Premarket roundup: Restaurants, EnergySolutions

NEW YORK (AP)--An analyst on Wednesday downgraded Ruth's Hospitality Group Inc. and Morton's Restaurant Group Inc., mainly due to concerns about the weakening economy and consumer and business spending concerns.

SIOUX FALLS, S.D. (AP)--A Friedman Billings Ramsey analyst on Wednesday upgraded Salt Lake City-based nuclear waste disposal company EnergySolutions Inc., saying a recent selloff does not account for future catalysts for growth.

NEW YORK (AP)--Health care products maker Johnson & Johnson scored a $1.2 billion win in a patent dispute with its stent rivals Tuesday, though at least one company has vowed an appeal.

SIOUX FALLS, S.D. (AP)--A Friedman, Billings, Ramsey analyst said Wednesday that the recent announcement of an oil discovery off Brazil in the Campos Basin provides another reason to own shares of oil and gas company and Devon Energy Corp.

NEW YORK (AP)--JPMorgan Securities analyst Jim Ballan on Wednesday cut his rating on American Capital Ltd. to "Underweight" from "Neutral," noting that it may be difficult for the investment firm to cover its dividends going forward.

NEW YORK (AP)--(AP)--A Citi Investment Research analyst lowered his rating on Houston-based electricity provider Reliant Energy Inc. late Tuesday, citing collateral and credit concerns.