Benzinga's Top Upgrades, Downgrades For May 8, 2018 By: Benzinga via Benzinga May 08, 2018 at 09:19 AM EDT Top Upgrades Evercore ISI Group upgraded athenahealth, Inc. (NASDAQ: ATHN) from In-Line to Outperform. athenahealth shares ... Read More >> Related Stocks: Andeavor Athena Technology Acquisition Corp Cl A Ceragon Networks Ltd Continental Resources Del Frisco's Restrnt Eldorado Resorts Fiesta Restaurant Gp Financial Engines, Inc. - Common Stock Impinj Inc Infinera Corp Kosmos Energy Ltd Lionheart Holdings Cl A Loma Negra Comp Indu Argentina Sociedad ADR Louisiana-Pacific Corp Mersana Therapeutics Inc Nevro Corp New Gold Nice Ltd ADR Pinnacle West Capital Red Rock Resorts Inc Sapiens Intl Corp NV Xxl Energy Corp Zillow Grp Inc Cl A