Received ECASH and it has a value on etherdelta

What to do? Sell oder HODL?
I recently made about 0.5 ETH out of ECash, from my experience after a short time span (a few days) the value of these new tokens often plummet so you 'd better sell now and you'll be able to buy much cheaper once the selloffs have passed. Look at eBTC as an example.
This is a personal piece of advice of course.
My two cents