US-Iran peace agreement stirs prediction markets, with Polymarket users betting over 300 million dollars on the outcome.

A proposed agreement aimed at ending hostile actions between the US and Iran on Monday brought relief to stock and bond traders, but also brought new challenges to the prediction market. As one of the world's largest event prediction trading platforms, the volume of trades on Polymarket regarding whether the US and Iran will sign a peace agreement and when they will sign it has exceeded 345 million US dollars. The two countries announced over the weekend that they had reached an agreement, leading some traders to believe they could now collect their winnings. However, because it is still unclear whether this statement meets the conditions set in the Polymarket contract, these bets remain in a state of limbo. A proposal on Sunday evening to determine the contract as "yes" meaning a peace agreement has indeed been reached was quickly questioned by UMA holders. UMA is a cryptocurrency used by Polymarket to resolve market disputes. Some who disagreed with the outcome argued that the contract terms were not met, partly because no documents had been signed by both parties and partly because there are doubts about whether the agreement reached by both parties represents a "permanent" end to the conflict. This is the latest and one of the largest controversies faced by Polymarket, highlighting the difficulties prediction markets face when making "yes or no" judgments on complex real-world events.