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Kalshi CEO Tarek Mansour supports the 2026 Public Integrity Financial Prediction Market Act, which aims to prevent insider trading in price prediction markets. The bill would prohibit federal officials from betting on political outcomes. Kalshi already enforces insider trading rules similar to those of the NYSE and Nasdaq. In December 2025, Kalshi achieved a trading volume of $62.6 billion, while Polymarket reached $22.8 billion.

Odaily Planet News: Tarek Mansour, CEO of prediction market platform Kalshi, expressed support for the "2026 Public Integrity Financial Forecast Market Act" proposed by U.S. Representative Ritchie Torres. The bill aims to prohibit insider trading in prediction markets. Mansour noted that Kalshi has already implemented rules on its platform to ban insider trading.

According to the introduction, the bill will prohibit federal elected officials, politically appointed personnel, and executive branch employees from participating in prediction market transactions involving government policies, government actions, or political outcomes. The legislative background is related to recent market controversies: previously, on the decentralized prediction market Polymarket, an account bet on Venezuelan President Maduro being removed from office before the end of January and earned about $400,000 after the related event occurred, raising concerns about potential insider trading using government information.

Mansour emphasized in his statement that a distinction should be made between prediction market platforms regulated in the U.S. and unregulated foreign platforms. He noted that Kalshi, as a federally regulated platform, has implemented insider trading rules similar to those of the New York Stock Exchange and Nasdaq, prohibiting users with non-public information from participating in related market transactions. At the same time, he pointed out that the bill applies only to regulated platforms within the U.S., and the current debate mainly focuses on non-U.S., unregulated platforms.

Data shows that in December 2025, both Kalshi and Polymarket achieved record monthly trading volumes, with Kalshi reaching approximately $6.26 billion and Polymarket reaching about $2.28 billion. Since March 2025, Kalshi has consistently led in trading volume. (The Block)