$529 Million Traded On Polymarket Over Bets Tied To U.S. Strike On Iran

Prediction market platform Polymarket handled $529 million in trading volume on contracts linked to the timing of a U.S. and Israeli military attack on Iran, according to reporting cited from Bloomberg.

Analytics firm Bubblemaps SA found that six newly created Polymarket accounts collectively made about $1 million in profit by correctly wagering that the United States would strike Iran by February 28. That pattern of activity is raising fresh questions about whether some users may be trading on privileged or non-public information in highly sensitive geopolitical markets.

Bubblemaps CEO Nicolas Vaiman said the combination of information flows “involving war or conflict” and Polymarket’s anonymous trading environment “can create incentives for informed participants to act early.” While the firm’s analysis does not prove wrongdoing, the clustering of large, accurate bets in new accounts stands out against broader speculative activity around the same event.

The trading spike around the Iran contracts underscores how blockchain-based prediction markets are increasingly intersecting with real-world conflict and national security decisions. These platforms allow users to buy and sell shares in outcomes linked to politics, global events and other uncertainties, with prices reflecting the crowd’s aggregated view of the likelihood of each outcome.

In January, another analytics firm, Polysights, flagged a noticeable rise in prediction market activity around the possibility that Iran’s Supreme Leader Ali Khamenei would no longer hold that position by the end of March. Khamenei is now deceased, and the earlier trading buildup around his status added to concerns that markets tied to political leadership transitions or conflict flashpoints can quickly edge into morally and legally fraught territory.

Critics argue that contracts directly linked to violent events or the fate of specific individuals can create the appearance of, or a real, financial incentive to see those outcomes occur. They also worry that these markets can become a venue for people with access to sensitive information whether from government, military, or corporate channels to quietly profit ahead of public disclosures.

Supporters of prediction markets counter that they can improve information aggregation and forecasting, especially around complex geopolitical risks that are poorly captured in traditional polling or analyst research. But even among proponents, there is growing recognition that not all markets are equal, and that some topics warrant tighter constraints or clearer rules.

Platforms respond to backlash over death-linked markets

While the Polymarket trades have drawn attention for the sheer volume and the timing of profitable bets, other prediction platforms are also being pushed to explain how they handle markets that brush up against life-and-death scenarios.

Kalshi CEO Tarek Mansour, responding to concerns that certain contracts could effectively put a price on assassination or death, said the platform avoids listing markets that are explicitly and directly tied to a person’s death. “We don’t list markets directly tied to death,” he said. In cases where possible outcomes in a market could involve death, Mansour added that Kalshi designs the rules “to prevent people from profiting from death.”

He also said that Kalshi would reimburse all fees from bets of this kind, an attempt to further distance the platform from the perception that it allows traders to benefit financially from mortality-related events.

The contrast between Kalshi’s stated policy and the markets now under scrutiny on Polymarket highlights the broader regulatory and ethical gap facing the sector. Crypto-native platforms that emphasize anonymity and permissionless access can be particularly challenging to monitor, even as they attract significant capital to contracts focused on war, regime stability and other sensitive geopolitical outcomes.

As more money flows into these products Polymarket’s $529 million volume on Iran bombing-related contracts being a stark example, pressure is likely to mount from regulators, policymakers and the public for clearer standards on what should and should not be tradable, and how potential insider trading in such markets should be handled.