Acorn Energy, Inc. (OTCMKTS:ACFN – Get Rating) was the target of a large growth in short interest during the month of March. As of March 31st, there was short interest totalling 20,100 shares, a growth of 9,950.0% from the March 15th total of 200 shares. Based on an average daily volume of 310,400 shares, the […]