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The move came amid rising concern about insider trading on prediction market platforms such as Kalshi and Polymarket, and about event contracts that can involve death or violence.
On April 22, Kalshi said it had suspended and fined one U.S. Senate candidate and two candidates for the House of Representatives for political insider trading on their own campaigns.
On April 23, a U.S. Army Special Forces soldier, Master Sgt. Gannon Ken Van Dyke, was arrested on an indictment accusing him of classified information to make bets on Polymarket related to the American military mission that captured Venezuelan leader Nicolás Maduro.
Earlier on Thursday, a group of Democratic members of Congress called on the Commodity Futures Trading Commission to issue a rule “that prevents insider trading and corruption in the market and prohibits event contracts on the outcome of elections, war and military actions in the U.S. or abroad, sports, and government actions without a valid economic hedging interest.”
Disclosure: CNBC and Kalshi have a commercial relationship that includes a CNBC minority investment.
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