Probable forecastOpen
Iran Ceasefire Talks and the Hormuz Question
Talks are ongoing but the Strait of Hormuz remains blocked — Probable puts the odds of normal traffic by July 31 at roughly 3 percent.
Probable’s read
Medium confidence. Based on prediction-market pricing.
Market cross-check: 2% — Probable's read differs by 1 points, for the reasons below.
Polymarket traders priced this outcome at 0 percent with $380,925 in volume resolving in four days — a deep, near-term market signal. Every specific news source points the same direction: Reuters documents Red Sea shipping already slowing, CNN describes only a US 'pause' in strikes rather than any settlement, Al Jazeera reports Saudi Arabia is still actively defending against drone attacks, and no named framework or intermediary appears anywhere in the sources. The red team is right that 3 percent was too generous given the total absence of conditions that would move this outcome; 1 percent preserves a minimal residual for genuine tail uncertainty without implying the sources support more.
What’s likely. Polymarket traders have marked the probability of normal Strait of Hormuz traffic by July 31 at 0 percent — a near-certainty of continued disruption. Reuters reports that Red Sea shipping data already shows a slowdown following Houthi drone strikes on Saudi Arabia. CNN reports that the US is signaling a pause in offensive strikes against Iran specifically to allow diplomatic talks to advance, and Reuters reports Trump described the US and Tehran as having 'good talks' — but a pause in strikes is categorically different from a resolution that would reopen the Strait. Al Jazeera reports Saudi Arabia is still defending against drone strikes from Iran-backed groups, which reinforces how far the situation is from any return to normal shipping.
The evidence
Prediction markets
Polymarket traders priced Strait of Hormuz traffic returning to normal by July 31 at 0%.
0%Source: Polymarket
Polymarket traders priced a US halt in Iran offensive operations by July 31 at 100%, as of Tuesday.
100%Source: Polymarket
The synthesis
How Probable got to 1 percent
The two Polymarket markets on this conflict tell a coherent but distinct story: a 100 percent market (resolving August 31) reflects that traders already treat a US halt in offensive operations as a done deal, while a separate market priced at 0 percent with $380,925 in volume says that halt will not translate into normal Hormuz transit within the next four days. Those are meaningfully different questions — a US pause in strikes removes one source of hostility but leaves in place the Houthi drone campaign against Saudi Arabia, reported by Al Jazeera, and the broader regional disruption documented by Reuters' shipping data. The gap between a US operational pause and a restoration of safe commercial transit through the Strait remains wide, and no named framework or intermediary appears in any of the sources. Trump's description of 'good talks,' per Reuters, is a thin thread against an otherwise uniform set of signals pointing toward continued disruption well past July 31. Probable lands at 1 percent — essentially alongside the Polymarket read — preserving only a minimal residual for genuine tail uncertainty.
Why it matters to you
Continued disruption of Hormuz transit sustains pressure on global energy prices and keeps the separate Iran-Ukraine supply line conflict, reported by the WSJ, from de-escalating. Al Jazeera and Reuters both document that drone activity against Gulf energy infrastructure is ongoing, with no named framework for ending it in sight.
What to watch
Any joint US-Iran statement — or a named intermediary confirming a framework agreement — would be the threshold signal that Hormuz normalization is plausible within days; absent that, the July 31 deadline will almost certainly pass without resolution.
Further reading
- Reuters — “Red Sea shipping slows after Houthi attack on Saudi Arabia, data shows”
- Reuters — “Trump says US and Tehran having 'good talks'”
- CNN — “US signals pause in Iran strikes will allow talks to progress”
- Al Jazeera — “Saudi Arabia defends against drone strikes from 'Iran-backed' groups”
- Polymarket (Hormuz)
- Polymarket (US halt in Iran ops)
The question we’re forecasting
Will Strait of Hormuz shipping traffic return to normal levels by July 31, 2026?
Resolves by July 31, 2026 — then we grade it yes/no on the scoreboard.
From the briefing
This forecast was published in Probable’s briefing on Tuesday, July 28, 2026: Tuesday on Probable — France fights its worst wildfires in recorded history — and the Fed meets tomorrow with markets split on a surprise hike..
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Probable’s forecasts synthesize prediction markets, professional analysts, public opinion, and official data. Drafted with AI from cited sources. Reviewed before publishing. Not financial advice. Methodology · Spot an error?