Kalshi Voids Bets on Khamenei's Death, Claims It Doesn't Profit from Death Markets

Prediction market platform Kalshi has voided certain bets related to Iran's Supreme Leader Ali Khamenei being removed from power, with CEO Tarek Mansour claiming the company doesn't "list markets directly tied to death." The decision has sparked a backlash from users who feel the rules were unclear and the resolution was unfair.

What Happened

Kalshi had been running a market titled "Ali Khamenei out as Supreme Leader?" — allowing users to bet on whether Khamenei would leave power. When Khamenei died, the obvious resolution would have been to pay out "Yes" bettors in full. Instead, Kalshi announced it would pay out positions at the last trading price before his death, rather than the full contract value.

The company is also refunding fees and reimbursing anyone who purchased shares after Khamenei's death.

The User Backlash

Users are furious, and their complaints fall into two categories:

• Unclear rules: Many bettors argue that Kalshi's policies around death-related markets were never clearly communicated before they placed their bets
• Having it both ways: Critics accuse Kalshi of allowing users to bet on Khamenei being "out of power" — which was never realistically going to happen without his death — while refusing to honor full payouts when the most likely outcome occurred

Some users pointed out that the market could have been worded more narrowly (e.g., "Will Khamenei resign?") if Kalshi genuinely wanted to avoid death-adjacent betting.

Kalshi vs. Polymarket

The contrast with competitor Polymarket is notable. Polymarket ran a similar market on Khamenei and does not appear to have altered its payouts. Polymarket also allowed betting on whether the US would launch military strikes on Iran — markets Kalshi chose not to offer.

This divergence highlights the fundamental tension in the prediction market industry: where do you draw the ethical line when the events being bet on involve real human suffering?

The Regulatory Question

Mansour defended Kalshi's position by citing US regulations, arguing that "having a market directly settling on someone's death" isn't allowed under current rules. But critics note that this defense rings hollow when the market was structured in a way that death was the most probable resolution.

The Bottom Line

Kalshi built a market that was functionally a bet on someone's death, collected fees while it ran, then voided the payouts when death actually occurred — all while claiming it doesn't profit from death markets. The mental gymnastics are impressive. Prediction markets are pushing into increasingly uncomfortable territory, and Kalshi's handling of this situation shows the industry hasn't figured out where the ethical guardrails should be. When your platform's rules are so ambiguous that users feel scammed, you have a trust problem that no regulatory defense can fix.