Dynavax Technologies Co. (NASDAQ:DVAX – Get Free Report) was the target of a significant growth in short interest in May. As of May 15th, there was short interest totalling 22,700,000 shares, a growth of 15.7% from the April 30th total of 19,620,000 shares. Based on an average daily volume of 2,070,000 shares, the days-to-cover ratio […]