Telefônica Brasil S.A. (NYSE:VIV – Free Report) was the target of a large increase in short interest in the month of June. As of June 15th, there was short interest totalling 5,090,000 shares, an increase of 27.6% from the May 31st total of 3,990,000 shares. Approximately 0.3% of the shares of the company are short […]