No, it is to short the stock.

The question is if you can hold out long enough and if the change you predict will happen fast enough.

That can get expensive quickly, so it's not quite the inverse of holding stock where the only downside is how far the stock can drop, not how far it can go up.

The market can stay irrational longer than you can stay solvent. Timing as ever is the key.

Timing the market is a fools game.

Or rather, to short their stock, if you want to make some money off it.

Does Facebook's valuation assume growth that will make them the largest company on the planet?