Polymarket shut down a nuclear detonation prediction market after $850K in bets due to ethics concerns and regulatory scrutiny.

Polymarket removed a prediction market betting on nuclear detonations by 2027 after it attracted nearly $850,000 in trading volume, citing public backlash and ethical concerns. The market, which allowed wagers on any nuclear explosion, was taken down within hours of launch amid heightened global tensions and scrutiny over potential insider trading. The platform has previously allowed similar contracts but faces growing regulatory and public pressure to limit bets on catastrophic events.