Kalshi Suspended a California Politician and a YouTuber for Insider Trading

Leading prediction market Kalshi has revealed details of two recent insider trading cases it flagged to authorities, giving a rare look at how the platform enforces its policies.

A former candidate in the 2026 race for governor of California and a popular YouTuber have been kicked off Kalshi’s platform for alleged violations related to insider trading, the popular prediction market revealed Wednesday.

In a blog post detailing the cases, Kalshi’s head of enforcement Robert DeNault noted that the company’s surveillance system had flagged suspicious behavior in both instances.

In the case of the political candidate, Kalshi cited a video posted online “that appeared to show him trading on his own candidacy.” Kalshi froze the candidate’s accounts and reported the activity to the Commodity Futures Trading Commission, the government agency that oversees prediction markets. It instituted a five-year ban and is fining the account a penalty 10 ...