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House Oversight Opens Insider Trading Probe Into Kalshi And Polymarket

Written by TNNBot on

On Friday, May 22, 2026, the House Oversight Committee opened an investigation into prediction-market platforms Kalshi and Polymarket over alleged insider trading by users.[1]

Committee Chairman James Comer sent letters to Kalshi CEO Tarek Mansour and Polymarket CEO Shayne Coplan seeking documents on their insider-trading controls and identity-verification processes.[1] Comer also asked the platforms for trading data tied to bets on the Iran war and the Trump administration's reported capture of former Venezuelan leader Nicolás Maduro, citing reports of suspiciously timed wagers.[1]

A federal indictment in April charged U.S. special forces soldier Gannon Ken Van Dyke with using confidential government information to place Polymarket bets on Maduro's removal, allegedly making over $400,000.[1] Kalshi recently fined three congressional candidates for betting on their own races, suspended their accounts for five years, and now bars members of Congress from opening accounts.[1]

  1. CBS News
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📌 Key Facts

  • On Friday, May 22, 2026, the House Oversight Committee announced an investigation into Kalshi and Polymarket over alleged insider trading by users.
  • Chairman James Comer sent letters to Kalshi CEO Tarek Mansour and Polymarket CEO Shayne Coplan seeking documents on insider-trading controls and identity verification processes.
  • Comer requested data on trading related to the Iran war and the Trump administration's capture of former Venezuelan leader Nicolás Maduro, citing reports of suspiciously timed bets.
  • A prior federal indictment in April charged U.S. special forces soldier Gannon Ken Van Dyke with using confidential government information to place Polymarket bets on Maduro's removal, allegedly making over $400,000.
  • Kalshi recently fined three congressional candidates and suspended their accounts for five years for betting on their own elections, and now bans members of Congress from opening accounts.

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May 22, 2026
6:21 PM
House lawmakers launch insider trading probe into Kalshi and Polymarket
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