NEW YORK (

TheStreet

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CHANGE IN RATINGS

Alcoa

(AA) - Get Alcoa Corp. Report

was downgraded at J.P. Morgan to neutral from overweight. $9 price target. Estimates were also cut, given lower expected aluminum prices, J.P. Morgan said.

Assurant

(AIZ) - Get Assurant, Inc. Report

was downgraded at Bank of America/Merrill Lynch to underperform from neutral. Valuation call, based on a $51 price target, Bank of America/Merrill Lynch said.

Autonation

(AN) - Get AutoNation, Inc. Report

was upgraded at Credit Suisse to outperform from neutral. Valuation is low and the company has leverage potential in parts and service, Credit Suisse said. $53 price target.

Arm Holdings

(ARMH)

was upgraded at UBS to buy from neutral. The 30% pullback from the peak in the stock is overdone, UBS said.

Read: Yahoo! Targets Growth Through Acquisitions

Comerica

(CMA) - Get Comerica Incorporated Report

was upgraded at Citigroup to neutral from sell. Precipitous change in interest rates, said Citigroup.

Continental Materials

(CUO) - Get Continental Materials Corporation Report

was downgraded to hold at TheStreet Ratings.

First Niagara

(FNFG)

was downgraded at Sterne Agee to neutral from buy. Earnings likely will crimp capital ratios, Sterne Agee said.

Global Geophysical Services

(GGS)

TheStreet Recommends

was downgraded to sell at TheStreet Ratings.

New York Times

(NYT) - Get New York Times Company Class A Report

was upgraded at Lazard Capital Markets to neutral from sell. The company should benefit from higher interest rates and a better real estate market, Lazard Capital Markets said.

Pinnacle West

(PNW) - Get Pinnacle West Capital Corporation Report

was downgraded at Williams to hold from buy. Valuation call, based on a $58 price target, Williams said.

Read: The Deal: Steep Price to Verizon Wireless Buyout

Werner

(WERN) - Get Werner Enterprises, Inc. Report

was downgraded at Wunderlich to hold from buy. $25 price target. Anticipate negative earnings growth for a fourth consecutive quarter, Wunderlich said.

Zions Bancorporation

(ZION) - Get Zions Bancorporation (ZION) Report

was upgraded at Citigroup to buy from neutral given valuation. Consensus estimates don't correctly reflect the capital structure simplification story, Citi said.

STOCK COMMENTS/EPS CHANGES

Blackrock

(BLK) - Get BlackRock, Inc. Report

estimates, price target were cut at Sterne Agee. Shares are now seen reaching $286. Estimates were also reduced, given lackluster industry fund flows, Sterne Agee said. Neutral rating.

Read: Doctors Called to Act on Financial Abuse of the Elderly

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This article was written by a staff member of TheStreet.