Kalshi Faces Class Action Lawsuit Over $54 Million Payouts in Khamenei Prediction Market

Prediction market platform Kalshi is embroiled in a class action lawsuit involving a disputed payout of approximately $54 million. The plaintiffs allege that after Iranian Supreme Leader Ali Khamenei died during a weekend military operation, the platform unilaterally and retroactively introduced a rule of “non-settlement based on death,” refusing to honor previously valid betting contracts.

According to the lawsuit, Khamenei, aged 85, died in a joint US-Israeli military operation, triggering significant political upheaval in Iran. Previously, the market explicitly allowed users to bet on his “departure” – including death, resignation, or removal from office. With ongoing escalation of regional military tensions, many analysts believed death was the most likely path to his departure, leading many users to trade accordingly.

Kalshi responded that its platform's terms, from the outset of the prediction market, explicitly excluded settlement based on “death events,” and that these rules had never changed. The company stated that to avoid disputes, it had proactively refunded millions of dollars in transaction fees and some losses, but did not admit any breach of contract. The plaintiffs argue that emphasizing the rule only after the outcome constitutes fraudulent behavior and undermines the credibility of prediction markets. The incident has once again raised widespread public concern about the transparency and consistency of rule enforcement on prediction platforms. In recent years, prediction markets have excelled in forecasting political and economic events, particularly in the 2024 US presidential election, where their probability models surpassed the accuracy of traditional polls. These platforms allow users to trade “yes/no” contracts covering a wide range of areas, including political changes, economic indicators, and sports events, but regulatory boundaries remain contentious.