That’s supposed to be a link to CalvinBall, but it didn’t quite work right.

I don't believe it's possible to come up with a fixed set of rules that protects against market manipulation in both directions: the more one attempts to manipulation-proof in one direction, the easier it gets to manipulate in the opposite.

Wolfe Research firm is developing a tool that can scan large volumes of language text on subreddit forums like wallstreetbets and assess which stocks are being targeted by retail traders. The article is currently at Market Watch.

In this particular case I’m not sure actually; they changed contracts to allow a later date.