NEW YORK ( TheStreet) -- CHANGE IN RATINGS Apple ( AAPL) downgraded to Neutral from Buy at Citigroup with a $575 price target. Near-term cuts bring risks into focus. AOL ( AOL) downgraded at TheStreet Ratings to hold. Baker Hughes ( BHI) was downgraded to Equal-Weight at Morgan Stanley with a $50 price target. Activity has deteriorated faster than expected in North America. Cepheid ( CPHD) was initiated as a Buy at Bonk of America/Merrill Lynch with a $40 price target. Company is a leader in a quickly growing market. CBOE Holdings ( CBOE) downgraded at TheStreet Ratings to hold. Dean Foods ( DF) was initiated with an Overweight rating at Morgan Stanley with a $22 price target. Expect stability in the fluid milk business and the company is cutting costs. Esterline ( ESL) was initiated with a Neutral rating at Goldman Sachs with a $73 price target. Margins and returns are at the low end of the industry. Informatica ( INFA) was upgraded from Neutral to Overweight at Piper Jaffray with a $36 price target. Worst appears behind the company in Europe. Molycorp ( MCP) was initiated with a Neutral rating at Goldman Sachs with an $11 price target. Company lacks visibility on the cost side. ON Semiconductor ( ONNN) was upgraded from Neutral to Buy at Sterne Agee with a $9 price target. Company has multiple potential near-term catalysts. Pool ( POOL) was initiated with a Buy rating at Keybanc with a $49 price target. Company deserves a premium valuation. Post ( POST) was initiated with a Buy rating at Goldman Sachs with a $40 price target. Company is turning itself around. Regency Center ( REG) was downgraded to Neutral from Buy at Citigroup with a $50 price target. Valuation call. Sandridge ( SD) was downgraded from Hold to Sell at Canaccord Genuity with a $4 price target. Do not expect a takeover bid to materialize. Tanger Factory ( SKT) was upgraded to Buy from Neutral at Citigroup with a $37.50 price target. Pure play outlet portfolio shoudl drive NOI growth. Simon Property Group ( SPG) was upgraded to Buy from Neutral at Citigroup with a $173 price target. Mall and outlet platform should provide solid NOI growth. Tenet Healthcare ( THC) was upgraded from Hold to Buy at Deutsche Bank with a $38 price target. Business mix and margins are improving.