There is no assurance when trading or investing, there is always some risk but with bitcoin its lesser than each btc, bitcoin has been consistent with the value rising up, even if it goes down bitcoin insists and rise up, there is no assurance that the price will still go up after the pump over $3k, but who know there is a possibility that it will go over $5k this year. The main advantage of bitcoin than other crypto is that in bitcoin there is no lose as long as you hold.