NEW YORK ( TheStreet) -- CHANGE IN RATINGS Autodesk ( ADSK) downgraded at BofA/Merrill to Underperform, Bank of America/Merrill Lynch said. $32 price target. Estimates also cut, as growth headwinds will likely persist. Autodesk downgraded at Canaccord to Hold. $32 price target. Estimates also cut, given the company's new guidance. Autodesk downgraded at JP Morgan from Overweight to Neutral, JP Morgan said. $32.50 price target. Growth thesis has eroded. American Eagle ( AEO) upgraded at BofA/Merrill from Underperform to Neutral, Bank of America/Merrill Lynch said. $24 price target. Estimates also boosted, given lower competitive pressures. Alexion Pharmaceuticals ( ALXN) rated new Hold at ThinkEquity. $105 price target. Soliris sales growth may begin to mature. Aruba Networks ( ARUN) downgraded to sell at TheStreet Ratings. Sothebys ( BID) upgraded to buy at TheStreet Ratings. Big Lots ( BIG) downgraded at Benchmark from Buy to Hold, Benchmark said. $33 price target. Consumers are seeing lower discretionary income. Bristol-Myers ( BMY) upgraded at BofA/Merrill to Buy, Bank of America/Merrill Lynch said. $36 price target. Valuation call, as the stock is down 9% year-to-date. Federated Investors ( FII) upgraded at Citigroup to Buy, Citigroup said. $25 price target. High money market exposure is a plus in the current environment. Merck ( MRK) downgraded at BofA/Merrill from Buy to Neutral, Bank of America/Merrill Lynch said. $45 price target. Valuation call, as the stock is up 14% year-to-date. Swift Transportation ( SWFT) rated new Hold at Dahlman. Have near-term concerns about the trucking industry. TCF Financial ( TCB) upgraded at BMO to Outperform, BMO Capital said. $13 price target. Management is successfully turning the business around. Tripadvisor ( TRIP) upgraded at Citigroup from Neutral to Buy. $44 price target. Valuation call, as the stock is down 30% from its July highs.