RATINGS CHANGES

Alexion (ALXN - Get Report) was upgraded to outperform from neutral at Credit Suisse. The valuation is more attractive, based on a $165 price target, Credit Suisse said. 

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

Baker Hughes (BHI) was downgraded to hold from buy at GMP Securities. Consensus earnings estimates appear too high, GMP said. 

CalAtlantic (CAA) was upgraded to buy from neutral at MKM Partners. $47 price target. The company is positioned well and offers good value, MKM said. 

Chubb (CB - Get Report) was downgraded to market perform at BMO Capital. $136 price target. The valuation is less attractive, as the stock has outperformed the market by 25% over the past year, BMO said. 

Cracker Barrel (CBRL - Get Report) was downgraded to underperform from neutral at Bank of America/Merrill Lynch. The valuation is less attractive, based on a $140 price target, analysts said. 

ConocoPhillips (COP - Get Report) was upgraded to neutral from underweight at JPMorgan. The valuation is more attractive, with shares down 9% on the year, JPMorgan said. 

DSW (DSW) was upgraded to market perform from underperform at Wells Fargo. The company lacks near-term potential downside catalysts, Wells said. 

GameStop (GME - Get Report) was upgraded to buy from neutral at Bank of America/Merrill Lynch. $35 price target. The company is inexpensive and has multiple potential earnings drivers, analysts said. 

Horizon Pharma (HZNP - Get Report) was upgraded to equal-weight from underweight at Morgan Stanley. $24 price target. The company is inexpensive and has multiple potential catalysts, Morgan Stanley said. 

MDC Holdings (MDC - Get Report) was upgraded to buy at TheStreet Holdings. You can view the full analysis from the report here: MDC.

Manitowoc (MTW - Get Report) was upgraded to outperform at William Blair. $21 price target. The company has organic growth potential and can expand margins, William Blair said. 

Patterson-UTI (PTEN - Get Report) was upgraded to buy from hold at Jefferies. The valuation is more attractive, based on a $25 price target, Jefferies said. 

Toll Brothers (TOL - Get Report) was downgraded to neutral from outperform at Credit Suisse. The company is leveraged to slower homebuilder buyer traffic, Credit Suisse said. 

Viacom (VIAB - Get Report) was downgraded to underperform from market perform at Wells Fargo. Earnings estimates were also cut, given lower affiliate fees, Wells said. 

This article was written by a staff member of TheStreet.