Invesco FTSE RAFI US 1500 Small-Mid ETF (NASDAQ:PRFZ – Get Free Report) saw a significant increase in short interest in the month of April. As of April 15th, there was short interest totalling 15,200 shares, an increase of 74.7% from the March 31st total of 8,700 shares. Based on an average daily trading volume, of […]