Prediction market platform Kalshi has formally introduced a new “Death Rule” following controversy surrounding a high-profile market tied to the fate of Iran’s Supreme Leader Ayatollah Ali Khamenei. The rule is intended to clarify how contracts should be resolved when a public figure connected to a market dies, after the earlier incident sparked backlash from traders and policymakers.
The update adds Rule 6.3(e) to Kalshi’s contract guidelines, establishing a standardized method for settling markets when death becomes a factor in an event contract.
The Khamenei Market Controversy
The policy change comes after a prediction market asking whether Ali Khamenei would be “out” as Iran’s Supreme Leader attracted roughly $54 million in trades. When reports confirmed Khamenei had been killed during military strikes, many traders believed their bets had won.
However, Kalshi refused to pay full winnings. The company said its platform does not allow markets directly tied to a person’s death, and instead settled the contract using the last trading price before the death was confirmed.
The decision angered some users who argued the wording of the market implied that any scenario removing Khamenei from power—including death—would trigger a payout. Critics accused the platform of unclear rules and retroactive interpretation.
Kalshi ultimately reimbursed about $2.2 million to traders affected by the dispute.
What the New “Death Rule” Does
Under the newly formalized policy, if a contract involves an individual and that person dies, the market will be resolved based on trading activity immediately before the death or when it became foreseeable, rather than allowing traders to profit directly from the death itself.
Kalshi says the rule aims to:
Prevent markets from becoming death-based speculation
Reduce confusion in politically sensitive event contracts
Maintain compliance with U.S. regulatory restrictions on betting tied to assassination or death
The platform emphasized that the rule reflects both ethical considerations and regulatory requirements under U.S. derivatives law.
