Strait Of Hormuz Odds: When Does Traffic Return?
Few questions in global markets carry more standing demand than when the Strait of Hormuz reopens, and there is now a live, CFTC-regulated market putting a number on it. Kalshi runs a deadline ladder on when Strait of Hormuz shipping traffic returns to normal, defined by a specific shipping metric, and it prices roughly a 45 percent chance that happens before January 2027. We had six AI models read that same ladder without ever seeing the price, and they came back lower across the board, near 35 percent on that same date, for one repeatable reason: a political reopening is not the same as vessels actually returning.
The Quick Answer
The market is more optimistic than our panel at nearly every rung. Kalshi prices Strait of Hormuz normalization before January 1, 2027 at 45¢ and before July 1, 2027 at 65¢, while pricing the next few weeks at almost nothing (8¢ before September 2026). Our six-model panel, run price-blind, blended to 35% on the January 2027 question, about ten points under the market, and stayed under the market on every later rung too. It also faded the linked US-Iran nuclear-deal board, pricing a deal before January 2027 near 15% against the market's 22¢. The whole story is the gap between a headline and a shipping metric: real traffic has to physically return, and four attempted reopenings have already failed this year. The full model-by-model board, the shipping-data settlement rule, and the second market on a nuclear deal are all below.
Get the panel's verdict when this settles. We grade every model call in public the moment a market resolves. Want the re-scored board the next time the Strait of Hormuz news wave breaks, or when PortWatch traffic actually turns? We post it the moment the market moves or settles, no cost and no code. Bookmark this page and check back.
New to event markets? If you have never read an exchange quote instead of a headline, start with our beginner's guide to Kalshi, which covers the mechanics this piece assumes.
The Market
| Venue | Kalshi, a CFTC-regulated exchange (18+, availability varies by state, as of August 2026) |
| The Event | Kalshi series KXHORMUZNORM: when the Strait of Hormuz returns to normal shipping, a deadline ladder |
| The Contract | Official rule, verbatim: "If the 7-day moving average of transit calls through the Strait of Hormuz as reported by the IMF PortWatch is above 60 before [date], then the market resolves to Yes." It settles on a shipping-data metric, the IMF PortWatch 7-day moving average of transit calls, not on any political announcement |
| Last-Trade YES Prices | Before Jul 1, 2027: 65¢. Before Jan 1, 2027: 45¢. Before Nov 1, 2026: 26¢. Before Sep 1, 2026: 8¢. Before Aug 15, 2026: 1¢. The mid and long rungs carry tight two-sided quotes on large open interest (180K to 1.1M contracts), so this is a liquid, actively quoted board. Prices as of August 3, 2026 |
| How To Read It | The ladder is a cumulative distribution over time. Each rung is the probability the metric clears 60 before that date, so the numbers only rise. The shape, near zero now and climbing past 60 cents by mid-2027, is the market saying a reopening is a slow, months-out process |
What "Return To Normal" Actually Means Here
This market turns on a distinction that most headlines skip: it settles on a number, not a narrative. Normalization is defined mechanically as the IMF PortWatch 7-day moving average of daily transit calls climbing above 60. Before the crisis, the strait handled roughly 88 to 100 transit calls per day, carrying about 20 million barrels of oil a day, close to 20 percent of the world's seaborne oil and a similar share of its LNG. A threshold of 60 is therefore about two-thirds of the normal daily flow. It is not a full recovery; it is a clear, sustained return of most of the traffic.
The gap between that threshold and today is enormous. As of early August 2026, transits are a small fraction of normal, around 10 vessels on July 23 against the roughly 88-per-day baseline, close to where they have sat since the disruption began. For any rung on this board to resolve Yes, daily transit calls have to rise roughly sixfold and hold long enough to pull the seven-day average over 60. That is the single most important fact on the page: a ceasefire headline does not move this market, and a signed deal does not either. Only ships do.
The Timeline That Frames The Odds
The reason the panel is cautious is a five-month record of reopenings that did not hold. The disruption began with US-Israeli airstrikes on Iran on February 28, 2026; the IRGC confirmed a strait closure on March 2, and by early March traffic had fallen roughly 70 percent, averaging about six ships a day. Since then, four separate de-escalations have each been announced and then failed to restore shipping: a ceasefire on April 8, an Iranian announcement allowing commercial traffic on April 17, the Trump-Pezeshkian "Islamabad Memorandum" on June 17, and an interim truce that broke down on July 8. As recently as July 31, an attack hit the LNG tanker Gaslog Shanghai. Each announcement was real; none of them lifted the PortWatch average anywhere near 60.
That history is exactly why the early rungs are already effectively decided. The deadlines on or before mid-August 2026 fall in a window where traffic never recovered, so those contracts read as settled No regardless of what happens next. The live question is everything from September 2026 onward.
The Ladder, And Why It Steps Where It Does
| Deadline | Market YES (last trade) | AI blend | What it prices |
|---|---|---|---|
| Before Aug 1, 2026 | settled NO | n/a | Deadline already past, with traffic near 10 a day |
| Before Aug 15, 2026 | 1¢ | 2% | A sixfold traffic recovery in under two weeks |
| Before Sep 1, 2026 | 8¢ | 6% | Normalization within roughly four weeks |
| Before Oct 1, 2026 | 18¢ | 12% | A durable deal in August plus a fast shipping recovery |
| Before Nov 1, 2026 | 26¢ | 20% | Traffic back to two-thirds by mid-fall |
| Before Dec 1, 2026 | 35¢ | 27% | Normalization by early winter |
| Before Jan 1, 2027 | 45¢ | 35% | Normalization by the end of 2026 |
| Before Apr 1, 2027 | 55¢ | 48% | A recovery holding into early 2027 |
| Before Jul 1, 2027 | 65¢ | 58% | Normalization at any point before mid-2027 |
Kalshi series KXHORMUZNORM, quotes retrieved August 3, 2026. The August 1 rung's deadline has already passed with traffic near 10 a day, so it reads settled No. The AI blend is the equal-weight mean of six models after a revision round, described below.
Read the ladder across and the shape is a slow climb, not a step. The market prices almost nothing in the next few weeks, because even an immediate, durable deal cannot rebuild a sixfold traffic recovery that fast. It then accrues steadily: 26 cents by November, 45 cents by the new year, past 60 cents by mid-2027. That curve is the market saying a reopening is coming eventually but on a multi-month clock. Our panel drew a similar curve, sitting a notch below the market at nearly every rung, the lone exception being the near-dead August rung where the two are within a cent of each other.
Prices refresh during the news cycle. The quotes on this page carry an "as of" date because a live board moves, and this is a fast news subject. When a new Hormuz headline breaks, a ceasefire is announced, or the PortWatch traffic count turns, we re-read the market and update the stamp. The shape of the argument, a slow multi-month climb gated on real vessels, is what carries the piece, and the dated quote is the evidence.
Why The Panel Fades The Market
The panel's caution comes from two things it weighed more heavily than the market appears to. The first is the base rate: four announced de-escalations in five months have each relapsed within weeks, so no single new headline, including the contested August talks, gets treated as durable until traffic confirms it. The second is a mechanical lag. Even if a deal holds, the models estimated it takes roughly four to eight weeks for a political settlement to show up as a seven-day average above 60, because war-risk insurance premiums, rerouted tonnage, and crew confidence all recover slowly, and after repeated head-fakes shippers demand a proven quiet stretch before returning. The April reopening announcement is the cautionary case: it was made, and traffic still never approached 60.
Put those together and the near rungs collapse toward zero while probability accrues only into late 2026 and 2027, which is precisely the panel's shape. The models are not calling a permanent closure; all six put the mid-2027 rung between 55 and 60 percent, a near coin flip. They are saying the market has priced the reopening a little early at every step.
The one-line read: the market and our panel agree a Hormuz reopening is a slow, months-out process and that the near-term rungs are near-dead. They split on pace. The market prices normalization by January 2027 at 45 cents; our panel, weighing four failed truces and the weeks it takes vessels to actually return, prices it closer to 35.
What The Market Is Pricing
At 45 cents before January 2027 and 65 cents before July 2027, the market is drawing a clear picture: no reopening in the immediate term, a better-than-even chance of one by mid-2027, and a steady accrual in between. The August 1 to 3 diplomatic weekend, when President Trump said he called off a planned strike citing an imminent deal, is the kind of catalyst that can move these quotes. Our panel, which never saw the prices, agrees on the overall arc but reads it as slightly slower at every rung, because it discounts a contested headline that Iran has publicly disputed and adds the mechanical delay before any deal becomes vessels. The disagreement is not about direction; both sides think this eventually reopens. It is about how many weeks the market is pricing away.
Every number in this piece gets graded in public once the market settles. You can see how this series has scored on past calls in the full graded scoreboard, which we rebuild as markets resolve.
The Panel: How Six Models Read It
Our panel runs eight AI seats; six returned a verdict on this board this cycle (the other two were unavailable at run time, and we report that rather than quietly backfill it). Each model received the same dated, sourced context, the settlement rule, the normal baseline and current traffic, the five-month timeline, and the live August diplomatic picture, and never saw a market price. Each built one distribution over when traffic normalizes and read the deadlines off it, so its numbers are internally consistent by construction. The table shows the post-revision figures.
| Model | Before Jan 1, 2027 | Before Jul 1, 2027 |
|---|---|---|
| Claude Fable | 35% | 58% |
| Claude Opus | 35% | 60% |
| Claude Sonnet | 33% | 56% |
| GLM 5.2 | 32% | 55% |
| Kimi K3 | 38% | 58% |
| DeepSeek V4 | 35% | 60% |
| Blended Verdict | 35% | 58% |
Model estimates generated 2026-08-03. These are model estimates, not predictions of fact and not financial or trading advice. Models are frequently wrong; the market price reflects real traders' money.
The six seats sit in a remarkably tight band, from 32 to 38 percent on the January 2027 rung and 55 to 60 percent on mid-2027. That agreement is itself a signal: fed the same facts blind, every model independently landed under the market, and a revision round in which each read the others' anonymized reasoning barely moved the blend. When a diverse panel converges without seeing the price and lands consistently below it, the disagreement with the market is structural, not noise.
The Full Reasoning
These rationales are reproduced from the run. The panel also ran a convergence round in which each model read the others' anonymized reasoning and could revise; on this board it produced agreement rather than movement, which is worth stating plainly.
I model the probability of a durable de-escalation as the binding driver: given four announced de-escalations that all relapsed, I assign roughly 15% that the contested August talks produce a de-escalation that holds through September, rising to about 40% by year-end and 65% by mid-2027. I then add a mechanical lag of four to eight weeks from any durable political settlement to a seven-day PortWatch average above 60, since a sixfold traffic recovery requires war-risk insurance repricing, rerouted tonnage returning, and sustained crew confidence. — Claude Fable
The base rate from four failed de-escalations anchors near-term probabilities low: each announcement relapsed within weeks. Even if a deal holds, the mechanical lag means a sixfold traffic recovery to sustain a seven-day average above 60 takes roughly four to eight weeks after a durable ceasefire. This makes the August 15 rung near-zero and pushes realistic Yes windows to October through December at earliest. The single development that would most move estimates: a verified, sustained ceasefire with the IRGC standing down maritime threats, confirmed by AIS data showing transits climbing above 40 a day. — GLM 5.2
I put the probability of durable de-escalation near 10% by mid-August, about 25% by early September, 45% by mid-November, and 75% by spring 2027, reflecting four failed truces in five months and Iran's August 2 to 3 denial that talks exist. April's reopening announcement never lifted traffic near 60. The single most decisive development: a verified, sustained multi-week halt in attacks on shipping, which would compress the insurance-driven lag and pull both ladders forward. — Kimi K3
I assume a six-to-eight-week lag from a real political settlement to a sustained seven-day average above 60, since war-risk premiums, rerouted tonnage, and crew confidence recover slowly and shippers will demand a proven quiet stretch after repeated head-fakes. The one development that would most move me: PortWatch printing several consecutive days of transits above 40 to 50. — Claude Opus
The US-Iran Nuclear Deal Board
On the same page as the shipping question, Kalshi runs a second, linked market: a deadline ladder on whether the US signs a new nuclear deal with Iran, series KXUSAIRANAGREEMENT. It settles on a discrete diplomatic event, verbatim, "If the United States has agreed to, signed, or accepted a new Iran-US nuclear deal before [date], then the market resolves to Yes." The two boards are causally tied. In the two-phase framework President Trump described over the weekend, phase one is reopening the strait and phase two is denuclearization, which he called the slower half. So a shipping reopening can plausibly arrive before, and without, a nuclear deal, while a signed nuclear deal almost certainly implies the strait has already normalized.
| Deadline | Market YES (last trade) | AI blend | What it prices |
|---|---|---|---|
| Before Sep 1, 2026 | 3¢ | 2% | A signed deal within about four weeks |
| Before Oct 1, 2026 | 9¢ | 4% | A deal by early fall |
| Before Nov 1, 2026 | 16¢ | 8% | A signed deal by mid-fall |
| Before Dec 1, 2026 | 22¢ | 11% | A deal by early winter |
| Before Jan 1, 2027 | 22¢ | 15% | A deal by the end of 2026 |
| Before Feb 1, 2027 | 27¢ | 18% | A deal by early 2027 |
| Before Mar 1, 2027 | 30¢ | 21% | A deal by early spring 2027 |
| Before Jan 1, 2028 | 47¢ | 35% | A deal within about 18 months |
| Before Jan 20, 2029 | 52¢ | 47% | A deal at any point in the term window |
Kalshi series KXUSAIRANAGREEMENT, quotes as of August 3, 2026. The market prices the December 2026 and January 2027 rungs at the same 22¢. AI blend is the six-model equal-weight mean after the revision round.
The panel faded this board even harder than the shipping one, and the reason is structural. Every model priced the nuclear ladder below the shipping ladder at each matched date, following the announced sequencing, and then discounted a nuclear deal further as the harder, later half. As one seat put it, a nuclear agreement is a heavier lift historically, involving verification, enrichment limits, and sanctions, with failed precedents, so its probability rises slowly. The market's larger optimism here, 47 cents by January 2028 against the panel's 35 percent, is the same story as the shipping board: traders are pricing the weekend's diplomatic momentum more richly than a panel anchored on a five-month record of relapse.
The Near-Term Tail Worth Watching
The panel's near rungs are not quite zero, and it is worth naming why. Both boards floor the next-few-weeks rungs at 1 to 6 percent rather than at absolute zero, because a real, immediate breakthrough is not impossible; it is only unlikely to convert into a sixfold shipping recovery on that timeline. The one development that would move every number here is not a headline but the PortWatch data itself: several consecutive days of transit calls climbing toward 40 to 50 a day would confirm that a political de-escalation is finally translating into vessels, and would pull both ladders forward at once. Until the traffic count actually turns, the honest posture is a wide band tilted below the market, which is exactly what the panel drew.
Where You Can Actually Read This Market
Kalshi is a CFTC-regulated exchange and its event contracts are 18+, and state availability changes often enough that a list frozen into an article would be the wrong place to read it. Check eligibility on the platform, then use our guide to how Kalshi settlement works for how a metric-based contract like this one actually resolves, and our guide to Kalshi's commodity markets for the oil and energy context that moves alongside this one. Because a Hormuz reopening is fundamentally a geopolitics question, the natural companion in our verdict series is the 2026 House control verdict, where the same panel prices a very different political board with the same price-blind method.
What is worth weighing here is the distance between two independent reads. A liquid market of real traders prices Strait of Hormuz normalization at 45 cents by January 2027; a price-blind panel of six models, fed the same facts, lands at 35. They agree on the shape and the direction and disagree only on pace, which is the cleanest kind of disagreement to have, because it points at exactly the thing to watch: the PortWatch traffic count, and whether the next announced reopening is the one that finally holds.
OddsShopper's core is the sports side, where our free expert picks and odds tools live; this prediction-market series is the newer lane, and we grade every call in it publicly rather than sell you a subscription off it.
FAQ
Is the Strait of Hormuz still closed?
As of early August 2026, traffic is a small fraction of normal. Maritime trackers and the IMF PortWatch monitor put transits around 10 vessels on July 23, 2026, against a pre-crisis baseline near 88 to 100 per day. The strait has been heavily disrupted since US-Israeli airstrikes on Iran began on February 28, 2026, and the IRGC confirmed a closure on March 2. Several ceasefires and reopening announcements have been made since, but none has yet restored anything close to normal shipping.
When will the Strait of Hormuz reopen?
Nobody knows, and that uncertainty is exactly what this Kalshi market prices. The contract settles on a mechanical shipping metric, the IMF PortWatch 7-day moving average of transit calls climbing back above 60, roughly two-thirds of normal flow. As of August 3, 2026, the market prices about a 45 percent chance that happens before January 2027 and about 65 percent before July 2027. Our six-model AI panel, run without seeing those prices, came back lower, near 35 percent and 58 percent, because a political reopening still takes weeks to show up as real vessels.
What does this market actually settle on?
The IMF PortWatch 7-day moving average of daily transit calls through the Strait of Hormuz. If that average is above 60 before the market's deadline, the contract resolves Yes. It is a shipping-data metric, not a political declaration. A ceasefire or a signed deal does not settle it on its own; real traffic has to return to roughly two-thirds of normal and stay there long enough to lift the seven-day average over 60.
Is there a US-Iran nuclear deal coming?
It is contested. Over the August 1 to 3, 2026 weekend, President Trump said he called off a large planned strike after Gulf mediators told him a deal was close, and described a two-phase plan: reopen the strait first, then denuclearize. Iran publicly rejected the claim that talks were even scheduled. Kalshi runs a separate ladder on whether the US signs a new nuclear deal, and the market prices it at about 22 percent before January 2027; our panel priced it lower, near 15 percent.
Are these model verdicts advice?
No. Model verdicts are model estimates of how a market might resolve, not financial advice, not geopolitical predictions, and not an endorsement of any government or position. Treat them as one neutral input among many. Prediction-market contracts on Kalshi are CFTC-regulated event contracts, available to those 18 and older where legal.
The Real Answer To "When Does The Strait Reopen"
Strip away the mechanics and this board answers a question that oil desks, shippers, and ordinary readers all type into a search bar. When does the Strait of Hormuz get back to normal? A live CFTC-regulated market says better than even by mid-2027, and 45 cents by the start of it. Six AI models that never saw that price agree on the arc but read it slower, at 35 percent by January 2027, because a reopening is measured in returning ships, not press conferences, and four attempts this year have already come and gone. Both agree on the shape of it: not soon, not never, and gated on a traffic count that has not yet turned. That count is the number to watch.
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