Analysts' Actions: IBM ADSK AEO BIG HD

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.

STOCK COMMENTS / EPS CHANGES

Autodesk ( ADSK) numbers lowered at Jefferies. Shares of ADSK now seen reaching $37, Jefferies said. Estimates also lowered on a big step back. Buy rating.

Aruba Networks ( ARUN) numbers upped at Lazard. ARUN estimates were boosted through 2013, Lazard said. Company boosted its guidance. Buy rating and new $24 price target.

Allegheny Technologies ( ATI) numbers cut at Keybanc. ATI estimates were reduced through 2013, Keybanc said. Company is leveraged to slower macro growth. Buy rating and new $45 price target.

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