RATINGS CHANGES

Antero (AR - Get Report) was upgraded to hold from underperform at Jefferies. $27 price target. Management has addressed key concerns, Jefferies said. 

Groupon (GRPN - Get Report) was upgraded to overweight from neutral at Piper Jaffray. $6 price target. Customer ramp should outperform expectations, Piper said. 

Humana (HUM - Get Report) was upgraded to buy at Jefferies. $210 price target. The risk/reward is attractive, even if the Aetna deal breaks, Jefferies said. 

Monster Beverage (MNST - Get Report) was downgraded to market perform from outperform at Wells Fargo. The company has limited earnings upside potential, Wells said. 

Merck (MRK - Get Report) was downgraded to market perform from outperform at BMO Capital. The valuation is less attractive, based on a $62 price target, BMO said. 

PacWest (PACW - Get Report) was downgraded to neutral at DA Davidson. The valuation is less attractive, based on a $45 price target, Davidson said. 

Party City (PRTY - Get Report) was upgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: PRTY.

Parexel (PRXL) was downgraded to market perform from outperform at William Blair. The surprise CFO departure is concerning on multiple fronts, William Blair said. 

QEP (QEP - Get Report) was upgraded to outperform at BMO Capital. The valuation is more attractive, based on a $24 price target, BMO said. 

Regal (RGC) was downgraded to sector perform from outperform at RBC Capital. $23 price target. The valuation is less attractive, with shares up 15% over the past month, RBC said. 

Total SA (TOT - Get Report) was upgraded to buy at TheStreet Ratings. You can view the full analysis from the report here: TOT.

This article was written by a staff member of TheStreet.