Skip to content
Welcome, thoughtbot's Giant Robots listeners!Start here
Autonomous Systems: Land & Sea
13JUN

Brent tops $100 then gives it back

3 min read
11:07UTC

Brent crude settled at $94.98 on 1 June, spiked to $101.36 on the morning of 3 June, then fell to $96.97 by 4 June, a round-trip that priced neither a signed deal nor a full blow-up.

TechnologyDeveloping
Key takeaway

Brent swung above $100 and back inside a day; insurers will not move Hormuz war-risk without an official document.

Brent Crude, the benchmark that prices roughly two-thirds of internationally traded oil, settled at $94.98 on 1 June, spiked to $101.36 on the morning of 3 June, then fell to $96.97 by 4 June⁠1. The 3 June print was the first move back above $100 since 25 May.

The round-trip says traders are pricing neither a signed deal nor a full blow-up. The market has settled into a $95 to $102 band that holds the conflict premium without betting on its resolution. Each fresh headline, a presidential phone call or a Senate hearing, moves the price for a session before it retraces, because nothing has changed the underlying supply risk through the strait of Hormuz.

Lloyd's of London shows why. The insurance market's Joint War Committee designates high-risk maritime zones, and to de-list Hormuz it requires a UN Security Council resolution or a government certification letter, not testimony or optimism. It has not repriced its Hormuz war-risk cover at all. Until an actual instrument lands, the insurers hold the premium steady while the futures market swings around it.

Deep Analysis

In plain English

Brent Crude jumped from about $95 to over $101 a barrel on 3 June 2026, its highest since 25 May, after Iran struck a civilian airport and Gulf tension spiked. Within about 24 hours it fell back to just under $97, roughly where it had started. This kind of quick spike and retreat shows that oil traders are not betting on an all-out war or a complete deal: they are pricing a situation that keeps going at roughly the same level of tension without a major change either way. Meanwhile, the companies that actually insure ships to sail through the strait of Hormuz have not changed their prices at all ; they still charge roughly $10 to 14 million extra per voyage, and that price only changes when there is an official government or UN declaration, not when the news is bad.

First Reported In

Update #117 · Iran's drone finds Kuwait's arrivals hall

Fortune· 4 Jun 2026
Read original →
Causes and effects
This Event
Brent tops $100 then gives it back
Lloyd's of London needs official certification rather than headlines to reprice Hormuz war-risk cover, and it has not moved.
Different Perspectives
DNV and Fassmer
DNV and Fassmer
Signed a memorandum at SMM in Hamburg, announced on 10 September, to seek an approval in principle for autonomous naval vessels. DNV's Rasmus Stute said autonomy is "becoming one of the key pillars in defence".
Belgian Ministry of Defence
Belgian Ministry of Defence
Awarded Exail Robotics Belgium €9.87m on 14 September, without competition, for three TRIDENT systems carrying the K-STER C mine-disposal vehicle for Ukraine. It had tendered separately in July for twelve tethered ROVs, not yet bought.
IRGC Navy (Iran)
IRGC Navy (Iran)
IRGC spokesman Hossein Mohebbi said the IRGC Navy seized a US Kingfish mine-hunting vehicle in the Strait of Hormuz on 27 September, valuing it at several million dollars. US Central Command calls the claim "clearly desperate"; no verified imagery exists.
UK Defence Intelligence and Kraken
UK Defence Intelligence and Kraken
Defence Intelligence said the 12 September clash "almost certainly marks the first time" Russian and Ukrainian USVs engaged directly. Kraken meanwhile trialled an unarmed Saab radar picket boat on 5 and 6 October.
Ukrainian forces and ARX Robotics
Ukrainian forces and ARX Robotics
A Ukrainian Sargan-3000 destroyed a Russian robot boat on 12 September, and the first ARX GEREON ground robots reached Ukraine on 29 September. The Sargan-3000 carries a mounted gun.
Indian Register of Shipping
Indian Register of Shipping
Certified Accurate Industrial Controls' ISACA collision-avoidance software to IMO standards after five audited milestones and 2,500 hours of trials. The firm plans to use it converting six Indian Navy patrol boats.

Written with AI from Lowdown's published reporting. Not individually reviewed by an editor. Editorial standards.