Prediction market Kalshi has fined and suspended an editor working for YouTube creator MrBeast over insider trading, marking one of the first public enforcement actions of its kind on the platform.

Kalshi said it has opened 200 investigations into potential violations of its trading rules over the past year, with more than a dozen now classed as active cases.

The company confirmed that two users have been disciplined for breaching its policies.

Artem Kaptur, a video editor for MrBeast, was fined more than $20,000 and suspended for two years after allegedly placing trades based on “material, non-public information” obtained through his role.

Kalshi said its surveillance systems flagged his “near-perfect” and “statistically anomalous” trading wins, with additional alerts raised by users.

A spokesperson for Beast Industries stated that the company “has no tolerance for this behaviour, whether by contestants or our own employees”. The spokesperson added that an independent investigation has been launched and said, “We welcome Kalshi – and hopefully others in the space – also taking this issue seriously, but it only works if they are willing to communicate their findings.”

Kalshi has reported the matter to the US Commodity Futures Trading Commission.