Lawsuit Alleges Deceptive Rules on Khamenei Market
Prediction market Kalshi is facing a class-action lawsuit alleging that it unfairly voided trades related to its “Ali Khamenei out as Supreme Leader” market. The legal challenge stems from Kalshi’s decision to cancel all positions after the leader's death was confirmed, preventing the market from resolving to “yes.” Plaintiffs contend that the platform's “death carveout” policy—which nullifies markets where the outcome is a death—was not clearly disclosed in the user-facing rules summary. They characterize the practice as “predatory” and “unfair,” particularly given the context.
The lawsuit argues that for an 85-year-old autocratic leader, death was a highly probable mechanism for leaving office. The filing highlights that “Defendants, themselves, later acknowledged that their prior disclosures were ‘grammatically ambiguous,’” suggesting even Kalshi recognized the lack of clarity. Plaintiffs also criticized the reimbursement process, which was based on the market's “last traded price,” as lacking transparency regarding its methodology and timing.
Kalshi Defends Policy and Reimburses Users
In response to the allegations, Kalshi co-founder Tarek Mansour defended the platform's actions, stating they were consistent with established policies. “We don’t list markets directly tied to death. When there are markets where potential outcomes involve death, we design the rules to prevent people from profiting from death,” Mansour explained. He asserted that the policy was available in the market rules from the beginning.
Mansour emphasized that Kalshi did not profit from the situation and took steps to protect users financially. “Kalshi made no money here and even reimbursed all losses out of pocket. Not a single user walked away losing money from this market,” he stated. The incident comes as prediction markets are experiencing a surge in popularity, with trading volumes reaching record highs in 2026. This legal battle places the transparency and rule-making of these emerging platforms under increased scrutiny from both users and potentially regulators.
