SCI Engineered Materials, Inc. (OTCMKTS:SCIA – Get Rating) was the target of a significant drop in short interest in the month of May. As of May 15th, there was short interest totalling 1,000 shares, a drop of 28.6% from the April 30th total of 1,400 shares. Based on an average daily volume of 10,000 shares, […]