Top Analyst Upgrades and Downgrades: Amarin, Amex, Barrick Gold, Cameco, Groupon, ImmunoGen, JPMorgan, Whole Foods and More
The top analyst upgrades, downgrades and other research calls from Thursday include Amarin, American Express, Barrick Gold, Cameco, Groupon, ImmunoGen, JPMorgan and Whole Foods Market.