The probability of a US declaration of war on Iran by the end of 2026 currently stands at 7.5%, a slight decline from 8% just a week ago. This fluctuation occurs against a backdrop of ongoing tensions between the US, Israel, and Iran, yet it does not seem to provoke a formal response from Congress.
For the near term, specifically by April 30, the market estimates a mere 0.4% chance of a declaration. This indicates that traders perceive almost no immediate risk of escalation. The most significant change has taken place between the predictions for April and December, where the outlook jumps from 0.4% to 7.5%, signaling a belief among traders that a potential triggering event may arise later in the year, rather than in the immediate future.
Trading activity in this market remains limited, with a daily USDC volume of only $314. Notably, it requires $4,248 to influence the price by 5 percentage points, highlighting the thin nature of this market. Consequently, a single large order can significantly impact pricing. The largest recent market movement recorded was a shift of 1 percentage point.
The implications of this conflict are notable as it has already disrupted activities in the Strait of Hormuz and elevated oil prices. However, despite the economic ramifications, there has not been a significant change in the odds related to a war declaration. This disconnect between escalating military actions and market stabilization suggests that traders currently view the situation as economic rather than a precursor to formal warfare.
What are the key factors traders should monitor? Congressional actions will be critical, including upcoming votes, any statements from officials like President Trump or Secretary of War Pete Hegseth, and alterations in the US military presence in the Persian Gulf region. Currently, purchasing a YES position at 7.5 cents could yield a payout of $1 if Congress does declare war, translating to a potential return of 13.3 times the investment. This gamble hinges on the expectation that diplomatic efforts and economic pressure will not succeed and that Congress will indeed take the unusual step of issuing a formal war declaration.