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Strait of Hormuz traffic returns to normal by September 30?

0xa08a5ce99e14ce0b22767af6f16c08a2ab012249444c20887193a9a3e98e11fc · Financials · 2026-08-06
32%
Agent
32%
Market Price
+0.5%
Edge
medium
Confidence
Volume: 2,041,026
Spread: 1.0c
Days to resolution: 54
Markets in event: 1
Final Rationale
The Polymarket anchor for this exact question is 31.5%, and both forecasters shaded slightly below it while implicitly requiring a durable settlement. The critique is right that resolution needs only a single day with 7DMA ≥60 — and the June MoU already produced a 51-52 print — so a second short-lived ceasefire (plausible given the Oman safe-route coordinates and possible European mine-clearance) could clear the bar without lasting peace; that argues against shading below the anchor. Offsetting this, traffic was ~2 ships/day on Aug 2, mines and the reimposed blockade remain, war-risk premia are 7.5-10% of hull, and the June peak still fell 15% short of 60, while the Aug 31 adjacent market prices only 18.5%. Balancing the bimodal fast-snap-back vs. slow-grind uncertainty, I settle essentially at the market price with a hair upward from the two forecasts: Yes 32%, No 68%.
Price vs. prediction
How the market moved after the agent's call. Solid blue line is the actual market price; dashed line is the agent's static forecast at $t{=}0$.
$n = 28$ follow-ups
1. Planner Opus · Fermi decomposition + tool plan
Tools chosen: polymarket_direct claude_news claude_news gdelt_news polymarket_related kalshi_related code_execution wikipedia
Sub-questions (Fermi decomposition)
  1. What is the most recent IMF Portwatch 7-day moving average of transit calls (Arrivals of Ships) for the Strait of Hormuz, and what was the pre-disruption baseline level?
  2. What event caused Hormuz traffic to fall below 60 transit calls/day, and is the Strait currently closed, mined, militarily contested, or merely under elevated war-risk insurance?
  3. What is the trend in Hormuz transit calls over the last 2-6 weeks — rising, flat, or falling — and how much daily-call recovery per week would be needed to reach a 60 7-day MA before Sept 30, 2026?
  4. Are there active ceasefire, de-escalation, or de-mining/convoy-escort efforts (US/allied naval operations, Iran-US or Iran-Israel negotiations) that could restore commercial shipping within weeks?
  5. How quickly did shipping volumes recover in analogous chokepoint disruptions (Bab el-Mandeb/Red Sea 2024, prior Hormuz tanker war episodes) once hostilities paused?
  6. What is the current Polymarket price and price history for this market, and do any Kalshi or other Polymarket markets on Hormuz closure/oil disruption imply a different probability?
Planner reasoning
This is a Polymarket question anchored on IMF Portwatch's 7-day moving average of Strait of Hormuz transit calls crossing ≥60 at any point before Sept 30, 2026 — a threshold that implies traffic has collapsed well below its historical norm (~90-110 daily calls), presumably due to a conflict-driven disruption or closure. The key empirical inputs are: the current Portwatch reading and its trend, the military/diplomatic status of the Strait, historical recovery speeds after prior shipping disruptions (Red Sea/Bab el-Mandeb as an analogue), and the market's own price plus any cross-venue quotes. I'll anchor on the Polymarket price, then gather news on the disruption's status and Portwatch numbers, and use code execution for a hazard-rate/base-rate calculation over the remaining window.
2. Research Parallel tool calls
ToolStatusTimeItemsSummary
polymarket_direct OK 0.3s 1 ## This Market's Polymarket Data **Strait of Hormuz traffic returns to normal by September 30?** - Current price (probability): 31.50% - 7-day price change: +16.00% - 30-day price change: -1.00% - Total volume: $2,041,026 (USD notional) - Price range: 15.50% - 60.00% - Data points: 35 days
claude_news OK 29.7s 17 Based on IMF PortWatch data and related tracking sources as of early August 2026: - **Pre-crisis baseline**: Roughly 88 commercial vessels per day in peacetime, per the IMF PortWatch chokepoint dataset , with the 7DMA averaging 93.7 across 2025 and reaching 107.3 on 24 February 2026 just before t
claude_news OK 28.0s 9 ## Key Findings: Strait of Hormuz Status (as of early August 2026) - **Crisis originated Feb 28, 2026**: The Iranian Revolutionary Guard Corps issued warnings forbidding passage through the strait, boarded and attacked merchant ships, and laid sea mines in the strait, while the US simultaneously b
gdelt_news OK 158.1s 20 GDELT: 20 articles across 3 queries (lookback=45d). 'Strait of Hormuz shipping traffic resume': 10 hits | 'Hormuz tanker transits recovery': 10 hits | 'Iran Strait of Hormuz closure ceasefire': error GDELT rate-limited after retries (429)
polymarket_related OK 2.9s 10 Scanned 100 active Polymarket markets, kept 10 matches. keyword 'Strait of Hormuz': 4 markets | keyword 'Iran': 6 markets | keyword 'oil price': 0 markets
kalshi_related OK 2.8s 0 0 related markets / summaries. keyword 'Hormuz': no matches | keyword 'Iran': no matches | keyword 'oil': no matches
code_execution OK 80.9s 0 **Model setup (placeholder inputs — override freely):** - Current 7‑day MA of Hormuz transit calls: tested at **30 / 40 / 55** calls/day (mid‑disruption levels) - Pre‑disruption baseline: **90–110** (midpoint ≈ 100) - "Touch" threshold for recovery signal: **60** calls/day (7‑day MA) - Weeks to reso
wikipedia OK 0.1s 2 Fetched 2 Wikipedia entries (0 missing pages).
3. Evidence Brief Sonnet · 8260 chars
# Current state The Strait of Hormuz has been effectively closed to routine commercial shipping since a Feb 28, 2026 US/Israel-Iran war and Iranian mining/attacks; a US naval blockade (imposed Apr 13, briefly lifted after a June 17 ceasefire MoU, reimposed in July after the MoU broke down) compounds the closure. As of Aug 5, 2026, transit calls remain near zero (2 ships/day on Aug 2 vs. ~88-107/day pre-crisis baseline), far below the 60-call 7DMA threshold this market requires. Resolution depends on IMF PortWatch data alone, not general "normalization" sentiment. # Timeline of key events - 2026-02-28: US/Israel launch operations against Iran; Iran mines strait, IRGC bans transit, attacks merchant ships — traffic collapses (confirmed, Wikipedia/multiple). - 2026-03 (late): 7DMA transit calls trough at 2.7 (confirmed, RAND). - 2026-04-13: US begins naval blockade of Iranian ports, creating "dual blockade" (confirmed, multiple). - 2026-04-19: 7DMA at 12.0 (confirmed, RAND). - 2026-04 (unspecified): US begins de-mining operations (reported, The Hill). - 2026-06-17: US-Iran ceasefire MoU signed, partial reopening begins (confirmed, multiple). - 2026-06-24/25: 7DMA reaches "high watermark" of 51-52 before Iran "soft closes" strait again (confirmed, RAND/Kalshi). - 2026-07-07/08: Renewed US-Iran strikes; 3 vessels struck (incl. Qatari LNG carrier); tanker traffic collapses again (confirmed, multiple). - 2026-07-13: US naval blockade reimposed after MoU collapse; CENTCOM redirects 44 vessels, disables 2, boards 2 (confirmed, CNN). - 2026-07-21/22: Transits plummet ~66%; only 59 India-bound vessels transited since war began (reported, GDELT). - 2026-07-23: War-risk insurance at 7.5-10% of hull value (vs. 1-3% pre-war) (confirmed, Al Jazeera). - 2026-07-27/28: US-Iran fighting pauses over weekend; oil dips 5%; Oman proposes joint-control/voluntary-fee management mechanism for strait (reported, multiple outlets). - 2026-07-30: Strait "effectively closed" to routine shipping (reported, Carra Globe). - 2026-07-31: Vessel transits hit two-week high as LNG traffic resumes (reported, S&P Global via ANI). - 2026-08-02: Only 2 ships transit (vs. ~73/day normal) (confirmed, straits.live). - 2026-08-03/04: UKMTO reports projectile strikes near Khasab, Oman; Iran weighs allowing Europe to clear mines (reported, Bloomberg/Windward). - 2026-08-04/05: Iran-Oman talks on safe shipping route "constructive"; coordinates for safe route agreed; Trump says reopening "soon" (reported, CNN/Moneycontrol). # Event Will IMF PortWatch's 7-day moving average of Hormuz transit calls reach ≥60 on any date before Sept 30, 2026? # Outcomes to forecast - Yes (7DMA ≥60 achieved by Sept 30, 2026) - No (never reaches 60) # Kalshi market anchor No Kalshi-direct data returned (kalshi_related found 0 matches for "Hormuz"/"Iran"/"oil"). Primary cross-market anchor is **Polymarket: 31.5% Yes**, up sharply (+16pts, 7-day), roughly flat over 30 days; historical range 15.5%-60%; volume $2.04M across 35 data points — indicating meaningful, somewhat volatile trading interest with no unusual thinness. # Sub-question answers 1. **Most recent 7DMA / baseline** — Baseline ~88-107 calls/day pre-crisis (peaked 107.3 on Feb 24, 2026); as of Aug 2, 2026 traffic is ~2 ships/day, effectively near zero. [claude_news/RAND/straits.live] 2. **Cause / current status** — Combined Iranian mining/attacks/transit bans (since Feb 28) plus a reciprocal US naval blockade of Iranian ports (Apr 13-present, briefly lifted then reimposed July). Strait is militarily contested and under active blockade, not merely elevated insurance. [Wikipedia, CNN, RAND] 3. **Trend (last 2-6 weeks)** — Volatile and non-monotonic: brief spike to 7DMA ~51-52 (June 24-25) after ceasefire MoU, then collapse to near-zero after July 7-8 renewed strikes; late-July saw a partial two-week-high LNG-driven uptick before falling again by Aug 5. No sustained climb toward 60 evident. [RAND, GDELT, NBC] 4. **De-escalation/negotiation efforts** — Active: Iran-Oman talks reached agreement on safe-route coordinates (early Aug); Iran considering allowing European mine-clearance; Trump claims reopening "soon." No finalized, durable deal as of Aug 5. [CNN, Bloomberg] 5. **Analogous recovery precedents** — Not directly answered in research; general chokepoint literature (Bab el-Mandeb) not detailed here. Wikipedia notes Hormuz had never been closed for an extended period in prior Mideast conflicts, making this an unprecedented case with no clean analog cited. 6. **Cross-market pricing** — Polymarket same-market: 31.5% Yes. Related Polymarket markets: Aug 15 deadline "normal by" at 1.9% Yes (nearly dead), Aug 31 deadline at 18.5% Yes, Dec 31 deadline at 62.5% Yes — showing probability rising monotonically with more time, consistent with a slow-recovery/persistent-blockade base case. "US ends Iranian blockade by Aug 15" priced at 66% Yes (different resolution criterion, more lenient). # Key facts (high-confidence, factual) 1. [RAND/Wikipedia] Pre-crisis baseline 7DMA ~88-107 calls/day; crisis began Feb 28, 2026. 2. [claude_news/straits.live] As of Aug 2, 2026, only 2 ships transited (vs ~73-88/day normal) — traffic at ~2-10% of baseline. 3. [RAND] 7DMA briefly reached 51-52 on June 24-25, 2026 — the closest approach to the 60 threshold on record — before collapsing again. 4. [CNN, Bloomberg] Iran-Oman safe-route talks and mine-clearance discussions ongoing but unfinalized as of Aug 5, 2026. 5. [Al Jazeera] War-risk insurance still 7.5-10% of hull value vs 1-3% pre-war. # Cross-market signals - Kalshi related: none found. - Polymarket (same event): 31.5% Yes, volatile (range 15.5-60%), +16pt week-over-week jump likely reflecting Oman/Iran de-escalation talks news. - Polymarket (adjacent horizons): Aug 15 deadline 1.9% Yes, Aug 31 deadline 18.5% Yes, Dec 31 deadline 62.5% Yes — confirms probability scales with time horizon, consistent with slow-grinding-recovery base case rather than imminent snap-back. - Sportsbook implied: N/A (not applicable to this event type). # Analyst opinions and speculation - claude_news synthesis: "a full return to the ~60+ 7DMA threshold by September 30, 2026 appears unlikely absent a durable resolution" — leans No given repeated ceasefire-breakdown cycles. - CFR: structural obstacles (mines, infrastructure damage, mistrust) suggest recovery will be slow even post-deal. - code_execution Monte Carlo (placeholder inputs, not calibrated to confirmed Aug data): blended P(Yes) range 0.07-0.84 depending on assumed current MA/horizon; mid-case (MA~40, 20 weeks) ≈0.34, closely matching Polymarket's 31.5%. - Trump (Aug 5, per CNN): says reopening "soon" — optimistic but no confirmed deal. # Directional lean per outcome - **Yes**: Supported by active Oman-mediated safe-route agreement, Iran weighing European mine-clearance, Trump's optimistic rhetoric, precedent that 7DMA already touched ~51-52 once (close to 60), and ~8 weeks remaining before close (long enough for a single-day spike given "any date" resolution wording). - **No**: Supported by current near-zero traffic (2 ships/day Aug 2), repeated ceasefire-collapse cycles (June MoU failed within 3 weeks), active mines/attacks persisting into early August, elevated insurance costs, no finalized deal, and consistently low Polymarket pricing across nearer-term deadlines (Aug 15/31 both far below 50%). # Gaps / unknowns - No confirmed exact 7DMA value for early August (research cites Aug 2 single-day count of 2, not 7DMA). - No Kalshi-direct price was returned for this specific ticker — anchor relies solely on Polymarket. - Unclear whether Oman safe-route deal, if finalized, would produce rapid (days) or gradual (months) traffic ramp-up. - No historical Bab el-Mandeb/tanker-war recovery-speed data was retrieved despite being requested. # Calibration anchors - Polymarket YES price (anchor): 31.5%, recent range 15.5-60%, volume $2.04M. - Adjacent Polymarket deadlines: Aug 15 (1.9%), Aug 31 (18.5%), Dec 31 (62.5%) — probability rises with time, implying market views recovery as gradual, not imminent. - Precedent: 7DMA peaked at only 51-52 once in ~5 months of crisis (June 24-25) before relapsing to near-zero — the "60" bar has never yet been reached.
4. Forecasters Opus + GPT · in parallel
claude-opus-5
medium
Yes 28%
No 72%
Polymarket prices this exact question at 31.5% Yes, with adjacent deadlines at 18.5% (Aug 31) and 62.5% (Dec 31), implying markets see recovery as gradual rather than imminent. The 60-call 7DMA bar has never been reached in ~5 months of crisis — the best-ever print was 51-52 on June 24-25 during the short-lived ceasefire MoU, which collapsed within three weeks. As of Aug 2, transits were ~2/day versus an 88-107/day baseline, with mines, active strikes near Khasab, a reimposed US blockade, and war-risk premia at 7.5-10% of hull value all intact. Getting to ≥60 by Sept 30 would require a durable deal plus an unusually fast ramp (mine clearance, insurance repricing), so I shade slightly below the Polymarket anchor to 28%.
gpt-5.5
medium
Yes 30%
No 70%
Anchoring on the cross-market Polymarket Yes price of 31.5%, I make only a small downward adjustment because the brief shows traffic was still near zero as of Aug 2, far below the required 60-call 7DMA. The current-state and trend evidence point toward No: the strait remains militarily contested, the June recovery only reached 51-52 before collapsing, and recent attacks/blockade actions undermine a sustained ramp. Negotiation evidence points somewhat toward Yes because Oman-mediated safe-route talks, possible European mine-clearance, and Trump’s reopening rhetoric could produce a fast single-window spike before Sept. 30. Overall, the absence of a finalized durable deal and the nearby-deadline market prices being much lower than 50% keep No as the favored outcome.
5. Devil's Advocate Sonnet · red-team critique
1. Both forecasts nearly duplicate the Polymarket anchor (28% and 30% vs. 31.5%) with minimal independent adjustment, but neither addresses why Polymarket itself might be mispriced — e.g., the brief notes the same-market Polymarket price is "volatile (range 15.5-60%)" with a "+16pts, 7-day" jump, suggesting the anchor itself is unstable and possibly stale relative to fast-moving Aug 3-5 de-escalation news (Oman safe-route coordinates agreed, Iran weighing mine-clearance). 2. Neither forecaster explicitly reconciles the "any date before Sept 30" resolution wording with the precedent that 7DMA already hit 51-52 once during a brief ceasefire — this is a single-day-threshold (not sustained-average) question, so a second short-lived ceasefire/MoU (plausible given Oman talks) could plausibly push the 7DMA over 60 briefly even without a "durable" resolution, which both forecasts implicitly require. 3. Both treat the Aug 31 Polymarket price (18.5%) as strongly informative for the Sept 30 question, but the marginal probability added between Aug 31 and Sept 30 (structurally lower than the jump from Aug 31 to Dec 31: 18.5%→62.5%) is not decomposed — a full month of additional negotiation time (including a potential Oman deal maturing) could justify pricing closer to 35-40% rather than shading down from 31.5%. 4. Neither forecast weighs the mine-clearance/insurance-repricing lag explicitly: the brief flags "unclear whether Oman safe-route deal, if finalized, would produce rapid (days) or gradual (months) traffic ramp-up" as a genuine unknown, yet both forecasts assume gradual ramp-up without stating this as a real bimodal uncertainty (fast snap-back vs. slow grind), understating tail-Yes scenarios. 5. Both forecasts are very tightly clustered (28% vs 30%) despite claiming independent reasoning, suggesting anchoring bias/insufficient diversity in scenario analysis — neither explores a low-probability but plausible "sudden collapse of Iranian regime resolve" or "US unilaterally lifts blockade" scenario that could cause a rapid spike, nor a "renewed full-scale war" tail that would lock in No with near-certainty, both of which affect variance around the point estimate. 6. Neither critique addresses the absence of a Kalshi-direct price ("No Kalshi-direct data returned... 0 matches") — both silently substitute Polymarket without flagging that cross-platform arbitrage or differing resolution-criteria nuances (Polymarket's own related market "US ends Iranian blockade by Aug 15" priced at 66% Yes under looser criteria) could mean the Kalshi market, if it existed, might price meaningfully differently.
6. Aggregator Opus · final calibrated forecast
32% (medium confidence)
Yes: 32% No: 68%
The Polymarket anchor for this exact question is 31.5%, and both forecasters shaded slightly below it while implicitly requiring a durable settlement. The critique is right that resolution needs only a single day with 7DMA ≥60 — and the June MoU already produced a 51-52 print — so a second short-lived ceasefire (plausible given the Oman safe-route coordinates and possible European mine-clearance) could clear the bar without lasting peace; that argues against shading below the anchor. Offsetting this, traffic was ~2 ships/day on Aug 2, mines and the reimposed blockade remain, war-risk premia are 7.5-10% of hull, and the June peak still fell 15% short of 60, while the Aug 31 adjacent market prices only 18.5%. Balancing the bimodal fast-snap-back vs. slow-grind uncertainty, I settle essentially at the market price with a hair upward from the two forecasts: Yes 32%, No 68%.
Pipeline Timing
Total pipeline time: 268.2s
Per-tool research timings shown in the Research section above.