I think the market is red by the dump of many people. There are many people bought big amounts of Bitcoin only $ 3,200 and when Bitcoin price has maintained $ 4,000 for several days, they can earn a lot of profit. And now we can see the Bitcoin price is only $ 3600.
I do not think that such a large number of small investors will come up with the same idea at the same time. I believe that this is a intentional action of one or several large investors. I hope that soon these manipulations will end and projects will be able to develop normally.