Inrad Optics, Inc. (OTCMKTS:INRD – Get Free Report) was the target of a significant growth in short interest in December. As of December 31st, there was short interest totalling 300 shares, a growth of 200.0% from the December 15th total of 100 shares. Based on an average daily volume of 10,400 shares, the days-to-cover ratio […]