I also mention into the graph idea an Eliott Wave which can make us think that it will be the last run before a clean correction (the peak of 3.81$ would be the 5th point of an Eliott Wave).
If we have the same volumes as the same run I don't think It will go futher than the TARGET (of 3.81).
Another option would be similar volumes to the previous run of 2.35$. In this case, we can imagine a break of the 4$ but we will need huge volumes.
So the reasonable take profit is 3.81$.
TARGET : 3.81$
This is just an idea, not a trading advice.