Brent
Global oil price benchmark; rose 40% above pre-war baseline after Hormuz blockade.
Last refreshed: 21 April 2026
Why did Brent crude swing 9% down and 7% up in a single weekend during the Iran conflict?
Timeline for Brent
Mentioned in: Hormuz at sixteen ships; blackout sets record
Iran Conflict 2026- Why is Brent crude so high in 2026?
- The US naval blockade of the Strait of Hormuz has reduced transit traffic to 88% below the pre-war baseline, keeping Brent roughly 40% above its pre-war level of $67.41/barrel.Source: Lowdown / Kpler
Background
Brent Crude is the primary global oil price benchmark, derived from North Sea crude and used to price roughly two-thirds of the world's internationally traded oil. It is published in US dollars per barrel and is the reference price for most crude contracts, shipping rates, and energy company revenues.
Since the 2026 Iran conflict began and the US naval blockade reduced Hormuz traffic to around 16 vessels per day — 88% below the pre-war baseline of 135 — Brent has been trading roughly 40% above its pre-war level of $67.41. The sharpest single-day round-trip of the war occurred on 18-20 April: Brent dropped 9% on Friday 18 April after Iran's Foreign Minister Araghchi announced a civilian transit corridor, then rebounded 7% to $96.88 on Monday 20 April after the IRGC seized the Sanmar Herald and the Touska seizure confirmed the corridor was void.
Brent's wartime behaviour reflects markets pricing the gap between diplomatic signals and IRGC operational decisions. Each time civilian and IRGC authorities diverge on Hormuz access, Brent moves sharply. Oxford Economics projects world GDP growth at 1.4% in 2026 under prolonged conflict, compared with a 2.6% baseline, with elevated Brent as the primary transmission mechanism.
