RATINGS CHANGES

AK Steel (AKS) - Get Report was upgraded to buy from hold at Jefferies. $6.25 price target. Domestic steel prices have bottomed and the company has cleaned up its balance sheet, Jefferies said. 

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

Bemis (BMS) - Get Report was downgraded to neutral from buy at Bank of America/Merrill Lynch. $54 price target. Earnings quality is declining, analysts said. 

Cardinal Health (CAH) - Get Report was downgraded to neutral from outperform at Robert Baird. $82 price target. The company is facing increased competition, Baird said. 

California Water (CWT) - Get Report was downgraded to underweight at Barclays. $28 price target. Earnings estimates were also cut, given a reduction to the base rate, Barclays said.  

GNC (GNC) - Get Report was downgraded to underperform from neutral at Bank of America/Merrill Lynch. $13 price target. Business trends continue to decline and the analysts see a lower chance of a takeout. 

Coca-Cola (KO) - Get Report was downgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: KO.

L-3 Communications (LLL) - Get Report was downgraded to hold at Drexel Hamilton. The valuation is less attractive, as growth is slowing, Drexel said. 

Level 3 Communications (LVLT) was upgraded to outperform at Oppenheimer. $60 price target. Possible CenturyLink deal would be attractive, Oppenheimer said. 

McKesson (MCK) - Get Report was downgraded to market perform at Leerink Partners. $60 price target. Pricing is deflating because of increased competition, Leerink said. 

McKesson was downgraded to hold from buy at Deutsche Bank. $153 price target. The company cut guidance and lacks near-term visibility, Deutsche said. 

Mead Johnson (MJN) was downgraded to neutral from overweight at JPMorgan. $75 price target. Management has reduced guidance five times in the past six quarters, JPMorgan said. 

ServiceNow (NOW) - Get Report was upgraded to outperform at BMO Capital. $97 price target. The company appears to be firing on all cylinders, BMO said. 

Old Dominion (ODFL) - Get Report was downgraded to underperform from neutral at Bank of America/Merrill Lynch. $73 price target. The valuation is less attractive, as the stock is trading at 18.5x expected 2017 earnings, analysts said. 

Proto Labs (PRLB) - Get Report was downgraded to hold from buy at Canaccord Genuity. $47 price target. Increased competition may delay a return to historical growth rates, Canaccord said. 

Raymond James (RJF) - Get Report was downgraded to market perform from outperform at JMP Securities. The valuation is less attractive, based on a $70 price target, JMP said. 

Qualcomm (QCOM) - Get Report was upgraded to market perform from underperform at BMO Capital. The valuation is more attractive, based on a $70 price target, BMO said. 

Tiffany & Co. (TIF) - Get Report was upgraded to buy at TheStreet Ratings. You can view the full analysis from the report here: TIF.

Twitter (TWTR) - Get Report was upgraded to perform from underperform at Oppenheimer. The valuation has settled with the fundamental outlook, Oppenheimer said. 

World Wrestling (WWE) - Get Report was downgraded to sector weight at Pacific Crest. The company will not likely be able to achieve long-term U.S. subscriber goals, Pac Crest said. 

This article was written by a staff member of TheStreet.