Rep. James Comer expands House investigation into prediction market insider trading
Comer expanded the committee’s investigation by seeking records from three prediction-market platforms.

SOURCE CHECK
TAP FOR WHYCNBC is an established national news organization, and the article names its author and attributes statements and reported findings to identifiable sources. It also discloses a commercial relationship with Kalshi, while noting that the three companies contacted did not immediately respond.
- Source type — Established national news outlet with a substantial reporting operation.
- Author attribution — The article identifies its reporter.
- Transparency — The article discloses CNBC’s commercial relationship with Kalshi.
- Editorial standards — The report attributes claims to Comer, a committee spokesperson and named outside reporting; the text does not establish correction practices.
The report attributes key claims, provides details about the documents sought and places the expanded inquiry in context. It notes that the companies had not responded, so their perspectives are not available in the article.
HOW WE SCORE ↗The article includes Comer’s rationale and committee information, but the contacted platforms’ responses are absent. It does disclose CNBC’s commercial relationship with Kalshi.
- Counterarguments presented — The three newly contacted platforms had not immediately responded, leaving their perspectives unavailable.
- Source diversity — The report includes statements from Comer and a committee spokesperson, as well as references to outside reporting.
- Omitted context — The article discloses CNBC’s commercial relationship with Kalshi, but offers limited company-side context on the new requests.
The article describes the investigation and allegations in mostly neutral, attributed language. It does not use discernibly partisan framing.
- Language tone — Mostly descriptive wording, with allegations identified as such.
- Source selection — Uses statements from Comer and a committee spokesperson and reports that companies did not immediately comment.
- Framing — Frames the story around the expansion of a congressional investigation.
Rep. James Comer expanded a House investigation into insider trading on prediction markets, requesting records from three platforms about identity checks and efforts to detect suspicious trading. The inquiry broadens an investigation that already includes Kalshi and Polymarket.
Comer sent letters to Hyperliquid Labs, Crypto.com and Aristotle Exchange, which owns PredictIt, seeking information about their identity-verification procedures and how they detect and prevent insider trading. He said the House Oversight Committee is examining whether prediction platforms meet their legal obligations. The companies had not immediately responded to requests for comment.
The committee’s earlier investigations into Kalshi and Polymarket remain ongoing, and a committee spokesperson said it had received nearly 1,000 documents and five briefings from the companies. The article also describes allegations involving suspicious prediction-market trades, including former Rep. George Santos’s reported Kalshi bets and a trade on Hyperliquid cited in Comer’s letter.
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SWIPE →House Oversight Committee chair expanding an investigation into prediction-market insider trading
Former representative discussed in connection with alleged prediction-market betting
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