 Small-cap stocks can be more volatile than larger ones -- something were all aware of after the last few months -- but Chinese online fashion and lifestyle company Mogu NYSE: MOGU is really taking the cake Friday morning. Mogu opened the trading day up by 21 from Thursdays close, then proceeded to rocket to a total of 35 higher before pivoting and plunging sharply. There have been no press releases out of Mogu today, there are no fresh articles about it in the press, and there hasnt been a peep about it from any of Wall Streets analysts. 