RATINGS CHANGES

Analog Devices (ADI) - Get Report was downgraded to neutral from buy at Citigroup. The valuation is less attractive, based on a $68 price target, Citi said. 

Akamai (AKAM) - Get Report was downgraded to sector weight at Pacific Crest. The company is seeing lower demand from two big media customers, Pac Crest said. 

Alaska Air (ALK) - Get Report was upgraded to overweight from neutral at JPMorgan. $78.50 price target. The company should exceed consensus expectations in the coming quarters, JPMorgan said. 

Coach (COH) was upgraded to outperform from neutral at Credit Suisse. $47 price target. Earnings estimates were also increased, as the brand appears to be stabilizing, Credit Suisse said. 

Domino's Pizza (DPZ) - Get Report was upgraded to buy at TheStreet Ratings. You can view the full analysis from the report here: DPZ.

Finish Line (FINL) was upgraded to buy at TheStreet Ratings. You can view the full analysis from the report here: FINL.

Globus Medical (GMED) - Get Report was downgraded to market perform from outperform at Wells Fargo. Negative operating momentum could continue, Wells said. 

Globus Medical was downgraded to hold from buy at Canaccord Genuity. $28 price target. The U.S. business has been slow to regain momentum, Canaccord said. 

Globus Medical was downgraded to market perform from outperform at Leerink. $27 price target. The company has a weaker organic growth outlook, Leerink said. 

Southwest Airlines(LUV) - Get Report was downgraded to neutral from overweight at JPMorgan. $34 price target. The company was also cut from the Analyst Focus list. The company is facing price competition and relatively large labor hurdles, JPMorgan said. 

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

Potlatch (PCH) - Get Report was downgraded to market perform from outperform at DA Davidson. The valuation is less attractive, based on a $40 price target, Davidson said. 

Robert Half (RHI) - Get Report was downgraded to market perform from outperform at BMO Capital. $36 price target. Earnings estimates were also reduced, as management lowered its guidance, BMO said. 

Seattle Genetics (SGEN) - Get Report was downgraded to hold at Cantor Fitzgerald. The previous buy rating was based on a $43 price target, Cantor said. 

Terraform (TERP) - Get Report was downgraded to perform from outperform at Oppenheimer. The company is facing balance sheet and cash flow uncertainty, Oppenheimer said. 

Twitter (TWTR) - Get Report was downgraded to hold from buy at Cantor Fitzgerald. $18 price target. The company had a disappointing quarter and cut guidance, Cantor said. 

Twitter (TWTR) - Get Report was downgraded to hold from buy at Canaccord Genuity. $16 price target. The company's potential turnaround is being pushed out, Canaccord said. 

This article was written by a staff member of TheStreet.