Like the previous one, this article comments on no current situation. It explains why a particular geography creates a particular category of risk, and what a household can do with that.
The Strait of Hormuz is a chokepoint: a narrow sea lane carrying a significant share of the world's traded oil and liquefied natural gas. What makes a chokepoint financially interesting is not the volume passing through it. It is the absence of a fast alternative.
What a chokepoint does that a merely busy route does not
A busy but bypassable route, if it closes, produces an extra cost: you go around, longer and dearer. A chokepoint with no short-term bypass produces something else — a discontinuity. The price does not rise in proportion to the inconvenience; it jumps, because part of the supply has no substitute available within the timeframe that matters.
That is why energy markets react to threats against a strait far more strongly than to disruptions of equivalent volume elsewhere. They are not pricing the disruption. They are pricing the convexity: the possibility that a small event produces a large effect.
Few short-term substitutes
Alternatives often exist - bypass pipelines, other producers - but their capacity takes months or years to mobilise, not days.
A premium, not a forecast
The price absorbs the probability of a blockage long before one happens, and deflates if it does not. That premium costs whoever buys after the announcement.
A cascade
Energy enters the cost of almost everything: transport, agriculture, industry. It is the only line item whose rise propagates across a whole basket.
The difference is not volume, it is substitutability within the timeframe that matters. That is what explains price reactions out of proportion to the event.
The three-step trap
The reasoning that comes naturally is: the strait is threatened, so energy will rise, so I should position myself. Each of the three steps is fragile, and the third particularly so.
"The strait is threatened" is public information. It is already in the price by the time you read it.
"So energy will rise" confuses a probability with a certainty. Geopolitical risk premiums deflate at least as often as they are realised, and the history of energy markets is full of tensions that never produced the feared shock.
"So I should position myself" is the most expensive link. Positioning after the announcement means buying the premium somebody else has already collected, and carrying its deflation if nothing happens. That is structurally the wrong side of the bet, and it has nothing to do with how clever you are: it follows from arriving late.
What makes energy special for a budget
One point deserves isolating, because it is true independently of any crisis: energy is the only spending category that enters the price of almost every other one.
A rise in the price of shoes affects people who buy shoes. A durable rise in energy affects the transport of everything, the production of everything, and everybody's heating. That is why it shows up in "core" inflation with a lag, and why a household heavily exposed to energy is exposed twice: directly through its bill, indirectly through the rest of its basket.
That double exposure is measurable. It requires knowing what you spend on energy, which is a budget line, not an opinion.
What stays true whatever the scenario
Three things, none of which depends on what happens next:
Your energy exposure is a number, not a feeling. Heating, fuel, electricity: their share of your spending determines what a shock actually costs you, and that share varies threefold between two households in the same country.
A reserve is sized on months of real spending. An energy shock is exactly the kind of event a reserve absorbs, and exactly the kind that makes it impossible to build one once it has started.
A decision taken during a crisis is taken on information everybody already has. That is why allocations are decided calmly, and reread, rather than changed at the pace of headlines.
This article recommends no investment, no sector and no instrument, and is not meant to. It offers one thing: that next time a strait leads the news, your first reaction is to open your own figures rather than a feed. Only one of the two belongs to you.