Ark worth right now 3.74$.
If we look at his charts from the last week, we can see he went through some up and down and he is not very stabilize.
His volume changes also very often by couple of millions.
I think this coin is not the best choice right now because of all the non stabilization he has.
But if you want to invest it this is the time becuase his volume will go up today, but it will give you just an earning of couple percents something like 5%.