Wartime Overview: The Valuation of the Iran Crisis in Prediction Markets

Prediction Markets Signal Rising Risk of Strait of Hormuz Closure

Amid escalating tensions between the United States and Iran, prediction markets are increasingly reflecting the possibility that the Strait of Hormuz could be shut down. As of March 3, 2026, nearly half of Polymarket participants—48%—anticipate a closure by the end of 2026, with 43% expecting it to happen even sooner. On Kalshi, 37% of traders foresee a shutdown before 2027. The Strait remains a vital corridor for global energy, facilitating 20% of worldwide LNG and crude oil shipments.

Recent attacks, such as the incident involving a Palau-flagged oil tanker near the Strait, have intensified worries about the safety of maritime routes and regional stability. These events have heightened risk perceptions among investors and traders, fueling increased volatility in both energy and financial markets.

Countries heavily reliant on Middle Eastern oil, like South Korea—which sources over 70% of its oil imports from the region—are already preparing for possible supply interruptions. The South Korean government is actively seeking alternative suppliers and evaluating the broader economic and supply chain risks associated with a potential closure of the Strait.

Why Are Prediction Markets Zeroing In on a Possible Closure?

Prediction markets aggregate the collective outlook of traders, translating sentiment into measurable probabilities. The increasing odds of a closure reflect growing fears of military conflict between the U.S. and Iran. Experts caution that even brief disruptions could push oil prices above $100 per barrel.

The Strait of Hormuz serves as a crucial bottleneck for the global energy supply. A long-term shutdown could halt 15% of the world’s oil and 20% of LNG exports, resulting in severe price shocks. According to Alan Gelder of Wood Mackenzie, alternative shipping routes and adjustments by OPEC+ would not be sufficient to fully mitigate the impact.

Potential Market Consequences of a Closure

If the Strait were closed, the world could face a dramatic spike in energy prices and a so-called “certainty recession”—a downturn triggered by uncertainty and surging costs. This scenario would likely suppress consumer demand and drive inflation higher. The costs of shipping insurance and rerouting vessels would also climb, adding further strain to the global economy.

Investors are keeping a close eye on developments, given the potential ripple effects. The energy sector, especially oil and LNG producers, is most vulnerable. Broader financial markets could also experience turbulence if trade flows are significantly disrupted for an extended period.

Key Factors Analysts Are Monitoring

Market analysts are focused on how long any closure might last and how quickly major oil producers, including OPEC+, can coordinate their responses. While strategic petroleum reserves could offer short-term relief, their impact depends on the speed and scale of deployment.

Potential military or diplomatic interventions by the U.S. and its allies could influence both the likelihood and duration of a shutdown. Market participants are watching closely for any escalation or easing of tensions between the U.S. and Iran.

Countries like South Korea, which are highly dependent on energy imports, are evaluating the risks to their supply chains. These assessments will shape the scope of emergency measures and their influence on global energy markets.

What Do Prediction Markets Indicate for Investors?

For investors, prediction market data can serve as a valuable gauge of geopolitical risk. As of March 2026, the probability of a Strait of Hormuz closure is climbing, signaling the potential for increased volatility in energy and financial markets.

To manage these risks, investors may consider diversifying their energy holdings and employing strategies to hedge against oil price swings. Energy-related stocks, commodities, and financial instruments are likely to see heightened price movements in the near future.

This evolving situation highlights the critical role of geopolitical developments in shaping financial markets. Investors should stay alert to shifts in U.S.-Iran relations and the effectiveness of global energy contingency plans, as these will be key indicators of market risk and opportunity.