AstraZeneca saw a decline in short interest in January. As of January 15th, there was short interest totaling 5,810,000 shares, a decline of 6.6% from the December 31st total of 6,220,000 shares. Based on an average daily trading volume, of 5,530,000 shares, the short-interest ratio is currently 1.1 days. View AstraZeneca's Short Interest .