I am not sure how guaranteed the gains are...basically there is a common enemy right now in the form of short sellers. Once they're decimated (ie forced to buy shares at higher prices than they anticipated), I suspect a good deal of novice traders are going to still be holding shares at elevated prices. At that point they're basically holding shares worth very little compared to what they likely paid for them.

The same hoard trading phenomenon seems to be happening with Blackberry. A number of insiders have already dumped shares, meaning anyone buying those shares isn't buying shares from a short seller, they're buying from people who recognize the price is outrageous compared to business fundamentals.

Bottom line, short sellers are definitely going to suffer, but so are a lot of robbinhood kiddies.