Strait of Hormuz traffic returns to normal by December 31?
I assess a high probability that IMF Portwatch will report a 7-day moving average of Strait of Hormuz transit calls at or above 60 on at least one date by December 31, 2026, with a best estimate of 78% based on historical traffic norms, economic incentives to resume transit, and current market pricing.
Analysis
The event requires a 7-day moving average of transit calls for the Strait of Hormuz at or above 60 on any date before December 31, 2026; because the threshold is a single-date test using a 7-day average, it is relatively easy to satisfy once daily transit counts return close to historical norms for even a short sustained window. Pre-disruption benchmarks for the strait (based on long-term shipping patterns and the strait's role as a major oil and LNG conduit) typically show daily transits comfortably above this threshold, which means that absent persistent or escalating disruption, market forces and shipping economics push traffic back toward those levels within months. The practical implication is that the market needs only a brief stretch of near-normal daily transits to resolve Yes, not a full and permanent restoration for the remainder of 2026.
Market-implied probability is high (Yes ~80.5%), driven by heavy volume and participant consensus that disruptions are likely transitory; the market price is a useful reference and suggests traders currently view resumption as likely. I start from market-implied odds but adjust modestly downward to 78% to reflect residual tail risks and data-coverage uncertainty; the liquidity and size of the market indicate that informed participants have already priced in much of the macroeconomic and diplomatic context. Given the strong economic incentives for tankers and cargo ships to resume shorter transits through Hormuz (fuel savings, schedule reliability), a sustained period of calm or effective mitigations would probably push a 7-day average above 60 well before year-end.
Key external drivers that could accelerate recovery include de-escalatory diplomatic steps, expanded naval escorts or international convoy arrangements, and lower insurance premiums as perceived risk declines; conversely, a single high-profile attack, sanctions-driven choke points, or maritime insurance spikes could reverse progress quickly. Seasonal and demand-side factors also matter: global trade patterns, refinery and tanker scheduling around northern-hemisphere winter inventories, and LNG shipment timing can create windows where traffic naturally peaks, increasing the chance of meeting the 7-day-average threshold at least once. Operational and reporting factors matter too — IMF Portwatch coverage and any revisions during the market period can materially affect whether a given uptick is captured and counted toward resolution.
The key reasons I do not assign near-certainty are (1) continued regional volatility remains a realistic possibility that could depress transit counts for weeks at a time, (2) the outcome depends on Portwatch's published series and any reporting gaps could undercount real traffic, and (3) single-date statistical quirks or late-year flare-ups could keep the 7-day average below 60 despite partial recoveries; combining these gives a modest discount to the market price but still supports a strong Yes probability of 78%.
Arguments
For
- Historically the Strait of Hormuz has sustained daily traffic well above 60, so baseline demand supports eventual recovery to that level.
- Economic incentives (reduced fuel and time costs) strongly motivate shipowners to resume the shorter route once risk moderates.
- Partial diplomatic progress or tacit de-escalation is often sufficient to restore traffic for brief windows that would satisfy the 'any date' condition.
- Increased naval escorts or international presence can quickly lower perceived transit risk and bring ships back into the strait.
- Seasonal spikes in cargo and tanker movements can create short-term stretches where a 7-day average exceeds 60 even if overall recovery is incomplete.
- Market pricing and heavy traded volume already imply high confidence, reflecting aggregated information from participants close to shipping and insurance markets.
Against
- A single high-profile incident (attack, mining, or seizure) could cause a long-lasting rerouting of commercial traffic away from Hormuz.
- Prolonged insurance cost elevations can keep operators on longer, more expensive routes, suppressing daily transit counts below threshold levels.
- IMF Portwatch may not capture all transits or could have reporting delays that prevent a qualifying 7-day average from being published.
- Geopolitical spillovers from nearby conflicts could keep international naval assets constrained and ship operators cautious.
- Economic slowdowns or surprising shifts in trade patterns could reduce ship movements such that even partial recovery fails to reach 60.
- Deliberate or accidental disruptions to port operations in adjacent countries could bottleneck traffic and keep averages depressed.
Key drivers
- Underlying commercial incentives for shorter, more economical transits through Hormuz that favor resumption once risk perceptions moderate.
- Diplomatic and military de-escalation steps that reduce the incidence of attacks and lower insurance premiums, encouraging shipping lines to return.
- Seasonal shipping patterns and commodity flows (refinery draws, LNG schedules) that can create temporary windows of elevated transit counts.
- Presence and visibility of international naval escorts or convoy arrangements that materially lower perceived risk for passing vessels.
- Global economic demand and oil export schedules, which push exporters and charterers to prefer the shortest route when feasible.
- IMF Portwatch data coverage and publication practices, since the resolution depends on the reporting capturing the uptick in transit calls.
Risk factors
- A new or escalated maritime attack or mine-laying campaign that causes carriers to reroute around Africa for an extended period.
- Sudden spikes in war-risk and hull-and-machinery insurance premiums that make transits uneconomic despite lower physical risk.
- Sanctions, port restrictions, or unilateral interdictions that reduce the number of ships scheduled to pass the strait.
- Underreporting, data gaps, or delayed publication by IMF Portwatch that could prevent observed recoveries from qualifying.
- Prolonged regional conflict elsewhere that diverts naval resources and leaves commercial shipping vulnerable in the strait.
- A mismatch between short-term shipping schedules and the requirement for a 7-day moving average, causing near-misses even in partial recoveries.
Scenarios
Best case
A rapid de-escalation combined with targeted naval escorts and falling insurance premiums leads to a clear rebound in daily transit counts well above 60 for multiple weeks, producing an early Yes resolution and leaving little ambiguity in the Portwatch series.
Most likely
A modest but meaningful decline in perceived risk and some international mitigation measures produce intermittent windows where daily transits sit above 60, with Portwatch recording at least one qualifying 7-day moving average before December 31, yielding a Yes resolution sometime in the second half of 2026.
Worst case
An escalatory incident or campaign of attacks plus sustained high insurance costs keeps carriers rerouted for months, Portwatch reports daily counts persistently below 60, and the market resolves No at year-end despite occasional localized increases that fail to reach the 7-day average threshold.
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