China Online Education Group (NYSE:COE) was the recipient of a large increase in short interest in September. As of September 15th, there was short interest totalling 350,300 shares, an increase of 78.7% from the August 31st total of 196,000 shares. Based on an average daily volume of 658,400 shares, the days-to-cover ratio is currently 0.5 days. Approximately 15.6% of the shares of the company are short sold. Shares of COE stock traded down $0.09 during trading hours on Friday, reaching $2.52. 442,657 shares of the stock were exchanged, compared to its average volume of 288,589. The business’s fifty day moving...