Quantstamp is rolling out as a smart solution to the expensive manual security audits performed to make sure there are no bugs before any ICO goes live.
And not only are they delivering a good, innovative service that as far as I know has no competitors, they are taking good care on their investors as well. By holding the tokens in your own wallet, you will receive some tokens of every ICO that uses Quantstamp for their smart contract audit. That's pretty cool. And that's on top of what I would say is likely to also be gaining some solid gains on the token price itself.
QSP is traded on multiple exchanges as well as Etherdelta. The project was picked up early and mentioned by @Suppoman when it hit the market back in November. Got a spike, calmed down, and then pivked up the pace together with the market in December. Price has been relatively good even in the last bearish weeks. Might be indicating the token is in for a new run when the market goes bull again.