Crude Oil Holds Below €90 Despite War Shock as Hidden Hormuz Flows Emerge

Crude oil prices are consolidating below the equivalent of €90 per barrel as new indications of higher-than-reported exports through the Strait of Hormuz help explain why the Iran war has not pushed benchmarks above €100. Despite a deep global supply deficit, covert tanker traffic and strategic stock releases are cushioning the shock. Futures eased after a six-day rally, with Brent retreating toward about €81–€82 and WTI near €76–€77, as traders reassessed supply risks against evidence that more barrels are still moving out of the Persian Gulf than tanker trackers imply. A sharply wider IEA deficit forecast and the largest US inventory build since early 2023 underline that the market remains tight but not yet in crisis. Volatility is set to stay elevated as diplomacy over Hormuz stalls and doubts grow over the durability of unreported flows.

Prices

Brent for October slipped around 0.8% to roughly $88.25 (≈€81.5) per barrel in Asian trading on August 13, while September WTI fell about 1% to $82.44 (≈€76) after a 12% six-session surge.

The pullback signals some profit-taking as markets digest signs that seaborne supply via Hormuz, though disrupted, remains more resilient than feared. However, both curves still price a substantial geopolitical premium, with levels well above early-2026 averages and time spreads reflecting a persistent near-term shortage.

Supply & Demand

Despite severe regional disruptions from the Iran war and attacks on energy infrastructure, oil shipments through the Strait of Hormuz appear significantly higher than widely believed. The US Energy Secretary reported that nearly 9 million barrels per day crossed the strait last week, compared with the 4–5 million barrels per day commonly estimated by tanker-tracking firms. This suggests a large volume of covert tanker traffic that is bypassing conventional monitoring.

Even a conservative interpretation implies that at least 5 million barrels per day are still moving through Hormuz. If a single untracked supertanker (around 2 million barrels) transits daily, actual flows may reach 7 million barrels per day; two such vessels would push flows close to 9 million barrels. These hidden shipments help explain why prices remain below the psychological $90–$100 range despite what has been described as the largest supply disruption in modern oil-market history.

The International Energy Agency now projects a global crude shortfall of around 1.8 million barrels per day this quarter, more than double its earlier estimate, and sees the full-year 2026 deficit as the widest in five years. Demand, however, is being eroded by higher prices, tempering the impact of supply losses and preventing a further spike. Strategic reserve releases, bypass pipelines, weaker Chinese imports and still-elevated commercial inventories have all contributed to softening the blow from Persian Gulf outages.

Fundamentals & Inventories

Market transparency has deteriorated sharply. Many tankers have stopped transmitting AIS signals since the conflict escalated, while access to high-resolution satellite imagery has been restricted. Monitoring is now largely dependent on a pair of EU satellites that image key zones only every three to five days. Extensive ship-to-ship transfers further obscure the origin and destination of cargoes, allowing significant volumes to move effectively off-radar.

Against this opaque backdrop, US government data stand out as one of the few reliable signals. US commercial crude stocks swelled by about 17.4 million barrels last week, the largest build since January 2023, led by the Gulf Coast. The surge reflected weaker exports and stronger imports, including higher arrivals of Saudi and Venezuelan crude, as well as adjustments related to emergency releases and redirected flows. This build suggests that, at current prices, physical availability is improving in the Atlantic Basin even as the global balance remains in deficit.

On a global scale, recent IEA analysis indicates a cumulative crude and liquids deficit approaching 900 million barrels by September 2026, even after a 400 million barrel emergency stock release by IEA members. Replenishing both commercial and strategic inventories would require substantially higher supply growth in coming years, implying that any sustained loss of covert Hormuz flows could quickly tighten balances again.

Logistical Risks & Weather Context

While immediate price action is driven mainly by geopolitics and covert flows rather than weather, operational risks in the Gulf remain elevated. Tankers often transit Hormuz in heavily protected convoys, creating irregular shipment patterns and crowding narrow time windows of safe passage. Iranian attacks and expanding oil spills have increased the hazards of navigation, raising the probability of accidents, temporary closures or insurance-driven route changes.

Elsewhere, seasonal demand patterns are typical for August, with Northern Hemisphere summer driving already past its peak and refinery maintenance on the horizon for the autumn. No major weather disruptions are currently reported in key non-Gulf producing regions, so physical tightness remains primarily a function of conflict risks and policy decisions rather than storm-related outages in the near term.

Trading Outlook & 3-Day View

• Risk managers / consumers: Sub-$90 (≈€83) Brent offers an opportunity to extend short-term hedges, given that covert flows and reserve releases are masking a historically large underlying deficit.
• Producers: Maintain disciplined selling; consider layering in hedges on rallies toward €88–€92, as the combination of demand destruction and hidden Hormuz volumes caps upside in the near term.
• Speculators: Volatility is likely to stay high; tactical range trading between roughly €78 and €88 in front-month Brent appears justified while the strait remains partially open but diplomatically unresolved.

For the next three trading days, Brent is likely to trade sideways with a modest downside bias toward the low-€80s if additional evidence of strong Gulf exports and high US inventories persists. Conversely, any credible sign of reduced covert flows, new attacks in Hormuz, or stalled emergency stock releases could quickly push prices back toward the mid-€80s to high-€80s in EUR terms.