RATINGS CHANGES

AbbVie (ABBV - Get Report) was upgraded to buy from neutral at Citigroup. $65 price target. The market is underestimating the company's patents, Citigroup said.

Cerner (CERN - Get Report) was downgraded to neutral from buy at Goldman Sachs. The valuation is not as attractive, based on a $54 price target, Goldman said.

Chipotle Mexican Grill (CMG - Get Report) was downgraded to sell from hold at Deutsche Bank. $400 price target. The potential recovery thesis still has several questions, Deutsche said. 

Exelon (EXC - Get Report) was downgraded to sell at Citigroup. $27 price target. The PepCo deal is dilutive to value, Citi said. 

Flagstar Bancorp (FBC - Get Report) was downgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: FBC.

Freeport-McMoRan (FCX - Get Report) was downgraded to sell at Citigroup. The valuation isn't attractive, based on a $4.50 price target, Citi said. 

Fitbit (FIT - Get Report) was downgraded to sector weight at Pacific Crest. The company is facing commoditization and lacks leverage, Pac Crest said. 

Fitbit was downgraded to neutral from overweight at Piper Jaffray. $14 price target. The company offered lower guidance, Piper said. 

Fitbit was downgraded to market perform from outperform at Leerink. $18 price target. Analysts see risk to guidance in the second half of the year, Leerink said. 

Cheniere Energy (LNG - Get Report) was upgraded to buy from neutral at Goldman Sachs. The valuation is attractive, based on a $46 price target. 

SeaWorld Entertainment (SEAS - Get Report) was upgraded to buy at TheStreet Ratings. You can view the full analysis from the report here: SEAS.

SolarCity (SCTY) was downgraded to neutral from overweight at JPMorgan. $29 price target. The company is facing increased risks, JPMorgan said. 

This article was written by a staff member of TheStreet.