China Online Education Group (NYSE:COE) saw a significant growth in short interest in November. As of November 15th, there was short interest totalling 271,800 shares, a growth of 21.9% from the October 31st total of 223,000 shares. Approximately 12.1% of the shares of the stock are short sold. Based on an average daily volume of 635,700 shares, the short-interest ratio is currently 0.4 days. Several institutional investors have recently added to or reduced their stakes in the stock. Jane Street Group LLC acquired a new position in shares of China Online Education Group during the 3rd quarter valued at $114,000....