Financial Regulation and Prediction Markets

Prediction‑market platform Polymarket announced Monday that it has tightened its rules to explicitly bar trades based on 'stolen confidential information' or other illegal tips, and to prohibit users from betting on markets where they hold positions of authority that could influence the outcome—for example, a CEO wagering on how often they will say a word on an upcoming earnings call. The New York‑based company is facing mounting scrutiny after customers placed suspiciously well‑timed bets on the capture of former Venezuelan President Nicolás Maduro and on the timing of U.S. military strikes in the Iran war, including one trader who reportedly made hundreds of thousands of dollars on Iran‑strike markets, prompting Sen. Ruben Gallego to denounce it online as 'insider trading in broad daylight.' Polymarket says it now uses a multilayered monitoring system and outside surveillance vendors to detect violations and may refer suspect activity to law enforcement or take other disciplinary steps, framing the rule overhaul as an effort to 'make expectations abundantly clear' as prediction markets grow. The moves come as the Commodity Futures Trading Commission earlier this month issued guidance and opened a rulemaking process outlining what event‑contract exchanges should do to prevent insider trading and price manipulation, with legal experts saying platforms are trying to get ahead of potential congressional crackdowns. The controversy underscores how thin the line has become between legalized event betting and trading on sensitive or even classified national‑security decisions, raising new questions about whether prediction markets can be policed without turning into another vector for profiteering off inside government information.