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Senators question Kalshi and Polymarket

Story timeline · 2 updates, 29 Oct to 2 Nov 2026

Senators Elizabeth Warren and John Curtis asked Kalshi and Polymarket how they prevent insider trading and manipulation in election betting ahead of the midterms. They wrote on 28 Oct asking how the firms stop improper influence on 2026 midterm contracts, after researchers found traders with inside political…

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  1. Warren and Curtis ask Kalshi and Polymarket about election betting safeguards

    US senators Elizabeth Warren, a Democrat, and John Curtis, a Republican, asked Kalshi and Polymarket how they prevent insider trading and market manipulation in election betting ahead of next week's midterms. The senators are sceptical the firms can adequately oversee such contracts.

    RegulationCoinNessAIBearish

  2. Warren and Curtis ask Kalshi and Polymarket how they guard election contracts

    Senators Elizabeth Warren and John Curtis wrote on 28 Oct to Kalshi's Tarek Mansour and Polymarket's Shayne Copeland, asking how they stop improper influence on 2026 midterm contracts. Researchers found traders with inside political information made $143m on Polymarket between 2024 and 2026.

    RegulationOdailyAIBearish

Every update is a short rewrite, by AI in our own words, of a flash from the outlet named on it, credited and linked. Updates are joined into one story by AI; our editors can change a story’s name or take an update out. Not investment advice.