Financial firms usually require employees to disclose their investments annually so as to make sure they do not have conflicts of interest and are not front running their clients.

There may be specific investments employees are prohibited from owning, but usually there is a reason. Ask your friend "why" his company has placed this BTC restriction on employees.

Possibly your friend made this up because he doesn't want to talk about buying BTC anymore... Or maybe he has misunderstood the company policy. 🤔