Kalshi, a U.S.-regulated prediction market platform, moved this weekend to reimburse users and clarify its rules after widespread criticism over a contract tied to the fate of Iran’s supreme leader and the impact of his death on the markets.
Kalshi’s chief executive, Tarek Mansour, said in a post on the social media platform X that all fees collected on the “Ali Khamenei out as Supreme Leader?” market would be refunded to participants. Positions opened before confirmed reports of Ayatollah Ali Khamenei’s death will be settled at the last traded price before that moment, while users who entered positions after the confirmation will receive full compensation, according to Mansour’s explanation.
He emphasized that Kalshi does not list markets that settle directly on death, and that the refund and settlement policy were designed to prevent users from profiting from a person’s death.
The market attracted significant attention over the weekend as global tensions spiked following U.S. and Israeli missile strikes on Iranian targets and state media reports confirming Khamenei’s death. Thousands of users had placed wagers tied to whether Khamenei would leave office, and trading volume surged in the hours before the news broke.
Mansour’s posts reiterated Kalshi’s policy that markets must be constructed in ways that do not hinge on an individual’s death. Under the exchange’s rules, the question of someone “leaving office” can be listed, but the outcome of death — a terminal event — triggers special settlement provisions to ensure participants do not benefit financially from that outcome.
Industry observers and users on social platforms raised questions after the policy was applied, with some saying the compensation received did not reflect what they believe would have been earned had the contract been resolved on the market’s ultimate outcome. Regulatory scholars and market surveillance analysts have highlighted how ambiguous wording in contracts tied to geopolitical events can lead to confusion, especially when real-world developments move rapidly. Critics also pointed to concerns over possible insider information affecting betting patterns in such markets.
On rival platform Polymarket, traders similarly rushed into contracts tied to the outbreak of hostilities between Israel and Iran, with some users reporting substantial gains as markets rapidly repriced in the hours before and immediately after missile strikes were confirmed.
Blockchain data shared by market participants showed six- and seven-figure positions changing hands as probabilities jumped from the low double digits to near certainty. While some traders framed the gains as evidence that prediction markets quickly incorporate new information, others argued the episode highlighted uncomfortable optics: financial windfalls tied directly to the escalation of armed conflict.
Kalshi, which is regulated by the Commodity Futures Trading Commission, has positioned itself as a platform for event-based contracts with real-world implications. But the recent backlash underscores ongoing ethical and regulatory debates about how far such markets should go in linking financial outcomes to sensitive political events or personal fates.
