” rating. They have a price target of $4.00 on the company.

AmerisourceBergen Corp. (ABC) was upgraded by Stifel Nicolaus from a “Hold” rating to a “Buy” rating. They have a price target of $49.00 on the company.

Bed Bath & Beyond Inc. (BBBY) was upgraded by Cowen from a “Neutral” rating to an “Outperform” rating.

Abiomed (ABMD) was upgraded by Rodman & Renshaw from an “Underperform” rating to a “Market Perform” rating.

Oasis Petroleum Inc. (OAS) was upgraded by UBS AG (NYSE:UBS) from a “Neutral” rating to a “Buy” rating. They have a price target of $4.95 on the company, down from $33.00.

Accretive Health, Inc. (AH) was upgraded by BB&T (NYSE:BBT) from a “Hold” rating to a “Buy” rating.