StockNews.com began coverage on shares of Onconova Therapeutics (NASDAQ:ONTX – Free Report) in a research report released on Wednesday morning. The firm issued a sell rating on the biopharmaceutical company’s stock. Onconova Therapeutics Stock Performance Onconova Therapeutics has a fifty-two week low of $0.55 and a fifty-two week high of $1.45. The stock has a […]