HEPA - BIDU UAL among premarket gainers May, 19 2020 09:20 AM Hepion Pharmaceuticals Inc. Dynavax Technologies (NASDAQ:DVAX) +41% as COVID-19 vaccine trial could start as soon as July.More news on: Dynavax Technologies Corporation, Arbutus Biopharma Corporation, cbdMD, Inc., Stocks on the move, , Read more ...