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CFTC Cracks Down on Insider Trading in Prediction Markets
Enforcement chief warns traders that insider trading will not be tolerated as political pressure mounts on fast-growing platforms
Apr. 1, 2026 at 10:34am
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The Commodity Futures Trading Commission is stepping up oversight of prediction markets, warning traders that insider trading will not be tolerated. CFTC enforcement chief David Miller said the agency will hire more staff to investigate cases and negotiate settlements, emphasizing that the CFTC has the resources to enforce rules despite recent departures in its Chicago office. Prominent prediction market platforms like Kalshi and Polymarket have faced scrutiny after incidents involving insider trading, prompting political pressure for stronger regulations.
Why it matters
Prediction markets have grown rapidly in recent years, with traders making high-stakes bets on everything from elections to geopolitical events. However, the lack of clear regulations has led to concerns about insider trading and market manipulation, drawing the attention of regulators and lawmakers who want to ensure fairness and integrity in these fast-growing platforms.
The details
In a speech at New York University's School of Law, CFTC enforcement chief David Miller said that a 'myth has spread' that insider trading is permissible or even encouraged in prediction markets. He vowed that the CFTC will crack down on such practices, hiring more staff to investigate cases and negotiate settlements. This comes after incidents at platforms like Kalshi and Polymarket, where a California politician wagered on his own election and a content editor traded on confidential information. Polymarket has since announced stricter policies against using nonpublic information, while Kalshi has banned politicians and athletes from betting in their own markets.
- On April 1, 2026, CFTC enforcement chief David Miller spoke at New York University's School of Law.
- In recent months, prediction market platforms like Kalshi and Polymarket have faced scrutiny over insider trading incidents.
The players
David Miller
The enforcement chief at the Commodity Futures Trading Commission (CFTC), who vowed to crack down on insider trading in prediction markets.
Kalshi
A prediction market platform that has faced scrutiny over insider trading incidents, including a California politician wagering on his own election.
Polymarket
A prediction market platform that has faced scrutiny over insider trading incidents, including a content editor trading on confidential information. The platform has since announced stricter policies against using nonpublic information.
Rep. Adam Schiff
A U.S. Representative who said the prediction markets industry could not be left to self-regulate and called for strong rules to prevent elected officials from using insider information to profit.
Sen. Elissa Slotkin
A U.S. Senator who is working with Rep. Adam Schiff on a bipartisan bill aimed at cracking down on insider trading abuses in prediction markets.
What they’re saying
“A myth has spread that insider trading is permissible, or even encouraged, in the prediction markets.”
— David Miller, CFTC Enforcement Chief
“Prominent individuals in finance, media, and particularly on social media, have contended that insider trading law does not apply to these markets. These comments all suggest that insider trading is an important and acceptable part of the prediction market ecosystem. Not so.”
— David Miller, CFTC Enforcement Chief
“The prediction markets industry could not be left to self-regulate and called for strong rules to prevent elected officials from using insider information to profit.”
— Rep. Adam Schiff
What’s next
Rep. Adam Schiff and Sen. Elissa Slotkin are working on a bipartisan bill aimed at cracking down on insider trading abuses in prediction markets. Additionally, Manhattan prosecutors have met with Polymarket to investigate whether high-stakes bets, including trades tied to Nicolás Maduro's capture and Iran war events, violated insider trading and federal laws.
The takeaway
The CFTC's crackdown on insider trading in prediction markets highlights the need for stronger regulations and oversight in this rapidly growing industry. As these platforms become more popular and high-stakes, ensuring fairness and integrity is crucial to maintaining public trust and preventing market manipulation.
