Pan American Silver Corp. (NASDAQ:PAAS) saw a large increase in short interest in the month of April. As of April 15th, there was short interest totalling 4,046,456 shares, an increase of 22.6% from the March 31st total of 3,300,296 shares, Marketbeat.com reports. Currently, 2.7% of the company’s shares are short sold. Based on an average […]