Polymarket Market Integrity Rules draw scrutiny

Polymarket’s new market-integrity rules are getting fresh attention after social posts on May 18 highlighted the platform’s ban on insider trading and its claim that it monitors trading activity in real time. The company’s policy says Polymarket “partners with world-class surveillance and technology specialists” and notes that trades are publicly visible because they are executed on the Polygon blockchain. The renewed focus comes as prediction markets face broader questions about bets tied to military operations, corporate events and other sensitive outcomes. It also follows a federal criminal case that prosecutors have described as a prediction-market insider-trading prosecution. ### What did Polymarket actually publish? Polymarket says on its market-integrity page that insider trading and trading by people who can influence an outcome are “strictly prohibited.” The policy bars trading on stolen confidential information, illegal tips, and contracts whose outcomes a trader can affect, according to the company’s website. The company says it monitors trading activity in real time and relies on outside surveillance and technology specialists. Because trades are executed on Polygon, Polymarket says, trading activity is publicly viewable. ### Why are people connecting this to insider trading now? Social posts this week pointed to the rules as evidence that Polymarket is responding to mounting allegations around suspiciously timed bets in sensitive markets. (polymarket.com) Yahoo Finance and Decrypt reported on May 19 that interlinked Polymarket accounts made millions on contracts tied to U.S. military actions in Iran, citing analysts who said the accounts won 98% of the time. Wired reported on May 15 that CFTC Chairman Michael Selig said the agency uses AI to scour Polymarket and other prediction markets for illegal activity. The outlet framed that effort as part of a wider push by authorities to detect misconduct on prediction-market platforms. ### Who is Gannon Ken Van Dyke, and why does his case matter here? The U.S. Justice Department said on April 23 that it unsealed an indictment charging Gannon Ken Van Dyke, a U.S. (finance.yahoo.com) Army soldier, with unlawful use of confidential government information for personal gain, theft of nonpublic government information, commodities fraud, wire fraud and an unlawful monetary transaction. Prosecutors said Van Dyke allegedly made more than $400,000 trading on Polymarket using classified information about a U.S. military operation to capture Nicolás Maduro in Venezuela. (wired.com) The Justice Department said Van Dyke participated in planning and executing the operation and then used his access to classified information to place wagers on its timing and outcome. Acting Attorney General Todd Blanche said at the time that federal laws protecting national security information “fully apply” to prediction markets. (justice.gov) ### Why are lawyers and companies focused on sensitive contracts? Bloomberg Law reported on May 18 that companies are weighing insider-trading, reputational and legal risks as prediction markets expand into bets on corporate performance, executive departures and other business events. The report said Polymarket and Kalshi had recently announced new measures intended to curb insider trading. (justice.gov) Lillian Tsu of Cleary Gottlieb Steen & Hamilton told Bloomberg Law that companies are worried about reputational harm and protecting confidential information. Scott Kimpel of Hunton Andrews Kurth said illegal insider trading casts companies in a negative light regardless of the platform involved, according to the report. ### What happens next? (news.bloomberglaw.com) Polymarket’s market-integrity page is now public and sets out the conduct the company says it will prohibit, including trading on confidential information and illegal tips. Federal scrutiny is also continuing: the Van Dyke case remains in court in the Southern District of New York, and recent reporting from Bloomberg, Wired and others shows regulators, lawyers and traders are still focused on military and other high-sensitivity contracts. (news.bloomberglaw.com) (polymarket.com)