Trading can not only increase your holdings x2 or x3, but can also halve them or reduce even more. So best is just to hold. that goes for any coin. If you have 100 Nexium noone can take them from you. No matter if they are worth $100 or $1, they are still 100 Nexium.
there's always a possibility that one day it can be equal 100 diem
but not in this case, at least for now