CFTC files enforcement charges against Kalshi and Polymarket

The Commodity Futures Trading Commission’s latest actions involving Kalshi and Polymarket are narrower than some May 21 social posts suggested. The agency did not announce a new, single enforcement case against both platforms that day. Instead, the recent record shows two different tracks: a first-of-its-kind insider-trading case tied to Polymarket on April 23, and earlier 2026 enforcement guidance built around misconduct in Kalshi-listed event contracts. April 2026 also brought a separate fight over who controls prediction markets. The CFTC has sued states including Wisconsin and Minnesota, arguing Congress gave it “exclusive jurisdiction” over federally regulated event contracts and that states cannot shut those markets down through gambling laws. ### So what did the CFTC actually do with respect to Polymarket? (cftc.gov) On April 23, the CFTC said it filed a complaint in federal court in Manhattan against Gannon Ken Van Dyke, an active-duty U.S. Army service member, alleging insider trading on Polymarket.com. The agency said Van Dyke used classified, nonpublic information about a U.S. operation to capture former Venezuelan President Nicolás Maduro and his wife, Cilia Flores, to trade a Maduro-related contract. (cftc.gov) The CFTC said Van Dyke bought more than 436,000 “Yes” shares between December 30, 2025, and January 2, 2026, and generated more than $404,000 in profits. Chairman Michael S. Selig said the case was the first time the agency had charged insider trading involving event contracts and the first time it had used the so-called “Eddie Murphy Rule” based on misuse of government information. (cftc.gov) The Justice Department announced a parallel criminal case the same day. Acting Attorney General Todd Blanche said federal laws protecting national security information “fully apply,” while U.S. Attorney Jay Clayton said the alleged conduct was “clear insider trading and is illegal under federal law.” (cftc.gov) ### Was Polymarket itself charged by the CFTC this time? The April 23 case targeted an individual trader, not Polymarket itself. That distinction matters because Polymarket already had a prior direct CFTC case: in a January 2022 order, the agency said Blockratize, Inc., doing business as Polymarket.com, operated an unregistered facility for event-based binary options contracts and imposed remedial sanctions. (justice.gov) That older order remains part of the regulatory backdrop for Polymarket. The newer case shows the agency applying fraud and insider-trading theories to conduct on a prediction-market platform rather than reopening the same registration case. ### And what was the Kalshi action? On February 25, the CFTC’s Division of Enforcement issued an advisory after two public enforcement matters involving misuse of nonpublic information and fraud in Kalshi-listed event contracts. (cftc.gov) The release said Kalshi’s internal enforcement program had already handled the matters, including penalties and suspensions, but the commission emphasized that it retained full authority to police illegal trading on any designated contract market. The CFTC release described one case involving a political candidate trading on his own candidacy and another involving a YouTube editor who likely had advance knowledge of unpublished content. Kalshi imposed financial penalties and access suspensions in both matters, according to the agency. ### Why are people linking these cases to a broader court fight? (cftc.gov) April and May court filings show the CFTC trying to protect federal control over prediction markets as states move against Kalshi, Polymarket and other platforms. In its Wisconsin case, the agency said states were trying to regulate markets that Congress placed under federal supervision. In its Minnesota complaint, the CFTC called the new state law “the first outright ban on ‘prediction markets’ in the United States.” (cftc.gov) That means the current dispute is running on two levels at once. One level is classic market enforcement — fraud, misuse of confidential information and insider trading. The other is a jurisdiction fight over whether event contracts are federally regulated derivatives, state-law gambling, or both, as reflected in the CFTC’s own lawsuits against states. That characterization is an inference from the agency’s filings and releases. (cftc.gov) ### What comes next? The next concrete steps are in court dockets and in the CFTC’s broader prediction-market rule process. The Polymarket-related insider-trading case is pending in the U.S. District Court for the Southern District of New York, while the CFTC’s preemption suits against states including Minnesota and Wisconsin are moving through federal court. Kalshi, meanwhile, has submitted comments to the CFTC’s March 12, 2026 advance notice of proposed rulemaking on prediction markets. (cftc.gov)