NEW YORK ( TheStreet) -- CHANGE IN RATINGS:Alon USA Partners ( ALDW) was initiated with a neutral rating at Citigroup. $20 price target. Big refining payout priced into mid-cycle estimates, Citi said. Ameriprise ( AMP) was downgraded at Credit Suisse from outperform to neutral. $67 price target. Valuation call, as the stock is up 16% over the past two months, Credit Suisse said. Aptargroup ( ATR) was upgraded at Robert Baird from neutral to outperform. $58 price target. Acquisition should add to earnings and the company is cutting costs, Baird said. AutoZone ( AZO) was downgraded at Morgan Stanley to underweight from equal-weight. $340 price target. Exposure to payroll tax expiration and slowing DIFM sales, Morgan Stanley said. Baker Hughes ( BHI) was downgraded at Sterne Agee to neutral from buy. $46 price target. Limited near-term catalysts and concerns over profitability in Latin America, Sterne Agee said. Ball ( BLL) was downgraded at Robert Baird from outperform to neutral. Valuation call, based on a $48 price target, Baird said. Celgene ( CELG) was upgraded at Piper Jaffray to overweight from neutral. $111 price target. Successful pipeline reduces reliance on Revlimid, Piper Jaffray said. DDR Corp. ( DDR) was downgraded at Jefferies to hold from buy. $17 price target. Key catalyst has now occurred, Jefferies said. Deckers ( DECK) was downgraded at Robert Baird from outperform to neutral. $45 price target. Warmer winter weather could hurt Ugg sales, Baird said. EMC Corp. ( EMC) was downgraded at William Blair to market perform from outperform. Cyclical and secular headwinds to storage industry growth in 2013, William Blair said. Emerson Electric ( EMR) was downgraded at Morgan Stanley to equal-weight. Valuation call, based on a $62 price target, Morgan Stanley said. Equity Residential ( EQR) were upgraded at Jefferies to buy from hold. $64 price target. Transformational story gains momentum, Jefferies said. Buy rating. Fusion-io ( FIO) was downgraded at William Blair to market perform from outperform. Slower enterprise bookings and lackluster software growth, William Blair said. Genworth ( GNW) was downgraded at Credit Suisse from neutral to underperform. $7 price target. Valuation call, as the stock has doubled since the summer, Credit Suisse said.