AK Steel ( AKS) upgraded at Goldman Sachs to Buy from Neutral based on falling iron ore prices and potential earnings surprise from electrical steel business. Company's variable cost structure, balance sheet and covenant restrictions are favorable compared to peers including U.S. Steel ( X). Price target raised to $12 from $6.50.

Brocade ( BRCD) upgraded at Piper Jaffray to Buy from Neutral based on likely expansion of relationship with IBM. Believe expanded OEM agreement will drive strong revenue growth in 2010 and that debt concerns are overblown. Price target raised to $6 from $4. ( CRM) upgraded at UBS. Rating raised to Buy from Sell. Price target raised to $44 from $21. Maintains fiscal 2009 EPS estimates of $0.34.

eBay ( EBAY) downgraded at Collins Stewart to Sell. $12 price target. Stock is up 50% in the past 5 weeks, with no signs of fundamental business improvement.

Eaton ( ETN) downgraded at UBS. Rating lowered to Neutral from Buy. Price target raised to $44 from $37. Maintains 2009 EPS estimates of $3.75.

Corning ( GLW) downgraded at Oppenheimer from Outperform to Perform. Company should post strong near-term earnings, but the stock has already traded through the $15 price target.

Intuit ( INTU) downgraded at UBS from Buy to Neutral. $28 price target. Strong tax season is almost over, marking the end of a major potential catalyst.

Limited Brands ( LTD) downgraded at Citigroup from Buy to Hold. $10 price target. Valuation call, as the stock is up 36% since Feb. 20.

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