Robinhood is just the latest company in the mix, announcing on Monday that the Securities and Exchange Commission has closed its investigation into the company and will not pursue an enforcement action.

Robinhood said the U.S. securities regulator had closed its probe into the retail trading firm's crypto arm with no action, as it seeks to revamp policing of digital assets since President Donald Trump took office.

Nearly half of Robinhood’s $672 million transaction-based revenue in the fourth quarter came from a 700% rise in revenue tied to crypto trading,