Probable forecastOpen
The U.S.-Iran War Enters Its Second Week
American troops are dying, the Strait of Hormuz remains closed, and Polymarket traders see almost no chance of normalcy returning before August.
Probable’s read
Medium confidence. Synthesized from prediction markets, professional analysts, public opinion, and official data.
Market cross-check: 3% — in line with Probable's read.
Sustained active military conflict is the reference class least likely to resolve within a two-week window; historically, strait closures tied to shooting wars have lasted months, not days. The Polymarket market prices this at 2%, and given nine consecutive nights of U.S. airstrikes reported by CNN, Al Jazeera, and The Guardian — with no ceasefire signal in any source — we see no reason to depart from that near-zero read, landing at 3% to allow for a very small tail on a surprise diplomatic capitulation.
What’s likely. With the U.S. now on its ninth consecutive night of strikes against Iran, as reported by CNN and The Guardian, and Iranian forces attacking infrastructure across Jordan, Kuwait, and Bahrain according to NBC News, an imminent return to normal shipping through the Strait of Hormuz looks essentially impossible before July 31. Brent crude has crossed $90 a barrel, as Reuters reported, which is a direct market signal that traders expect the disruption to persist. Senator Mark Warner told CBS News's Face the Nation that it is 'remarkable in many ways' there aren't more American casualties, suggesting the situation is fragile and escalation risk remains live. Probable puts the chance of the strait clearing in the next eleven days at roughly 3 percent — our realistic range runs from about 1 to 8 percent, and the upper bound requires imagining a sudden, unannounced diplomatic breakthrough that no source in our inputs even hints at.
The evidence
Prediction markets
Polymarket traders priced Strait of Hormuz traffic returning to normal by July 31 at just 2%, on roughly $792,000 in 24-hour volume.
The synthesis
How Probable got to 3 percent
The Polymarket market on Hormuz normalization sits at 2% with nearly $800,000 in volume — a liquid, credible signal. We start from that anchor and nudge slightly upward to 3% only because a nine-day-old active conflict always carries some non-zero tail for a surprise deal, but the news inputs give us no concrete reason for optimism: CNN reported a ninth consecutive night of U.S. bombings, NBC News documented Iranian strikes on Kuwaiti and Jordanian infrastructure, and The Times of Israel described Israeli interceptors firing over Eilat as Iranian missiles targeted Aqaba. With three confirmed American service member deaths in Jordan per PBS and The Washington Post — and no source reporting any diplomatic contact — the market's near-zero read appears well-calibrated, and Probable stays close to it.
Why it matters to you
The Strait of Hormuz carries roughly a fifth of global seaborne oil, and Reuters reported Brent crossing $90 a barrel as the conflict widened — an energy-price shock that flows directly into inflation data and household costs worldwide.
What to watch
Any confirmed diplomatic contact between Washington and Tehran — or a unilateral U.S. announcement of a pause in strikes — would be the first falsifiable signal that the 3% tail is closing in. Conversely, a fourth confirmed American troop death would likely push already-elevated escalation risk higher and make the market's near-zero read even harder to move.
Further reading
- The Washington Post — “U.S. teeters on return to all-out war with Iran after more troops killed”
- CNN — “US bombs Iran for ninth consecutive night as Hormuz tensions escalate”
- The Guardian — “US launches ninth night of Iran strikes as strait of Hormuz standoff sees oil price pass $90 a barrel”
- Reuters — “Brent oil tops $90 as US, Iran expand strikes in the Middle East”
- NBC News — “Iran and Kuwait report attacks on water and power infrastructure as strikes escalate”
- PBS — “U.S. military says 2 troops are dead and 1 is missing after Iran attacks a base in Jordan”
- The Times of Israel — “IDF fires interceptors over Eilat as Iranian missiles target nearby Aqaba in Jordan”
- CBS News — “Warner: 'Remarkable in many ways' there aren't more dead U.S troops in Iran war”
The question we’re forecasting
Will Strait of Hormuz traffic return to normal 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 Monday, July 20, 2026: Monday on Probable — Nine nights of U.S. strikes on Iran, a Hormuz standoff, and oil past $90 — but markets price almost no chance the strait clears by month's end..
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?