Oil Markets Have Priced a Hormuz Recovery That Tanker Data Doesn't Support
Vessel U-turns, delayed LNG forecasts, and escalating US sanctions suggest Iran's grip on Hormuz is loosening more slowly than Brent prices imply.
ICE Brent crude front-month was trading at $86.52 a barrel on Wednesday (2026-08-26), down more than seven dollars from Friday (2026-08-21)'s session price of $93.61, as paper markets extend the retreat from the war-premium highs above $105 that crude hit in late May (2026-05-20). The assumption driving that selloff is that Iranian supply flows through the Strait of Hormuz are normalising. The vessel data accumulating this month challenges that read.6,7,1
The June 19 (2026-06-19) peace deal between Washington and Tehran sent Brent tumbling. Saudi-flagged tankers carrying 6 million barrels of crude began transiting the reopened strait within hours of the presidential signatures, and analysts projected the agreement would release more than 85 million barrels of Gulf crude into global markets. Brent shed roughly a quarter of its May-peak value in the weeks that followed the June 19 deal.3
The transit has not stayed clean. OilPrice.com reported on August 18 (2026-08-18) that Hormuz traffic had become "even more erratic than before," with vessels meandering and U-turning as they approached the chokepoint, uncertain how to proceed amid continuing security threats and Iran's insistence on controlling the passage. A ship was struck by a projectile off the Omani coast on June 25 (2026-06-25) — during the peace negotiations themselves — before prices rebounded on the news.6,4
Naysan Rafati, Iran senior analyst at the International Crisis Group, identified the test in June (2026-06-19). "The first test is at sea," he told RFE/RL. "Does traffic in Hormuz start to creep up? Do the Iranians still try to harass?" By August 18 (2026-08-18), two months on, the behavioural evidence on the water had not delivered a clear answer.2
New US sanctions add another layer. Washington vowed on August 21 (2026-08-21) to impose what was described as unprecedented sanctions targeting Iran, even as Brent prices retreated toward pre-conflict territory. Tightening sanctions simultaneously with unresolved vessel risk at Hormuz could suppress Iranian supply for longer than current prices reflect.7
The LNG market has already begun pricing in a slower recovery. Consultancy ICIS told Montel in July (2026-07-17) that it had revised its forecast for the return of Persian Gulf LNG supply, pushing the expected window back from August-September to October-November following the latest round of US-Iran clashes. ICIS analysts said the delay could lead to the first contraction in global LNG supply since 2012, upending earlier expectations of sufficient or even surplus volumes. JKM Asian LNG prices stood at $23.32 per MMBtu on Wednesday (2026-08-26), not yet signalling immediate stress. But the ICIS timeline revision is a leading indicator of physical tightening that spot prices have not yet absorbed.5
The forecasting community was not unanimous heading into the conflict. Citi, writing on May 19 (2026-05-19), expected Brent to reach $120 in the near term, arguing markets were underpricing prolonged supply disruption. Wood Mackenzie had outlined a tail scenario in which prices approached $200. Both calls overshot by a wide margin. The risk is that markets now overcorrect in the opposite direction and price in a supply restoration that is still months away from being operational.1
In mid-June (2026-06-19), Tim Waterer, chief market analyst at KCM Trade, said traders were waiting for "hard evidence that tanker traffic through the Strait of Hormuz is actually normalising before committing to the next leg lower." That evidence has not arrived. Whether vessel behaviour at Hormuz in September aligns with the smoother transit that Brent's current $86 level implies, or confirms another slippage in the supply timeline, is the specific thing crude traders should be tracking.3