Oil Just Had Its Biggest Weekly Gain Since April

Brent crude jumped 3% on Monday, crossing $90 a barrel for the first time since June 11. This isn't an isolated spike; it's the continuation of a genuinely brutal run. Brent gained 15.9% last week alone, its biggest weekly gain since April. WTI wasn't far behind, up 15.5% for the week, its largest weekly move since early March.

These are the kind of numbers that show up when a regional conflict stops being contained and starts actively choking off one of the world's most important oil transit routes.

The numbers, specifically

Brent crude futures climbed $2.69, or 3.05%, to $90.79 by 2343 GMT, the highest level since June 11. US West Texas Intermediate crude sat at $84.68 a barrel, up $2.19, or 2.65%, its loftiest price since June 12.

Two consecutive weeks of double-digit percentage gains in oil is not normal market behavior. It's the market pricing in genuine, serious disruption risk to the global oil supply.

Dual blockades, not just conflict

The escalation over the weekend was significant even by the standards of what's already been a nine-day-and-counting exchange of strikes. The US conducted a ninth consecutive night of attacks against Iran, while US allies Kuwait and Bahrain both reported additional Iranian strikes hitting their territory, confirming this conflict has genuinely spread well beyond just the two primary combatants.

But the part that's actually moving oil markets specifically is what's happening to shipping. Both sides have started directly targeting maritime traffic. The US says it's now enforcing a naval blockade on Iranian ports. Iran, in turn, says it's targeting vessels that violate its rules for navigating the Strait of Hormuz, the waterway that normally handles roughly one-fifth of all global oil trade.

That's effectively two separate blockades operating simultaneously in the same critical chokepoint, from opposing sides of the same war.

A ship is now literally burning in the Strait

This isn't abstract risk anymore. The UK Maritime Trade Operations agency reported early Monday that a vessel was on fire northwest of Oman's Kumzar right in the immediate vicinity of the Strait of Hormuz.

That's the kind of real-world incident that turns theoretical shipping risk into something insurers, shippers, and oil traders have to price immediately and concretely, rather than as a hypothetical scenario.

The traffic numbers tell the real story.

Here's the clearest evidence of how badly this is disrupting actual oil flows: only four vessels made the transit through the Strait of Hormuz on Sunday, down from eight the previous day, according to LSEG data. That's already a dramatic collapse from the more than 130 ships per day that typically moved through the strait before this conflict began a number we've referenced in earlier coverage of the broader auto and chemical supply chain disruptions tied to this same war.

There is still some oil movement happening. At least three oil product tankers and one Very Large Crude Carrier have entered the strait since Friday specifically to load oil, per the data. So the strait hasn't been completely sealed off. But traffic volumes are a small fraction of normal, and shrinking further day over day.

Why analysts think the market still isn't taking this seriously enough

Barclays analyst Amarpreet Singh offered a genuinely notable warning in a client note: "The coming days and weeks will provide a clearer picture of the sustainable level of oil exports from the region under renewed dual blockades." His more pointed observation, though, was this: "As things stand, we think oil markets are still too complacent about the potential fallout for inventories, which, unlike at the beginning of the war, are at the tightest of the past five years."

That's an important distinction. When this conflict first began back in late February, global oil inventories had more cushion meaning even a serious supply disruption could be partially absorbed without prices spiraling. Singh's point is that cushion has largely eroded now. Inventories are at their tightest level in five years, which means the market has much less slack to absorb a sustained supply shock than it did when this war started. If Hormuz traffic keeps falling toward these levels or drops further there's less buffer standing between reduced exports and genuinely painful price spikes.

This ties together several threads we've covered closely. The auto industry has already been warning about material shortages tied to the Hormuz disruption BASF specifically flagged risks to sulfur, helium, and other critical automotive chemical inputs sourced through that route. Now, with oil prices themselves surging and shipping traffic collapsing further, that pressure is intensifying rather than easing.

It's also directly reshaping monetary policy on the other side of the world as we just covered, this same oil price spike is complicating rate decisions for both the Reserve Bank of New Zealand and the Reserve Bank of Australia, since higher fuel costs feed straight into inflation data central banks have to respond to.

And closer to home, energy stocks on Bursa Malaysia are already climbing in direct response to these Middle East tensions pushing oil prices higher a reminder that this conflict's financial ripple effects are now genuinely global, touching everything from Malaysian equities to Antipodean interest rate decisions to European auto manufacturing costs.

Oil just posted its biggest weekly gain since April, Brent's back above $90 for the first time in over a month, and there's now a burning vessel in the Strait of Hormuz as tangible evidence of how real the shipping disruption has become. Traffic through one of the world's most critical oil chokepoints has collapsed to a handful of vessels per day, down from well over a hundred before this conflict began.

With global oil inventories at their tightest point in five years, analysts are warning the market may still be underpricing just how serious this could get if the dual blockades continue, or worsen, in the days ahead. Whatever happens next in this conflict, it's no longer just a Middle East story; it's already reshaping interest rate decisions, auto supply chains, and equity markets on multiple continents simultaneously.