StockNews.com started coverage on shares of Navidea Biopharmaceuticals (NYSE:NAVB – Free Report) in a research note released on Monday morning. The firm issued a sell rating on the stock. Navidea Biopharmaceuticals Stock Performance Shares of NAVB opened at $0.04 on Monday. The company has a 50-day simple moving average of $0.04 and a 200-day simple […]