Editor's Note: Green and red arrows refer to intraday stock price movement.

NEW YORK ( TheStreet) -- CHANGE IN RATINGS

Archer Daniels Midland ( ADM) downgraded at BofA/Merrill from Buy to Underperform, Bank of America/Merrill Lynchs said. Favorable grains positions could reverse. $32 price target.

American Eagle ( AEO) downgraded at Janney from Buy to Neutral, Janney Montgomery said. $15 price target. Channel checks continue to show weaker demand.

Alkermes ( ALKS) upgraded at Leerink to Outperform, Leerink Swann said. ELN purchase should help augment organic growth potential.

Sotheby's ( BID) downgraded at Craig-Hallum from Buy to Accumulate, Craig-Hallum said. Company is facing increased competition. $50 price target.

Calpine ( CPN) upgraded at Dahlman Rose from Hold to Buy. $20 price target. Company has attractive exposure to California and Texas.

Cisco Systems ( CSCO) rated new Buy at BGC Partners. $24 price target. Company has a solid balance sheet and is leveraged to growth in mobile video demand.

Diodes ( DIOD) downgraded at BMO to Market Perform, BMO Capital Markets said. Valuation call, based on a $34 price target.

FirstEnergy ( FE) price target raised at Citi to $41 from $36. Story improving but valuation reflects catalysts, Citigroup said. Maintain Hold rating.

FirstEnergy ( FE) upgraded at Wells from Market Perform to Outperform, Wells Fargo said. Estimates also boosted, given better power market trends.

Gamco Investors ( GBL) upgraded at BofA/Merrill from Neutral to Buy, Bank of America/Merrill Lynch said. $61 price target. Company is realizing higher organic growth.

GenOn Energy ( GEN) downgraded at Dahlman Rose from Buy to Hold. Valuation call.

Jones Apparel ( JNY) downgraded at Goldman from Neutral to Sell, Goldman Sachs said. $11 price target. Estimates also cut, as the company is facing lower end-market demand.

Medivation ( MDVN) initiated at Citi with a Buy rating and $35 price target. Biopharma with two promising phase 3 trials, Citigroup said.

Mindray Medical ( MR) upgraded at Oppenheimer from Perform to Outperform. $32 price target. Company is seeing better operating momentum, with China driving overseas growth.

Ralcorp ( RAH) downgraded at William Blair from Outperform to Market Perform, William Blair said. Expect little upside potential from the CAG bid.

Rosetta Resources ( ROSE) upgraded at Wunderlich from Hold to Buy, Wunderlich Securities said. $57 price target. Company has the liquidity to launch multiple growth projects.

Smithfield Foods ( SFD) downgraded at BofA/Merrill from Buy to Underperform, Bank of America/Merrill Lynch said. Hog sell off limits earnings upside potential. $20 price target.

Saks ( SKS) upgraded at Goldman from Sell to Neutral, Goldman Sachs said. $12 price target. High-end retailers can better pass along rising input costs.

Tyson Foods ( TSN) downgraded at BofA/Merrill from Buy to Underperform, Bank of America/Merrill Lynch said. $17 price target. Chicken supplies remain high.

Viacom ( VIAB) upgraded at Argus from Hold to Buy, Argus Research said. $65 price target. Company is leveraged to a recovery in advertising.

End of report.
This article was written by a staff member of TheStreet.