NEW YORK (TheStreet) -- RATINGS CHANGES

Adobe (ADBE) - Get Report was upgraded to buy at TheStreet Ratings. You can view the full analysis from the report here: ADBE Ratings Report.

Sothebys (BID) - Get Report was downgraded to hold at TheStreet Ratings. You can view the full analysis from the report here: BID Ratings Report.

Cobalt Energy (CIE) was downgraded at Goldman Sachs to neutral from buy. Twelve-month price target is $9. See lower value for the company's deep-water business, Goldman Sachs said.

Darden (DRI) - Get Report was upgraded at Telsey Advisory to market perform. Twelve-month price target is $54. Company is attempting to turn the business around and should benefit from improving industry sales, Telsey Advisory.

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Entergy (ETR) - Get Report was upgraded at Morgan Stanley to equal-weight. Twelve-month price target is $91. Favorable legal decision means that Indian Point nuclear plant will likely remain online, Morgan Stanley said.

ServiceNow (NOW) - Get Report was upgraded at RBC Capital to Top Pick from outperform. Twelve-month price target is $80. Recent meeting with management confirms the company is a core software holding, RBC Capital said.

PG&E (PCG) - Get Report was upgraded at J.P. Morgan to overweight. Regulatory outlook has improved and the company trades at a more reasonable valuation, J.P. Morgan said.

Twitter (TWTR) - Get Report was initiated at JMP Securities with a market outperform rating. Twitter's strong brand and active user base contribute to it being firmly ingrained in global culture, JMP Securities said. Twelve-month price target is $49.

Editor's note: To see analysts' stock comments and changes to price targets and earnings estimates, go to "Street Notes," which is available only to Real Money subscribers. To find out how to become a subscriber, please click here.

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This article was written by a staff member of TheStreet.