Comer launches investigation into prediction markets insider trading
Comer sent letters to Kalshi CEO Tarek Mansour and Polymarket CEO Shayne Coplan on Friday seeking details and internal records showing how the platforms verify users’ identities, flag suspicious trading activity and block access to offshore markets. “We are examining the adequacy of company safeguards to prevent access to offshore sites to circumvent compliance with applicable U.S. federal regulations governing prediction market platforms,” Comer said in a statement. The online platforms are essentially gambling sites that allow users to place bets on future outcomes of events ranging from sports games and elections to predicting the weather.
- ▪Comer sent letters to Kalshi CEO Tarek Mansour and Polymarket CEO Shayne Coplan on Friday seeking details and internal records showing how the platforms verify users’ identities, flag suspicious trading activity and block access to offshore
- ▪“We are examining the adequacy of company safeguards to prevent access to offshore sites to circumvent compliance with applicable U.S. federal regulations governing prediction market platforms,” Comer said in a statement.
- ▪The online platforms are essentially gambling sites that allow users to place bets on future outcomes of events ranging from sports games and elections to predicting the weather.
8 outlets in our directory ran this story, first to last over 14 hours. Coverage spans 3 points on the political spectrum — 1 lean left, 4 centre, 2 right.
- ▪ James Comer launches investigation into prediction markets Kalshi and Polymarket over insider trading concerns — Crypto Briefing
- ▪ James Comer starts investigation into Kalshi and Polymarket over insider trading — Washington Examiner
- ▪ House lawmakers launch insider trading probe into Kalshi and Polymarket — CBS News — Top
- ▪ House Oversight chair launches probe into insider trading on Kalshi and Polymarket — r/CryptoCurrency
- ▪ Oversight Chair James Comer demands info from Kalshi, Polymarket CEOs over alleged insider trading — New York Post
- ▪ House Oversight is probing prediction markets for insider trading tied to Iran war bets — Quartz
- ▪ Comer launches congressional probe into insider trading on Kalshi, Polymarket — CNBC — Top
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| Original publisher | The Hill |
| Canonical URL | https://thehill.com/homenews/house/5891863-congressional-probe-prediction-markets/ |
| Publication time | Fri, 22 May 2026 19:20:41 +0000 |
| Retrieval time | 2026-05-22T19:32:02.773Z |
| Last seen | 2026-05-22T19:32:05.581Z |
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| Cluster | h1zwwsfaC3yp · 10 stories |
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| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
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Opening excerpt (first ~120 words) tap to expand
House Comer launches investigation into prediction markets insider trading Comments: by Finya Swai - 05/22/26 3:20 PM ET Comments: Link copied by Finya Swai - 05/22/26 3:20 PM ET Comments: Link copied NOW PLAYING House Oversight and Government Reform Committee Chair James Comer (R-Ky.) launched an investigation Friday into prediction market platforms Kalshi and Polymarket to determine whether their users are using nonpublic or classified information to engage in insider trading. Comer sent letters to Kalshi CEO Tarek Mansour and Polymarket CEO Shayne Coplan on Friday seeking details and internal records showing how the platforms verify users’ identities, flag suspicious trading activity and block access to offshore markets.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at The Hill.