US-Iran 2-Week Ceasefire and the 15% Oil Crash — What the Strait of Hormuz Reopening Changes

Oil crashed more than 15% in a single session, falling below $95 a barrel.

One post from President Trump on Truth Social Tuesday evening sent shockwaves through global energy markets. The US is agreeing to a 2-week ceasefire with Iran — on one condition: the complete, immediate, and safe reopening of the Strait of Hormuz. Iran's foreign minister confirmed acceptance. In one moment, the worst-case scenario that had weighed on markets for weeks took a sharp step back.

What Happened When the Strait Got Blocked

The Strait of Hormuz is a chokepoint carrying roughly 20% of the world's oil and a significant share of liquefied natural gas. When it got blocked, both crude and LNG supply took a simultaneous hit. The IEA assessed this disruption as worse than the 1973, 1979, and 2022 energy crises combined.

Energy prices spiked. Inflation fears surged back. Central banks found themselves cornered again. Most investors were bracing for another leg down.

The Numbers Behind the Reversal

Indicator	Move
Oil prices	Down 15%+, below $95/barrel
Dow futures	+1,000 points
S&P 500 futures	+2%+
Nasdaq 100 futures	~+3 to 3.2%

All of this happened before the agreement was even formally signed.

Trapped tankers can start moving again. Rerouted energy supplies can begin flowing back through normal channels. Lower energy costs translate directly into easing inflation pressure — good news for consumers, for businesses, and for overall market sentiment.

What Remains Unresolved

There's a reality check that optimism alone can't cover.

This is a 2-week ceasefire, not an official end to the conflict. Infrastructure damage is still out there. Energy prices remain well above pre-crisis levels. Sticky interest rates haven't gone anywhere. Inflation pressure and broader macroeconomic headwinds are still part of the picture.

The market cheering makes sense — this is a genuinely positive catalyst. But it doesn't magically fix everything overnight.

What to Watch Now

Sectors hit hardest by elevated fuel costs have the most room to bounce. Airlines, transportation, and consumer-facing businesses that were squeezed by energy costs are the first to get breathing room.

At the same time, whether this ceasefire gets extended beyond two weeks or tensions re-escalate will determine the market's next direction entirely. Right now, the worst immediate shock is fading. That's meaningful. But "the worst is fading" is not the same as "everything is fixed."

The bottom line: the relief rally has a real basis, but the moment that relief turns into complacency, it becomes a risk.