China Online Education Group (NYSE:COE) saw a significant growth in short interest in September. As of September 30th, there was short interest totalling 490,300 shares, a growth of 40.0% from the September 15th total of 350,300 shares. Approximately 21.9% of the shares of the company are sold short. Based on an average daily trading volume, of 759,500 shares, the days-to-cover ratio is currently 0.6 days. COE stock traded down $0.13 during midday trading on Friday, reaching $2.69. The company had a trading volume of 415,005 shares, compared to its average volume of 294,342. The company has a market capitalization of...