Shares of Zoetis (NYSE:ZTS) were the target of a significant increase in short interest during the month of September. As of September 15th, there was short interest totalling 7,503,482 shares, an increase of 47.0% from the August 31st total of 5,104,871 shares, Analyst Ratings Net reports. Approximately 1.5% of the company’s shares are short sold. […]