Technically, no way to know on that... but for a trade could be OK with as stop below $17.25 A long-term "theme" investment on it "doing great things/making tons of money"... that's different.
Vizio is company that only sell hardware that competes with very similar, and possibly cheaper, products from Korean and Chinese manufacturers. And no customer loyalty. What do you see that makes it a long term play?
when the price is at rock bottom, it doesn't mean it will go to the moon. Always remember that possibility of it going to the moon could be ZERO.