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.
This article was written by a staff member of TheStreet.

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