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House Republicans Open Investigation Into Kalshi, Polymarket Over Insider Trading
Key takeaways
- The investigation will focus on insider trading by users on both platforms, and wagers that leverage non-public information, Committee Chair James Comer (R-KY) said.
- “This growing pattern of insider trading activity on prediction market platforms indicates that Congressional action may be necessary,” the congressman said.
- Comer sent letters to Kalshi CEO Tarek Mansour and Polymarket CEO Shayne Coplan on Friday, requesting a slew of documents related to both companies’ internal operations.
House Republicans Open Investigation Into Kalshi, Polymarket Over Insider Trading Sander Lutz Fri, May 22, 2026 at 9:37 PM GMT+7 2 min read POLA.PVT The leader of the powerful House Oversight Committee announced Friday he has launched an investigation into prediction market juggernauts Kalshi and Polymarket.
The investigation will focus on insider trading by users on both platforms, and wagers that leverage non-public information, Committee Chair James Comer (R-KY) said.
“This growing pattern of insider trading activity on prediction market platforms indicates that Congressional action may be necessary,” the congressman said.
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