Jumbo S.A. (OTCMKTS:JUMSY – Get Free Report) was the target of a significant growth in short interest in July. As of July 15th, there was short interest totaling 1,331 shares, a growth of 121.8% from the June 30th total of 600 shares. Based on an average daily trading volume, of 1,102 shares, the days-to-cover ratio is presently 1.2 days. Jumbo Stock PerformanceOTCMKTS:JUMSY remained flat at $24.85 on Thursday. Further ReadingReceive News & Ratings for Jumbo Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for Jumbo and related companies with MarketBeat.com's FREE daily email newsletter.