# Iran war sends US crude futures up 12% a barrel | Reuters

> US crude futures jumped about 12% a barrel after the Strait of Hormuz was effectively closed for seven days. Roughly 140 million barrels of oil that normally transit the waterway each day have been disrupted.

- Date: 2026-03-06 · published 2026-03-06T12:00:00.000Z
- Category: geopolitics · region Middle East · magnitude high
- Page: https://feedsoft.ai/events/5572-iran-war-sends-us-crude-futures-up-12-a-barrel-reuters
- Commodities: [Crude Oil (WTI)](https://feedsoft.ai/c/WTI.md), [Crude Oil (Brent)](https://feedsoft.ai/c/BRENT.md), [ULSD / Diesel](https://feedsoft.ai/c/DIESEL.md), [Natural Gas](https://feedsoft.ai/c/NATGAS.md), [Ocean Grain Freight](https://feedsoft.ai/c/OCEANFRT.md)

## Why it matters

Loss of Hormuz flows removes about a fifth of world oil supply, pushing crude and energy-linked input costs sharply higher. Higher diesel and fertilizer costs and freight rates raise the cost of feed production and shift demand toward substitutes.

## Read by commodity

- WTI: bullish ▲
- BRENT: bullish ▲
- DIESEL: bullish ▲
- NATGAS: bullish ▲
- OCEANFRT: bullish ▲

## Linked price moves

| Commodity | Date | Window | Change % | z-score | Why linked |
| --- | --- | --- | --- | --- | --- |
| BRENT | 2026-03-06 | 1 | +8.3% | 3.2 | Dated March 6, it reports a roughly 12% jump in US crude futures after Hormuz was effectively closed for seven days, a direct supply shock that Brent shared. |
| BRENT | 2026-03-06 | 5 | +34.2% | 7.0 | Effective seven-day Hormuz closure disrupting huge oil volumes pushed crude futures sharply higher on March 6. |
| WTI | 2026-03-09 | 5 | +33.1% | 6.2 | WTI surged about 12% in a day after Hormuz was effectively closed for a week, disrupting large crude flows. |
| BRENT | 2026-03-05 | 1 | +8.6% | 3.3 | Effective Hormuz closure for seven days disrupted flows and lifted crude futures sharply. |

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| WTI | 2026-08-31 | [Oil prices settle up more than $4 a barrel on renewed US-Iran fighting \| Reuters](https://feedsoft.ai/events/17635-oil-prices-settle-up-more-than-4-a-barrel-on-renewed-us-iran-fighting-reuters.md) | +9.6% | +4.0% |
| WTI | 2026-03-29 | [Brent eyes record monthly rise; US crude settles above $100 as Houthis join Iran war \| Reuters](https://feedsoft.ai/events/20326-brent-eyes-record-monthly-rise-us-crude-settles-above-100-as-houthis-join-iran.md) | +12.7% | -2.0% |
| WTI | 2026-03-07 | [US pump prices surge as Iran war upends global energy supply \| Reuters](https://feedsoft.ai/events/5531-us-pump-prices-surge-as-iran-war-upends-global-energy-supply-reuters.md) | +8.5% | +25.0% |
| WTI | 2026-03-08 | [Crude oil sells above $100 a barrel as Iran war impedes production \| AP News](https://feedsoft.ai/events/5230-crude-oil-sells-above-100-a-barrel-as-iran-war-impedes-production-ap-news.md) | +8.5% | +25.0% |
| WTI | 2025-06-13 | [Oil settles up 7% as Israel, Iran trade air strikes \| Reuters](https://feedsoft.ai/events/10991-oil-settles-up-7-as-israel-iran-trade-air-strikes-reuters.md) | +10.2% | +1.1% |
| BRENT | 2026-08-31 | [Oil prices settle up more than $4 a barrel on renewed US-Iran fighting \| Reuters](https://feedsoft.ai/events/17635-oil-prices-settle-up-more-than-4-a-barrel-on-renewed-us-iran-fighting-reuters.md) | +10.8% | +22.9% |
| BRENT | 2026-03-29 | [Brent eyes record monthly rise; US crude settles above $100 as Houthis join Iran war \| Reuters](https://feedsoft.ai/events/20326-brent-eyes-record-monthly-rise-us-crude-settles-above-100-as-houthis-join-iran.md) | +1.2% | -5.1% |
| BRENT | 2026-03-08 | [Crude oil sells above $100 a barrel as Iran war impedes production \| AP News](https://feedsoft.ai/events/5230-crude-oil-sells-above-100-a-barrel-as-iran-war-impedes-production-ap-news.md) | +9.5% | +25.6% |

## Sources

- reuters.com: https://www.reuters.com/business/energy/oil-falls-us-may-intervene-futures-market-issues-waiver-russian-purchases-2026-03-06/

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.