Betting On War
Kevin Abbaszadeh
Technology Editor
When U.S. strikes hit Houthi-linked infrastructure in Yemen earlier this year and Iranian naval vessels began shadowing commercial tankers near the Strait of Hormuz, news outlets scrambled to keep up. Traders on Kalshi and Polymarket had already moved.
Prediction markets have quietly become one of the more active gauges of where the U.S.-Iran conflict is heading. Kalshi, which won its landmark CFTC legal battle in 2024 and now operates as a fully regulated U.S. exchange, and Polymarket, the crypto-native platform with a largely international user base, both carry active contracts tied to escalation scenarios. Ground invasion timelines, carrier group deployments, Hormuz closure probabilities — all of it is being priced in real time by people putting actual money on the line.
The Strait of Hormuz angle has drawn particular attention. Roughly 20 percent of the world’s oil passes through that narrow corridor, and contracts tied to a full Iranian blockade have seen volume spikes every time Tehran makes noise about mining the waterway or restricting passage. When oil futures jump on a Monday morning, it is increasingly common to see Polymarket’s Hormuz closure contracts move in the same breath, sometimes minutes ahead of analyst commentary.
What separates these platforms from punditry is accountability. A trader who buys a contract at 28 cents on a ground deployment scenario is not just speculating… they are staking capital on being right. That financial pressure is precisely why prediction market probabilities have, in several documented cases during this conflict, shifted before major wire services confirmed the underlying news. Someone in the market knew something, priced it, and the contract moved.
Kalshi’s regulated structure has attracted a more institutional crowd, with some smaller hedge funds and macro traders reportedly using its contracts as a real-time hedge against Middle East exposure in their energy and defense positions. Polymarket, less constrained and more liquid on certain contracts, tend to reflect a broader global t
rader base that includes people with regional proximity to the conflict.
The criticism has not gone away. Ethicists and some lawmakers have renewed calls to restrict war-outcome contracts, arguing that financializing conflict creates incentives nobody should be comfortable with. Kalshi has continued framing its product as an information market, not a casino, pointing to research showing crowd-based probability estimates consistently outperform expert panels on verifiable events.
Right now, with carrier groups in the region, Hormuz transit tensions unresolved, and congressional debate over an authorization for use of military force still live, the contracts are not settling anytime soon. The market is watching and so is everyone else.
Contact Kevin at kevin.abbaszadeh@student.shu.edu