Editor’s note: Welcome to Silicon Legal, a regular column looking at the legal issues facing the technology industry and startups. Thanks for reading! We’d love your feedback, so please send thoughts and tips to Hugo Guzman, at [email protected]. Follow Hugo on Twitter @TrveHugoGuzman and connect with him on LinkedIn.

More headaches could be in store for trading app Robinhood, thanks to a new brokerage rule coming in hot after the company’s recent IPO.