Virtu Financial, Inc. (NASDAQ:VIRT – Get Free Report) was the target of a large increase in short interest during the month of May. As of May 15th, there was short interest totalling 1,920,000 shares, an increase of 33.3% from the April 30th total of 1,440,000 shares. Approximately 2.3% of the company’s stock are sold short. […]