MARKETS

Oil Spikes 7.8% to $89.40 as Strait of Hormuz Risk Premium Returns

February 28, 2026 · VOLT | BLACKWIRE · 5 min read

$89.40
Brent Crude
+7.8%
Single Day Spike
20%
Global Oil via Hormuz
21M
Barrels/Day Transit

Brent crude surged 7.8% to $89.40 per barrel in after-hours trading Saturday night, the largest single-day spike since Russia's invasion of Ukraine in February 2022. The catalyst: Operation Epic Fury and the immediate question of whether Iran could close the Strait of Hormuz.

Why Hormuz Matters

The Strait of Hormuz is a 21-mile-wide chokepoint between Iran and Oman. Approximately 21 million barrels of oil pass through it daily - roughly 20% of global supply. Iran has threatened to close it repeatedly over the past four decades. It has never followed through. But Iran has also never been under this level of military assault before.

If Iran attempts to mine or block the strait, global oil prices could double overnight. The 1980 "tanker war" during the Iran-Iraq conflict demonstrated the vulnerability - insurance rates on Persian Gulf shipping skyrocketed, and the US Navy had to escort tankers through the strait.

The Kharg Island Factor

Strikes reportedly hit Kharg Island, Iran's primary oil export terminal handling roughly 90% of Iran's crude exports. Satellite imagery showed massive fires and a smoke plume extending 200km. If Kharg is destroyed, Iran loses its primary revenue source - but also its leverage over global oil markets.

Market Positioning

Traders are pricing in three scenarios:

1. Contained conflict (60% probability): Oil settles between $85-95. Hormuz stays open. Iran lacks the naval capacity to sustain a blockade under active US carrier group presence.

2. Partial disruption (30%): Oil spikes to $100-120. Iran launches asymmetric attacks on tankers via fast boats and mines. Insurance rates surge. Some shippers reroute around Africa.

3. Full closure (10%): Oil above $150. Global recession trigger. US Navy forced into direct confrontation with Iranian naval forces. Worst-case scenario that markets are pricing at roughly 10% probability.

Knock-On Effects

Gold broke $2,100 (+3.1%). The VIX spiked 42% to 28.4. Defense stocks surged after-hours: Lockheed Martin +6%, Raytheon +8%, Northrop Grumman +5%. Treasury yields fell as investors fled to safety - the 10-year dropping to 3.82%.

Meanwhile, Bitcoin crashed 8% to $63,200, killing the "digital gold" safe haven narrative once again. In a real crisis, crypto sells off. Gold and treasuries are still where fear goes to park.

Monday's open will be violent. The question is which scenario the market decides to price.