If the Strait of Hormuz Stays Closed: Where Portfolios Break — and Where They Don't

Hi {{first_name|Investor}}

I want to talk about the thing most investors are ignoring right now — and why the silence should concern you more than the headlines.

The Strait of Hormuz has been largely shut down for Western commercial shipping since early March. The volume of energy, raw materials, and specialty gases that used to move through that corridor is staggering — and all of it is now shut off.

And yet: U.S. equity markets have barely flinched. Brent is elevated but not panic-level. The S&P is holding. If you're sitting in a tech-heavy U.S. portfolio, it probably feels like someone else's problem.

It might not stay that way.

Oil shocks have a pattern. They look benign early. Markets price in a quick resolution, futures curve stays in backwardation (where prices today are higher than prices for future delivery — the market's way of saying "this is temporary"), and the macro narrative stays "contained." Then input costs start showing up in earnings. Then credit tightens. Then the second-order effects land — and by then, the damage is already in the numbers.

I'm walking through where the real risk sits in a modern, AI-heavy portfolio — because this situation isn't an "oil trade." It's a map of landmines hiding in sectors that don't look energy-exposed until you trace the supply chains.

Here's the baseline. Before the closure, the Strait of Hormuz handled:

Even though one of the major arteries of the global economy is effectively shut down, markets are still calm. Why? Because futures are pricing in a resolution.

Physical North Sea barrels (Dated Brent) have recently traded more than $25 per barrel above the front-month futures contract — and in early April, that premium briefly exceeded $30. That kind of spread between spot and futures tells you the market sees extreme short-term tightness but still expects normalization. If you're building a portfolio around the futures curve being right, you're making a bet — and the history of oil shock resolutions should give you pause.

ECB officials have warned that a prolonged closure materially raises recession risks in energy-intensive economies like Germany and Italy. Several forecasters estimate that global trade growth could fall from the mid-single digits to roughly 1-3% if disruptions persist. Large asset managers like PIMCO have echoed the concern: recession risks are rising, and economic costs compound the longer this drags on.

I'm not here to predict whether the strait reopens next month or stays closed through 2027. I'm here to help you identify which parts of your portfolio are quietly leveraged to that outcome — and what to do about it.

The transmission mechanism is straightforward, and it follows the same playbook every time: supply disruption drives up crude and LNG prices, which raises shipping costs and insurance premiums, which inflates input costs across manufacturing and logistics, which compresses margins, which eventually tightens credit.

What makes this one different is the breadth of the disruption. Previous oil shocks — the Gulf War, the 2019 Abqaiq drone strike — affected crude supply in isolation. Hormuz affects crude, LNG, petrochemicals, fertilizers, specialty gases, and metals simultaneously. A large share of global polyethylene and methanol exports also moves through Hormuz. Chemical surcharges are already up 30% in some segments.

And the timeline matters. Energy price surges take four to six months to fully reprice into industrial electricity and wholesale power markets — which means the earnings impact on energy-intensive Asian manufacturing is still ahead of us, not behind us.

Airlines are getting hit from multiple directions. Middle Eastern airspace closures have rerouted major corridors between Asia and Europe, adding fuel burn and time. Jet fuel prices have surged, and long-haul Asia-Europe fares have risen noticeably as airlines pass through higher costs. If you own airline exposure — directly or through industrials ETFs — this is where the margin compression shows up first.

Autos and chemicals face a feedstock problem. Gulf smelters produce meaningful volumes of Europe's aluminum imports, and those smelters can't easily import alumina or export finished metal through a closed strait. Key petrochemicals like polypropylene and methanol have seen sharp single-day price spikes in Asia as supply routes through Hormuz seized up.

Upstream and midstream energy are the mirror image. Higher oil prices, tighter supply, and longer shipping routes (tankers rerouting around the Cape of Good Hope) all translate to higher revenue and utilization. If you hold domestic midstream names — pipelines, processing, storage — those positions are acting as a structural hedge right now.

And don’t get me started on the current state of trading relationships between the US and other countries. 🤦🏻‍♀️

That's the 10,000-foot view. For our premium subscribers, let's walk through how this actually hits the modern AI-heavy portfolio — and where I'm not willing to add exposure right now.