iShares Asia 50 ETF (NASDAQ:AIA - Get Rating) was the recipient of a large increase in short interest in the month of August. As of August 15th, there was short interest totalling 317,200 shares, an increase of 1,267.2% from the July 31st total of 23,200 shares. Based on an average daily volume of 128,200 shares, the short-interest ratio is currently 2.5 days.