NEW YORK ( TheStreet) -- CHANGE IN RATINGS Arch Coal ( ACI) was upgraded at Goldman Sachs from Sell. Valuation call, based on an $8 price target, Goldman said. Assured Guaranty ( AGO) was upgraded at UBS to Buy from Neutral. $18 price target. Favorable risk/reward, UBS said. Alere ( ALR) was downgraded at Capstone Investments from Buy to Hold. Company lacks near-term visibility, Capstone said. Aeropostale ( ARO) was upgraded at Wells Fargo to Market Perform. Business trends appear to be improving, Wells Fargo said. Baker Hughes ( BHI) was downgraded at Societe Generale from Buy to Hold. $47 price target. Company is seeing lower margins in North America, Societe Generale said. CACI was upgraded from Underweight to Neutral at JP Morgan. $52 price target. Stock has declined 29% since earnings, JP Morgan said. Carefusion ( CFN) was upgraded at CLSA from Outperform to Buy. Expect strong 2013 guidance from management, CLSA said. $30 price target. Cinemark ( CNK) was initiated with a Buy rating at Wunderlich. Valuation call, based on a $30 price target. Duke Energy ( DUK) was upgraded at UBS to Buy from Neutral. $24 price target. Consolidated company creates scale and value creation potential, UBS said. Eaton Vance ( EV) was upgraded at Citigroup to Neutral from Sell. $23.50 price target. Shares approaching appropriate valuation, Citi said. Express ( EXPR) was initiated with a Neutral rating at JP Morgan. $20 price target. Company lacks near-term catalysts, JP Morgan said. 1-800-Flowers ( FLWS) was upgraded to Buy at TheStreet Ratings. Forum Energy ( FET) was initiated with a Buy rating at Deutsche Bank. $30 price target. Company is leveraged to strong secular growth markets, Deutsche said. Green Dot ( GDOT) was downgraded at Morgan Stanley from Overweight to Equal-weight. $25 price target. Company is facing regulatory and competitive pressures, Morgan Stanley said. Heico ( HEI) was upgraded at Bank of America/Merrill Lynch to Buy. Valuation call, based on a $54 price target, BofA/Merrill said. Human Genome ( HGSI) was downgraded at BMO Capital to Market Perform. $13 price target. GSK may drop its bid for the company, BMO Capital said. Hyatt Hotels Corp. ( H) was downgraded to Hold at TheStreet Ratings. Knight Transportation ( KNX) was upgraded at Sterne Agee. $17 price target. Estimates were also increased, as the company should perform better over the coming quarters, Sterne Agee said.