Polymarket hits record $529 million volume on U.S.-Iran war bets

Polymarket reached a record $529 million in trading volume on a single geopolitical contract after the U.S. and Israel launched strikes on Iran on February 28, 2026. This volume makes the 'US strikes Iran' market the fourth-largest in the platform's history, trailing only major 2024 U.S. presidential election contracts. The speed of the market response was immediate. Within 24 hours of the strikes, the platform became a primary venue for pricing ceasefire timelines, regime stability, and the likelihood of ground troop involvement.

The market

The primary contract, 'US strikes Iran by...?', launched on December 22 and has since amassed $529 million in total volume. This exceeds all other markets in the World and Geopolitics categories. Trading on the specific date of February 28 alone accounted for $89.6 million.

| Market Contract | Volume | Resolution/Odds | | :--| :--| :--| | US strikes Iran by...? | $529,000,000 | Resolved Yes | | Khamenei out by March 31 | $45,000,000 | Resolved Yes | | Feb 28 strike date | $89,600,000 | Resolved Yes | | Regime fall by June 30 | N/A | 54% probability | | Ceasefire by March 2 | N/A | 4% probability | | Ceasefire by April 30 | N/A | 78% probability |

The 'Khamenei out as Supreme Leader by March 31' market resolved to 100% on Sunday after Iranian state TV confirmed the leader's death. This specific contract saw $45 million in volume. One trader, using the account 'Curseaaaaaaa', realized a profit of $757,000 on a 'yes' bet. Four other participants recorded six-figure gains on the same outcome.

Key details

Polymarket operates as a decentralized prediction market where users trade shares in the outcome of future events. While the platform is accessible globally via its website, it remains restricted for U.S.-based users following a 2022 settlement with the Commodity Futures Trading Commission (CFTC). The company paid a $1.4 million fine at that time for operating an unregistered facility.

Recent activity has invited scrutiny. Onchain analysts identified six specific wallets that earned approximately $1.2 million by betting on the February 28 strike date shortly before the event occurred. This has prompted discussions regarding potential insider trading within geopolitical prediction markets.

Market context

The resolution rules for the primary strike market were specific. To trigger a 'yes' resolution, the event required drone, missile, or air strikes on Iranian soil by U.S. forces. The rules explicitly excluded cyberattacks, interceptions, or ground operations from the strike definition.

While prediction markets reacted to the military action, broader financial markets showed a relief bounce. Bitcoin rose to $68,000 as bettors began pricing a short-term resolution rather than a multi-year conflict. The market currently prices the odds of a ceasefire by April 30 at 78%, suggesting that capital expects the intensity of the conflict to peak early and subside within 60 days.

Prediction market angle

The market is currently focused on the power vacuum in Tehran. The 'Next Supreme Leader' market shows a 30% chance that the position will be abolished. This indicates that one-third of the smart money believes the current theocratic structure will not survive the transition. This is a significant shift from January, when the probability of the regime falling by June sat in the low-20s. It has now climbed to 54%.

Bettors are also pricing the risk of U.S. ground forces entering Iran by March 7. While this remains a lower-probability event compared to air strikes, the pricing fluctuates in real-time based on troop movements and official statements. This creates a high-speed feedback loop that often moves faster than traditional news desks.

What this means

Polymarket has moved from a niche crypto product to a primary source of geopolitical intelligence. The $529 million volume proves there is deep liquidity for hedging against or speculating on international conflict. However, the concentration of profits among a few wallets on the February 28 strike date highlights the risks of information asymmetry in these markets.

For traders, the data shows a clear trend: the market expects a regime change or a massive structural shift in Iran by mid-year. The sharp spike in the 'regime fall' market suggests that the death of Khamenei is viewed as a terminal event for the current administration. We are no longer watching a regional skirmish; we are watching the market price the end of a political era.

Check FlowFrame for real-time data on these geopolitical shifts and the latest prediction market movements.