NASDAQ 100 futures drop over 1% as oil tankers attacked in Strait of Hormuz

Two oil tankers were attacked in the Strait of Hormuz, and within hours NASDAQ 100 futures had dropped more than 1%. For a market that had been relatively comfortable ignoring geopolitical noise for much of 2026, this was the kind of wake-up call that actually stings.

The strikes, attributed to Iran’s Islamic Revolutionary Guard Corps (IRGC), targeted commercial vessels transiting one of the most strategically vital waterways on the planet. About 20% of the world’s oil and LNG shipments pass through the Strait of Hormuz on any given day.

What happened in the Strait

The IRGC reportedly hit multiple commercial vessels, including a Qatari LNG tanker and a Saudi crude tanker. The maritime threat level in the area has been elevated to “severe.”

Daily transits through the Strait plummeted to single digits during the worst of the conflict, compared to a typical average of roughly 100 vessels per day.

Oil prices responded accordingly. Brent and WTI benchmarks surged between 3% and 9% in the wake of the attacks, with prices pushing toward the $90 to $100 per barrel range. Shipping companies have confirmed damage to multiple tankers, with further incidents reported on July 13, 2026.

War-risk insurance premiums for vessels transiting the region have spiked alongside the attacks, adding yet another cost layer that ultimately gets passed along to consumers.

Why equity markets are rattled

When oil prices spike, input costs rise for manufacturers, logistics companies, and basically anyone who needs to move things from one place to another. That feeds directly into inflation expectations. And inflation expectations are the one thing that can make the Federal Reserve reconsider its interest rate trajectory, which is something growth stocks care about deeply.

The bigger picture

The IRGC’s willingness to target vessels from major energy-exporting nations like Qatar and Saudi Arabia signals a higher tolerance for escalation than markets had been pricing in. Previous incidents in the region tended to involve warning shots or seizures. Direct strikes on laden tankers represent a meaningful step up the escalation ladder.

When daily transits drop from around 100 to single digits, oil that can’t move through the Strait has to be rerouted around the Cape of Good Hope, adding weeks to delivery times and significant costs to every barrel.

LNG shipments from Qatar, one of the world’s largest exporters, flow through the same chokepoint. Any sustained disruption there would tighten natural gas markets in Europe and Asia.

A prolonged disruption to Strait of Hormuz traffic would potentially push oil well above $100 per barrel and force central banks worldwide to confront a fresh inflationary impulse at a time when most had been hoping to ease monetary policy.

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