Cogent Communications Holdings, Inc. (NASDAQ:CCOI – Get Free Report) saw a large growth in short interest in the month of May. As of May 15th, there was short interest totalling 3,750,000 shares, a growth of 13.0% from the April 30th total of 3,320,000 shares. Based on an average daily volume of 511,700 shares, the days-to-cover […]