ARM saw a increase in short interest during the month of May. As of May 31st, there was short interest totaling 10,080,000 shares, an increase of 19.0% from the May 15th total of 8,470,000 shares. Based on an average daily volume of 9,490,000 shares, the days-to-cover ratio is currently 1.1 days. Approximately 1.0% of the shares of the stock are sold short. View ARM's Short Interest .