Those who dug deep into the trenches of crypto-investing are looking to send their BTC into speculations of private nature and various investment funds. When large traders do this, it seems like the BTC market isnt saturated enough, and there is a shortage going on. Those looking to buy and trade this crypto then get the impression that there isnt enough of it circulating, which spikes up the price. Changes like these are felt on digital currencies financial market because theres a limited amount of BTC to be dug up. When significant investments think that the moment is right for the next spike in the price, they pull their BTC from the exchanges. Now you know that this is what happens when you see that this virtual currencys cost goes up.