Editor's Note: Green and red arrows refer to intraday stock price movement.NEW YORK ( TheStreet) -- CHANGE IN RATINGS Analog Devices ( ADI) downgraded at Deutsche from Buy to Hold, Deutsche Bank said. Valuation call. Autodesk ( ADSK) downgraded at Citigroup from Buy to Hold, Citigroup said. Valuation call, based on a $42 price target. AK Steel ( AKS) downgraded at UBS from Neutral to Sell, UBS said. $13 price target. Company has less leverage to higher steel prices, given its fixed-price contracts. Amyris ( AMRS) downgraded at Morgan Stanley from Overweight to Equal-weight, Morgan Stanley said. Valuation call, based on a $26 price target. Celanese ( CE) rated new Equal-weight at Morgan Stanley. $50 price target. See limited upside to consensus expectations. Church & Dwight ( CHD) upgraded at Goldman from Neutral to Buy, Goldman Sachs said. $81 price target. Estimates also boosted, as the company can gain market share. Eastman Chemical ( EMN) rated new Overweight at Morgan Stanley. $110 price target. Consensus estimates will likely move higher around the company's upcoming analyst meeting. International Flavors ( IFF) downgraded at Keybanc from Buy to Hold, Keybanc said. Company is a more defensive play. US Airways ( LCC) downgraded at Soleil from Buy to Hold, Soleil Securities said. $12 price target. Estimates also cut, given rising fuel prices. LSI ( LSI) downgraded at Deutsche from Buy to Hold, Deutsche Bank said. Company faces growth headwinds. QLogic ( QLGC) downgraded at Canaccord from Buy to Hold, Canaccord Adams said. $18 price target. Market share and margins appear to have peaked for the time being. Sigma-Aldrich ( SIAL) downgraded at Keybanc from Buy to Hold, Keybanc said. Company lacks above-average growth potential. Sara Lee ( SLE) upgraded at Argus from Sell to Hold, Argus Research said. Company has restructured its product portfolio for the better. Sandisk ( SNDK) downgraded at Deutsche from Buy to Hold, Deutsche Bank said. Valuation call. Stillwater Mining Company ( SWC) initiated at Credit Suisse with an Outperform rating and $28 price target. The Palladium pure play offers growth and exploration, Credit Suisse said. Symantec ( SYMC) upgraded at Citigroup from Hold to Buy. $22 price target. Sales should stabilize and the company has potential margin leverage. AT&T ( T) downgraded at Goldman to Neutral, Goldman Sachs said. $32 price target. Company will likely grow slower than VZ in the near term. Teledyne Technologies ( TDY) rated new Buy at Keybanc. $54 price target. Company is leveraged to the aerospace/defense sector. Tupperware Brands ( TUP) downgraded at Goldman from Buy to Neutral, Goldman Sachs said. Estimates also cut, because of the weak Euro. $57 price target. Verizon ( VZ) upgraded at Goldman to Buy, Goldman Sachs said. Consensus estimates are not factoring in the company's potential wireless growth. $42 price target. Verizon ( VZ) downgraded at Deutsche from Buy to Hold, Deutsche Bank said. Valuation call, based on a $36 price target. Zions Bancorporation ( ZION) downgraded at Sterne Agee from Neutral to Sell, Sterne Agee said. $20 price target. Company is not in the position to repay TARP yet. Estimates also cut.