NEW YORK ( TheStreet) -- CHANGE IN RATINGSAllegiant Travel ( ALGT) downgraded at Sterne Agee to Neutral, Sterne Agee said. Valuation call, based on a $74 price target. TD Ameritrade ( AMTD) upgraded at BGB from Sell to Hold, BGB Securities said. Valuation call, based on a $15.50 price target. Atmel ( ATML) rated new Outperform at Pacific Crest. Market expectations are low and the company has had recent design wins. $9 price target. AptarGroup ( ATR) downgraded at Keybanc from Buy to Hold, Keybanc said. Company cut guidance because of Europe. American Express ( AXP) upgraded at Nomura to Buy, Nomura said. New analyst believes that fee-based initiatives can help drive growth. Babcock & Wilcox ( BWC) upgraded to buy at TheStreet Ratings. Celanese ( CE) upgraded at UBS to Buy from Neutral, UBS said. $49 price target. Ethanol technology provides upside and stock catalyst. Capital One ( COF) downgraded at Nomura to Neutral, Nomura said. New analyst believes that the portfolio runoff and weak loan growth will weigh on the stock. Cypress Semiconductor ( CY) rated new Sector Perform at Pacific Crest. Company is leveraged to the lower end fo the business. Darling ( DAR) rated new Market Perform at JMP. Valuation call. Enbridge Energy Partners ( EEP) upgraded to buy at TheStreet Ratings. Eaton Vance ( EV) downgraded at BofA/Merrill from Neutral to Underperform, Bank of America/Merrill Lynch said. Valuation call, based on a $29 price target. Fiserv ( FISV) downgraded at Baird from Outperform to Neutral, Robert Baird said. Valuation call, based on an $80 price target. Las Vegas Sands ( LVS) rated new Buy at Cantor. $57 price target. Company remains leveraged to long-term growth potential in Macau. Mako Surgical ( MAKO) downgraded at Goldman from Buy to Neutral, Goldman Sachs said. $17 price target. Thesis appears broken and the company lacks near-term catalysts. MGM Resorts ( MGM) rated new Buy at Cantor. $14 price target. Macau should continue to grow, based on growing prosperity in China. Southwestern Energy ( SWN) upgraded at Stifel from Hold to Buy, Stifel Nicolaus said. $38 price target. New oil plays could drive growth. T. Rowe Price ( TROW) upgraded at BofA/Merrill to Buy, Bank of America/Merrill Lynch said. $74 price target. Company's funds continue to outperform the broader market.