VERBIO Vereinigte BioEnergie AG (OTCMKTS:VBVBF – Get Rating) was the target of a significant increase in short interest during the month of May. As of May 31st, there was short interest totalling 145,100 shares, an increase of 29.8% from the May 15th total of 111,800 shares. Based on an average trading volume of 0 shares, […]