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House Republicans investigate insider trading on prediction markets

May 23, 2026

Summary

House Oversight Committee Chairman James Comer launched an investigation into potential insider trading on prediction markets like Kalshi and Polymarket, despite companies reiterating plans to grow their businesses.

How coverage differs

  • Center: House probe targets prediction markets over potential insider trading concerns Center outlets, including CNBC and The Wall Street Journal, report factually on House Oversight Committee Chairman James Comer's launch of an investigation into potential insider trading on prediction markets. They detail the probe's focus on platforms like Kalshi and Polymarket, noting the companies' continued plans for business growth despite the congressional scrutiny.
  • Right: Scrutinizing financial dealings to expose potential conflicts and illegality Right-leaning outlets, exemplified by The Dispatch, frame the discussion of insider trading through the lens of ethical concerns surrounding public officials' financial dealings, specifically President Trump's stock transactions. They argue that while such transactions may not constitute illegal insider trading, they still raise significant ethical questions and represent a scandal.

Coverage by lane

Center

  • Oversight Chairman Comer launches congressional probe into insider trading on Kalshi, Polymarket
  • House Republicans Open Investigation Into Prediction-Market Insider Trading

Right

  • Trump’s Stock Transactions Probably Aren’t Insider Trading. They’re Still a Scandal.

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