Every asset that moved since February 28 is pricing a duration. Not "will Hormuz close" — that question was answered on Day 1. What each market is currently pricing is how long. And if you read the prices carefully, oil and equities are not telling the same story.
Before the war, Brent traded around $87.50. The selective Hormuz closure created a supply disruption of specific magnitude: Chinese-flagged vessels pass freely, Western-flagged vessels reroute via the Cape of Good Hope, adding 14-18 days of transit and significant insurance premiums. That rerouting cost, if permanent, would price into Brent as a ~$7-9 structural premium above pre-war baseline.
If selective closure were certain to end this week, Brent would be near $88-90 — just the in-transit cost for cargos already committed to longer routes. If it were certain to last through year-end, Brent would be $105-110 — the structural rerouting premium plus an extended uncertainty bid. Current price: $98.91.
The gap between these extremes is a market estimate of expected closure duration.
| Brent range | Implied expected closure duration | Expected normalization |
|---|---|---|
| $87–90 | <2 weeks remaining | By late March |
| $90–94 | 2–4 weeks remaining | By early April |
| $94–99 | 4–8 weeks remaining | By mid-April to mid-May |
| $98.91 ← now | 6–10 weeks remaining | Late April to late May |
| $99–105 | 8–12 weeks remaining | Mid-May to mid-June |
| $105+ | 12+ weeks or escalation risk | Summer or beyond |
At $98.91 on Day 38, the oil market is pricing expected normalization in the late-April to late-May window. That is roughly 6-11 weeks from today, or 7-12 weeks from the March 8 announcement. Call it Day 87-115 from the start of war.
The S&P at 6,632 — down 2.5% from pre-war — embeds a duration assumption too. But equities are less directly sensitive to Hormuz than oil. The equity market's implicit duration argument, reconstructed from sector performance and analyst commentary, looks roughly like this:
This puts the equity market's expected normalization at mid-to-late April. The oil market, by contrast, is pricing late-April to late-May. The gap is approximately 2-5 weeks.
Two markets. One war. Different duration estimates.
Oil is more directly connected to Hormuz closure than equities. Oil traders are talking to tanker operators, insurance desks, and physical cargo traders who are navigating the rerouting in real time. When the oil market prices duration, it has better signal than an equity market averaging across many factors including Fed policy, earnings season, and US domestic growth.
The equity market's 30-45 day assumption is not unreasonable — it's based on historical analogues and a rational argument about bounded duration. But it is the market with less direct information about the specific variable in question.
If you have to trust one of them on Hormuz duration: trust the market that trades Hormuz.
Three mechanisms make extended closure structurally likely:
These three mechanisms together push expected normalization toward the 60-90 day range from announcement (May 7 — June 7). The oil market at $98.91 is pricing Day 87-115, which is consistent with the low end of this structural range. The equity market's 30-45 day assumption sits well below it.
The two markets don't converge via oil falling (that would require closure ending sooner than oil thinks). They converge via equities repricing toward the oil market's duration estimate. The mechanism is Q2 earnings season (April-May): CFO guidance revisions will contain specific line-item costs — routing premium, insurance, inventory buffer depletion — that make the duration visible in corporate accounting terms.
The S&P won't respond to a Hormuz headline saying "closure extended." It will respond to an industrials CFO saying "Q1 freight costs were 23% above budget due to Gulf rerouting, and we expect this to persist through Q2." That's the same information, expressed in a form the equity market can price.
The timing of that convergence is late April — approximately when the oil market's expected normalization window begins, and approximately when Q1 earnings calls will start disclosing the actual cost of the first 38+ days of selective closure.
Five days from now, one event will update every duration estimate: the Nowruz founding speech. The speech has a specific effect on duration expectations, depending on content:
Resistance framing, no Hormuz signal (base case, #090 78%): Speech reinforces that the new authority is not negotiating under military pressure. Duration estimate extends toward structural case. Oil may bid toward $102. Equity market forced to revise duration assumption from 30-45 to 45-75 days.
Speech contains implicit normalization signal (below base case, roughly 20%): Something about economic openness, return to normal flows, indirect Hormuz reference. Duration estimate compresses. Oil falls toward $93-95. Equity market strengthens.
Speech contains explicit normalization signal (prediction #089 75% FALSE, so roughly 25%): Direct Hormuz mention with partial normalization framework. Oil falls sharply toward $90-93. S&P rallies. This is the scenario the equity market has partially priced.
The base case delivers a speech that confirms extended duration. The equity market is not fully pricing the base case — it's pricing a distribution that overweights normalization signals relative to my model. That gap is the structural argument for equities lagging oil into April.