I think this is just an effect of the upcoming bitcoin hardfork on april 18. Traders hold more bitcoins to earn more freecoins. Yeah I also think their will be a bull run but after april 18 I'm not that sure 
Or maybe this is because the tax day or rax regulation for bitcoin. Yeah who knows this volatiles chart, everyone want it to be bull run without ending. Anyway, what hard fork is it on april 18?