Nothing, except for well... many investors aren't rational, or at the very least, they operate on other rationale. And because of this, it's entirely possible t

Nothing, except for well... many investors aren't rational, or at the very least, they operate on other rationale. And because of this, it's entirely possible the stock price doesn't actually double in your scenario. However, if didn't, it at least would work positively towards the value metrics of the stock.