I guess it's because of the price, maybe those who didn't have the opportunity to buy when the price was some what higher last year November and above. People especially day traders to good at taking opportunity when the see one.
And again, with the way the price is going it may hit $4k+, nobody wants to miss out.
4k will happen this weekend. If not, I am giving my merits to charity
Charity works are not bad things to do in the world. Our communities need them badly but not at the expense of your portfolio. You need to wait for more than a week. May be a month or more than that but keep in mind that if you hodl now, by which I mean that if you do not trade the coins for low, you would be able to withdraw with high margin in the days to come.