NVIDIA (NVDA) (MRT) (PLOW) (CHKM) (COST) (CPN) Ratings Reiterated

NVIDIA (NASDAQ: NVDA), Morton’s Restaurant Group, Inc. (NYSE: MRT), Douglas Dynamics, Inc. (NASDAQ: PLOW), Chesapeake Midstream Partners LP (NASDAQ: CHKM), Costco (NASDAQ: COST) and Calpine (NYSE: CPN) had ratings on them reiterated by analysts.

Goldman Sachs (NYSE:GS) reiterated its "Neutral" rating on NVIDIA (NVDA). They have a price target of $14.00 on the company.

Piper Jaffray (NYSE:PJC) reiterated its "Overweight" rating on Costco (COST).

Oppenheimer reiterated its "Market Perform" rating on Morton’s Restaurant Group, Inc. (MRT).

Piper Jaffray (NYSE:PJC) reiterated its "Overweight" rating on Douglas Dynamics, Inc. (PLOW).

Wunderlich reiterated its "Overweight" rating on Chesapeake Midstream Partners LP (CHKM).

Wunderlich reiterated its "Buy" rating on Calpine (CPN). They have a price target of $18.00 on the company.