Editor's Note: Green and red arrows refer to intraday stock price movement.

NEW YORK (

TheStreet

) --

CHANGE IN RATINGS

Analog Devices

(ADI) - Get Analog Devices, Inc. Report

downgraded at Deutsche from Buy to Hold, Deutsche Bank said. Valuation call.

Autodesk

(ADSK) - Get Autodesk, Inc. Report

downgraded at Citigroup from Buy to Hold, Citigroup said. Valuation call, based on a $42 price target.

AK Steel

(AKS) - Get AK Steel Holding Corporation Report

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) - Get Amyris, Inc. Report

downgraded at Morgan Stanley from Overweight to Equal-weight, Morgan Stanley said. Valuation call, based on a $26 price target.

Celanese

(CE) - Get Celanese Corporation Report

rated new Equal-weight at Morgan Stanley. $50 price target. See limited upside to consensus expectations.

Church & Dwight

(CHD) - Get Church & Dwight Co., Inc. Report

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) - Get Eastman Chemical Company Report

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) - Get International Flavors & Fragrances Inc. (IFF) Report

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) - Get Life Storage, Inc. Report

downgraded at Deutsche from Buy to Hold, Deutsche Bank said. Company faces growth headwinds.

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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) - Get Symantec Corporation Report

upgraded at Citigroup from Hold to Buy. $22 price target. Sales should stabilize and the company has potential margin leverage.

AT&T

(T) - Get AT&T Inc. Report

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) - Get Teledyne Technologies Incorporated Report

rated new Buy at Keybanc. $54 price target. Company is leveraged to the aerospace/defense sector.

Tupperware Brands

(TUP) - Get Tupperware Brands Corporation Report

downgraded at Goldman from Buy to Neutral, Goldman Sachs said. Estimates also cut, because of the weak Euro. $57 price target.

Verizon

(VZ) - Get Verizon Communications Inc. Report

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) - Get Verizon Communications Inc. Report

downgraded at Deutsche from Buy to Hold, Deutsche Bank said. Valuation call, based on a $36 price target.

Zions Bancorporation

(ZION) - Get Zions Bancorporation (ZION) Report

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.