RATINGS CHANGES

Alaska Air (ALK - Get Report) was downgraded to hold from buy at Stifel Nicolaus. The valuation is no longer as attractive, given the stock's 38% rally in 2015, Stifel said. 

American Express (AXP - Get Report) was initiated with a market perform rating at JMP Securities based on its current valuation. 

Booz Allen Hamilton (BAH - Get Report) was upgraded to outperform from market perform at William Blair. Revenue growth should begin to accelerate in the next year or two, William Blair said. 

Chipotle Mexican Grill (CMG - Get Report) was downgraded to neutral from overweight at JPMorgan. $555 price target. New food safety issues will likely continue to pressure business, JPMorgan said. 

Catalent (CTLT - Get Report) was downgraded to market perform from outperform at Wells Fargo. The company faces multiple growth headwinds, Wells said. 

Energen (EGN) was downgraded to market perform from outperform at BMO Capital. $55 price target. The company is leveraged to depressed energy commodity prices, BMO said. 

FirstEnergy (FE - Get Report) was upgraded to buy at TheStreet Ratings. 

NetApp (NTAP - Get Report) was downgraded to sector perform from outperform at RBC Capital Markets. $28 price target. It's deal to acquire SolidFire will dilute NetApp's earnings, RBC said. 

PulteGroup (PHM - Get Report) was downgraded to neutral from buy at Sterne Agee. $18 price target. Estimates were also cut, given expectations for lower margins and a delay in buybacks, Sterne Agee said. 

Select Comfort (SCSS) was downgraded to neutral from overweight at Piper Jaffray. $22 price target. ERP software issues will likely persist and affect sales into 2016, Piper said. 

Whiting Petroleum (WLL - Get Report) was downgraded to market perform from outperform at BMO Capital. $13 price target. The company will continue to be hurt by depressed commodity prices, BMO said. 

World Point Terminals (WPT) was downgraded to sell at TheStreet Ratings.

This article was written by a staff member of TheStreet.