It depends on how much you are willing to invest. But remember that there is always a risk of losing your money. You should have taken the chance to buy when its price decreased by more than $1000 during this month. For sure you could have earned a huge profit from that. The return that you could expect will depend if you are just going to hold your bitcoins or if you are going to invest it in trading. It is probably more of a long term investment holding bitcoins. But if you are going to trade them with altcoins in exchanges, then you can profit depending on the analysis that you make and the actions that you take.