The U.S. Commodity Futures Trading Commission has secretly approved at least three insider trading investigations involving Polymarket event contracts, Wired reported. The probes concern contracts tied to Biden pardons, the Iran war and Google-related events. CFTC Chair Michael Selig approved the Biden pardon investigation in May after a trader reportedly earned more than $300,000 on the market. That month, the agency also approved an investigation into Iran war contracts after a group of suspicious accounts reportedly generated $2.4 million with a win rate of about 98%. In July, the CFTC opened a probe into Google-related contracts over possible trading based on nonpublic information about Google’s 2025 search rankings. The U.S. Attorney’s Office for the Southern District of New York is conducting a parallel investigation. Polymarket said it refers relevant matters to law enforcement and cooperates with investigations. Two arrests linked to Polymarket have already been made, although it remains unclear whether the accounts are connected to previously investigated individuals.