Traders Sue Kalshi Over $54M Bets on Khamenei Leaving, Alleging Platform Withholds Payouts

Traders have filed a proposed class action accusing Kalshi, a real‑money prediction‑market platform, of withholding payouts after a market tied to whether Iran’s Supreme Leader Ali Khamenei would leave office was halted amid reports of strikes.

“Kalshi faces class action over $54M bet on Iran leader’s departure Traders claim Kalshi failed to pay out bets on Ali Khamenei leaving office after death carveout surfaced following airstrike reports”

Crypto Briefing

Crypto Briefing reports that the market, which drew about $54 million in trading volume, was halted after reports of US and Israeli airstrikes on Iran and that plaintiffs say Kalshi did not clearly disclose a 'death carveout' until after the reports surfaced and erroneously allowed trading to continue on Feb. 28, encouraging additional 'yes' bets.

Crypto Briefing

The Washington Post documents specific winning bets and says that 'After news of Khamenei’s killing, the app marked the bets as winners and showed payouts of more than $63,000.'

Scripps News highlights timing concerns, reporting that most bets on prediction markets tied to recent air strikes were placed within a day of the strikes—some just hours beforehand—and that one account won more than $500,000, sparking concerns about possible insider trading.

The plaintiffs' complaint centers on contract interpretation and disclosure.

It argues Kalshi's terms were "clear, unambiguous, and binary" and that the platform failed to disclose a "death carveout" until after market-moving reports, which the plaintiffs say wrongly encouraged further "yes" wagering.

Scripps News

Crypto Briefing summarizes the legal claim, noting the complaint was filed in the U.S. District Court for the Central District of California by Adam Risch and Yonatan Gliksman (Novian & Novian LLP), says the contract language was 'clear, unambiguous, and binary', and demands damages, restitution, and court orders to improve disclosures.

The Washington Post described bets predicting that Iran's Ayatollah Ali Khamenei would be out as Supreme Leader by March or April 1 and recorded large payouts after the event.

Scripps News' reporting on timing underscores why the plaintiffs view the disclosures and market pause as legally and ethically problematic.

Sources offer inconsistent accounts of Kalshi's public responses.

“Democracy Dies in Darkness By Drew Harwell When he learned Saturday about the killing of Iran’s Ayatollah Ali Khamenei, the Israeli-American business executive in New York was excited to cash in”

The Washington Post

Crypto Briefing reports that Kalshi CEO Tarek Mansour initially said the platform does not offer markets tied directly to a person's death.

Crypto Briefing says Mansour later announced the company would reimburse traders for fees and net losses related to the market and would revise how death-related exceptions are disclosed.

The Washington Post records readers' strong backlash, criticizing the ethics of betting on life-and-death events and raising concerns about insider trading and political figures' involvement.

Scripps News places the episode in a wider debate about regulation and insider access, reporting that critics asked what prevents military or other government personnel from wagering on operations they know are imminent.

Those concerns help explain calls for company remediation and policy change.

Commentators and legislators have flagged systemic risk and democratic damage from potentially 'perfectly timed bets'.

Scripps News reports that Economist Alex Tabarrok countered that insider bets can make markets more accurate and said any restrictions would be a government responsibility.

Scripps News

Scripps News reports that Senators Jeff Merkley and Amy Klobuchar introduced the End Prediction Market Corruption Act on Thursday to bar high-level government officials from participating in prediction markets and called 'perfectly timed bets' corrosive to democracy.

The Washington Post’s coverage of high-value wins and the public backlash reinforces why policymakers and market operators are under pressure to clarify rules.

Crypto Briefing’s account of halted trading and disclosure disputes frames the move as part of broader regulatory and legal scrutiny.

The lawsuit seeks financial remedies and operational changes.

“Senators are calling for new legislation after millions of dollars in bets were placed on prediction market sites tied to U”

Scripps News

Crypto Briefing reiterates that plaintiffs "demand damages, restitution, and court orders to improve disclosures," and Kalshi has pledged reimbursements and disclosure revisions.

Crypto Briefing

Media reports show intense public criticism of the ethics of such markets.

The Washington Post’s example of individual winners and community outrage — an anonymous trader’s $3,460 wagers returning "more than $63,000" — and Scripps News’ accounting of very large, near‑strike bets underscore why traders, lawyers, regulators, and the public are now contesting how prediction markets handle death‑adjacent contingencies and sudden geopolitical shocks.