StockNews.com began coverage on shares of Zosano Pharma (NASDAQ:ZSAN – Get Rating) in a report issued on Saturday. The brokerage issued a sell rating on the biotechnology company’s stock. Separately, BTIG Research downgraded Zosano Pharma from a buy rating to a neutral rating in a report on Wednesday, February 23rd. Zosano Pharma stock opened at […]