Ero Copper (NYSE:ERO – Get Free Report) announced its quarterly earnings data on Wednesday. Ero Copper had a return on equity of 30.32% and a net margin of 29.79%. Ero Copper Stock Up 5.7%Shares of NYSE:ERO traded up $1.78 during trading hours on Friday, reaching $32.88. Get Ero Copper alerts:Institutional Investors Weigh In On Ero CopperA number of institutional investors and hedge funds have recently added to or reduced their stakes in ERO. Featured StoriesReceive News & Ratings for Ero Copper Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for Ero Copper and related companies with MarketBeat.com's FREE daily email newsletter.