NEW YORK (TheStreet) -- RATINGS CHANGES

Armstrong World Industries (AWI) was downgraded at Barclays to equal-weight from overweight. Company-specific issues persist, Barclays said. Twelve-month price target was lowered to $50 from $62.

Bunge (BG) was downgraded at J.P. Morgan to neutral from overweight. Estimates were also cut, as sugar and ethanol prices are down, J.P. Morgan said. Twelve-month price target is $87.

Buffalo Wild Wings (BWLD) was upgraded at Robert Baird to outperform from neutral. Twelve-month price target is $180. Company has pricing power and can continue to deliver sales growth, Robert Baird said.

Dril Quip (DRQ) was upgraded at Morgan Stanley to equal-weight. Valuation call, based on a 12-month price target of $104.

Freeport-McMoRan (FCX - Get Report) was downgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: FCX Ratings Report.

Madison Square Garden (MSG - Get Report) was upgraded at Maxim Group to buy from hold. Twelve-month price target is $85. Clippers deal has boosted valuation across the board, Maxim Group said.

Nabors (NBR) was downgraded at Wells Fargo to market perform from outperform. Expect domestic exploration budgets to be scaled back, Wells Fargo said.

Oceaneering (OII) was downgraded at Morgan Stanley to equal-weight from overweight. Twelve-month price target is $76. Company faces multiple growth headwinds, Morgan Stanley said.

Premiere Global Services (PGI) was downgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: PGI Ratings Report.

Twitter (TWTR - Get Report) was downgraded at RBC Capital to sector perform from outperform. User and usage metrics appear to have stalled, RBC Capital said.

Twitter was downgraded at Nomura to neutral from buy. Twelve-month price target is $45. User metrics fell short of expectations and monetization could be slowing, Nomura said.

Twitter was upgraded at Pivotal Research to hold from sell. Valuation call, based on a 12-month price target of $42, Pivotal Research said.

Vivint Solar (VSLR - Get Report) was initiated at Barclays with an equal-weight rating. Second-largest installer of residential solar in the U.S. is positioned to benefit from rapid near-term growth in the rooftop solar market, Barclays said.

Wright Medical (WMGI) was downgraded at Needham to buy from strong buy. Twelve-month price target is $38. Tornier (TRNX) deal dilutes Augment, Needham said.

Wright Medical was upgraded at RBC Capital to outperform from sector perform. Twelve-month price target is $40. Tornier deal is solid and the company is a leader in a quickly growing market, RBC Capital said.

Editor's note: To see analysts' stock comments and changes to price targets and earnings estimates, go to "Street Notes" which is available only to Real Money subscribers. To find out how to become a subscriber, please click here.

Follow TheStreet on Twitter and become a fan on Facebook.

This article was written by a staff member of TheStreet.