NEW YORK ( TheStreet) -- CHANGE IN RATINGS:Archer-Daniels-Midland ( ADM) was initiated with an underweight rating at JP Morgan. $28 price target. North American business will likely remain slow, because of poor weather and crops, JP Morgan said. ALLETE ( ALE) was upgraded at DA Davidson to buy from neutral. Extension of renewable tax credits likely to spur Bison 4, DA Davidson said. Applied Materials ( AMAT) was downgraded at JP Morgan to underweight. Stock has run, but semiconductor capex demand should see a prolonged trough, JP Morgan said. Amazon.com ( AMZN) was upgraded at Morgan Stanley from equal-weight to overweight. $325 price target. Company can continue to gain market share over the next several quarters, Morgan Stanley said. Bank of NY Mellon ( BK) was downgraded at Goldman Sachs from neutral to sell. $22 price target. Company faces multiple earnings headwinds, Goldman said. Bruker ( BRKR) was upgraded at ISI Group from neutral to buy. $19 price target. Cost-cutting should boost margins, ISI Group said. Cree ( CREE) was downgraded at Canaccord Genuity to hold from buy. $32 price target. GM expansion from transition of legacy components has largely played out, Canaccord Genuity said. CommVault Systems ( CVLT) was downgraded at Craig Hallum to hold from buy. $72 price target. Simpana 10 risk reward is now in balance, Craig Hallum said. Danaher ( DHR) was upgraded at ISI Group from neutral to buy. $64 price target. Company is leveraged to accelerating emerging markets growth, ISI Group said. Dick's Sporting ( DKS) was upgraded at Janney Montgomery from neutral to buy. Recent share weakness has created an attractive buying opportunity, Janney Montgomery said. Electronic Arts ( EA) was downgraded at Sterne Agee to neutral from buy. Concerns that Street estimates will prove overly optimistic, Sterne Agee said. Finish Line ( FINL) was downgraded at Citigroup to neutral from buy. $20 price target. Near-term uncertainty is likely to continue, Citigroup said. Flower Foods ( FLO) was upgraded at Deutsche Bank from hold to buy. $27 price target. Industry consolidation should help boost profitability, Deutsche said. Harman ( HAR) was upgraded at Robert Baird from neutral to outperform. $65 price target. Company is at a growth inflection point and and the stock should break out from its trading range, Baird said.