New Delhi, June 26 -- $13.5 million in a single day of World Cup trading fees, a record for prediction market platform Kalshi. It was June 24. The Commodity Futures Trading Commission's comment period on its landmark prediction markets rulemaking had been open for twelve days.

The CFTC published its notice of proposed rulemaking on event contracts in the Federal Register on June 12, opening a 45-day window for public input that closes on July 27. The FIFA World Cup final is scheduled for July 19. The commission's 267-page proposal, developed over two years of deliberation and following a prior comment round that drew roughly 3,500 responses, would establish the first federal framework for determining which sports-event contracts predicti...