Will __ ships transit the Strait of Hormuz on any day by May 31?
Given normal traffic volumes through the Strait of Hormuz and the short remaining window, I assess a very high probability that IMF Portwatch will publish at least one daily transit count of 20 or more by May 31, 2026.
Analysis
IMF Portwatch is the designated resolution source and publishes daily 'Arrivals of Ships' for the Strait of Hormuz; no specific recent news was available to contradict normal shipping patterns, and the market has three days remaining in which any qualifying daily value can appear. The absence of accessible recent headlines increases reliance on baseline operational and historical patterns for this chokepoint rather than on a time-sensitive news catalyst.
Historically the Strait of Hormuz is one of the busiest maritime chokepoints in the world with routine tanker and merchant traffic supporting regional crude exports, product movements, and general cargo, so on most days the number of transits or arrivals recorded by monitoring services exceeds 20; modest daily variability is normal but long stretches below 20 are atypical absent major disruptions. Even if IMF Portwatch's methodology produces lower counts than some AIS aggregators, the threshold of 20 is low relative to typical industry experience for this waterway.
Market pricing (Yes: ~13.5%) appears inconsistent with baseline maritime activity and likely reflects either a misunderstanding of the counting methodology, short-term liquidity-driven pricing, or traders reacting to a narrow window late in the contract rather than to the historical distribution of daily counts; such market underpricing can persist but does not override physical shipping realities. Possible explanations for the low market price include prior days in the contract period where counts were below 20, which reduce the remaining opportunity set, and worries about data publication gaps or revisions, but neither explanation materially changes the underlying likelihood that at least one day reaches 20 given three remaining days.
External risk vectors that could plausibly push counts below 20 for multiple consecutive days include severe regional conflict, formal closure orders for parts of the Gulf, coordinated tanker boycotts, or a sustained and targeted disruption of AIS/data feeds used by IMF Portwatch; these are exceptional scenarios and, absent evidence they are unfolding now, remain low-probability tail events. Weighing the routine resilience of commercial flows, the operational necessity of Gulf exports, and the short remaining calendar window, the expected chance of hitting at least one day at or above 20 by May 31 is very high, though not certain because of the possibility of reporting gaps or sudden escalations.
Arguments
For
- Arguments for Yes: The Strait of Hormuz routinely handles dozens of commercial and tanker transits on a typical day, so a daily count of 20 or more is common under normal conditions.
- Commercial necessity for Gulf exports and the absence of a practical alternative maritime route make sustained low traffic unusual and unlikely to persist over an extended period.
- IMF Portwatch aggregates arrivals from multiple ship types (tankers, containers, bulk, Ro-Ro, general cargo), which broadens the pool of vessels that can push a daily count to 20 or more.
- Only one qualifying day is needed during the entire contract period, and with three days remaining the opportunity set, while small, still exists and is sufficient given typical daily volumes.
- Operational resilience and the presence of transit corridors with naval escorts in periods of tension usually allow commercial movements to continue rather than stop entirely.
Against
- Arguments against Yes: If IMF Portwatch's published counts systematically undercount transits versus other aggregators, the true number may be higher while the recorded number remains below 20.
- A recent pattern of daily counts below 20 earlier in the contract window would reduce the remaining probability that at least one day reaches the threshold before May 31.
- A short, sudden escalation in regional hostilities could cause several days of depressed transits and push all remaining days below 20.
- Reporting gaps, delayed uploads, or a data feed outage at IMF Portwatch could mean qualifying days are not published within the contract timeframe or are omitted.
- Market liquidity and trader behavior late in the contract can drive prices that reflect panic or technicals rather than underlying shipping fundamentals.
Key drivers
- The baseline daily volume of tanker and merchant traffic through the Strait of Hormuz, which historically often exceeds 20 ships per day.
- IMF Portwatch's data collection and classification methodology and coverage of AIS signals, which determine whether transits are counted as 'Arrivals of Ships'.
- Any short-term regional security incidents or military exercises that could temporarily reduce commercial transits.
- Commercial incentives for oil and cargo carriers to continue using the Strait because there is no practical maritime alternate route for Gulf exports.
- Timing and completeness of IMF Portwatch data publication, including whether recent days are posted or subject to delayed reporting or revision.
- Seasonal patterns in trade and chartering that affect tanker and cargo movements in late May.
Risk factors
- A major and sustained escalation of regional conflict that forces ships to avoid or delay transits through the Strait.
- A temporary shutdown or significant undercounting in IMF Portwatch's data feed or delayed publication that hides qualifying days.
- Targeted attacks, sanctions, or insurance premium spikes that cause carriers to reroute or anchor outside the Strait for extended periods.
- Anomalous weather event or navigational closure affecting transit capacity for several consecutive days.
- Concentrated scheduling that causes daily traffic to cluster below 20 during the days remaining in the contract despite higher weekly volumes.
- Trader misinterpretation of the IMF Portwatch definition of 'Arrivals of Ships' leading to market pricing that diverges from physical likelihoods.
Scenarios
Best case
Routine commercial activity continues and IMF Portwatch publishes its daily figures on schedule, with at least one of the remaining days showing 20 or more transits due to typical tanker and cargo flow patterns, producing a Yes resolution well before the deadline.
Most likely
Normal traffic levels prevail and IMF Portwatch publishes complete data on schedule, resulting in at least one day with 20 or more arrivals before May 31, producing a Yes resolution, though a small chance remains for reporting anomalies or rare disruptions to prevent that outcome.
Worst case
An exceptional combination of a short regional shutdown, targeted attacks or embargoes, and a simultaneous data publication outage at IMF Portwatch suppresses recorded arrivals below 20 on all remaining days or prevents publication within the contract window, yielding a No resolution despite baseline shipping volumes.
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