For my way, for example "someone rich buying 100 BTC " another people thinking ooo price goes high why not make also so money so also starting buying BTC when the price will goes higher That "rich guy selling that 100 BTC making about 20% of profit and the proce goes down where the rest people also selling the BTC but they not make really same 20% of the profit only 10-5%" rest people "holders" keep btc to wait for the moment but when will be that moment nobody knows for me it reminds a  PIRAMID only people from the top really making money on BTC but its only mu opinion.