 Amtech Systems, Inc. NASDAQ:ASYS saw a significant decrease in short interest in June. As of June 30th, there was short interest totalling 24,300 shares, a decrease of 16.8 from the June 15th total of 29,200 shares. Based on an average daily trading volume, of 39,300 shares, the short-interest ratio is currently 0.6 days. Approximately 0.2 ... 