NEW YORK ( TheStreet) -- CHANGE IN RATINGS Alcoa ( AA) 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) 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) 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. CMA) was upgraded at Citigroup to neutral from sell. Precipitous change in interest rates, said Citigroup. Continental Materials ( CUO) 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) was downgraded to sell at TheStreet Ratings. New York Times ( NYT) 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) was downgraded at Williams to hold from buy. Valuation call, based on a $58 price target, Williams said. WERN) 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) was upgraded at Citigroup to buy from neutral given valuation. Consensus estimates don't correctly reflect the capital structure simplification story, Citi said.