Gut feeling. Sharp rise and drop someone someone saying it is crying for a correction, someone else saying it is due to bitcoin expansion .
manipulations of markets somehow. Pump and dumps always are frauds, is this a pump and dump, do the statistics show that. is it a bubble, does it show that. C'mon pump and dumps are frauds bubbbles are ultimately instigated by fraudsters, who made the most money. look at that. ( your question i'll have to refer back to with true data. but am i talking shit?)
Normally when people say statistics show that "fill-in-the-blank" they often have statistics to support their claims unless they are just pulling facts out of a region that depending on how polite you like your English may be referred to as either the rectum or the fundament.
If you have some masterful statistical analysis showing this was a fraudulent pump and dump, or even a group think driven bubble then I'm sure the more mathematically inclined here would like to see it and read it. Break out your copy of SPSS, Stata, Sage, or whatever your statistical software of choice is and do your best Nate Silver impression.
I'll keep watching while you get worked up over a wee bit of market volatility.