S&P 500 All-Time High: Wall Street Shrugs Off War and Hits Record Territory

War in the Middle East. Oil prices through the roof. A downgraded global growth forecast. And yet — the S&P 500 just hit an all-time high.

The index closed at 7,022 points on 16 April, up 0.8% and blowing past its previous January 2026 peak. The Nasdaq Composite wasn’t far behind, surging 1.6% to crack 24,000 for the first time ever. If you thought geopolitical chaos would tank stocks, Wall Street had other plans. Here’s what’s actually going on.

From Freefall to Fresh Highs: The S&P 500’s Wild Ride

Rewind to late March, and the picture looked grim. The S&P 500 had dropped 9% in a single month, rattled by escalating conflict in the Middle East and oil supply disruptions.

Then came the bounce. Since hitting its 30 March bottom, the index has ripped 11% higher — a textbook “wall of worry” rally. Markets, as they often do, started pricing in a resolution before one actually arrived. The Dow Jones, meanwhile, dipped 0.15% and remains below its own record. Blue-chip stocks haven’t caught the same wave — yet.

Oil Prices and the Strait of Hormuz Problem

Here’s the elephant in the room: energy costs. Brent crude is hovering around $96.50 a barrel, with WTI at roughly $92.50. Both sit well above pre-war levels.

The Strait of Hormuz — which handles around 20% of the world’s oil supply — has been severely disrupted since late February. The US blockade has been remarkably effective: ten vessels turned around and zero ships broke through.

That kind of squeeze would normally send markets into a tailspin. But investors seem to be betting the disruption is temporary, especially with ceasefire talks underway.

Ceasefire Hopes and the AI Spending Machine

Alan McIntosh of Quilter Cheviot Europe summed up the mood nicely: “Although the first round of talks led to no agreement, a likely extension of ceasefire gives optimism that an early resolution can be reached.”

Beyond geopolitics, there’s another engine powering this rally — artificial intelligence. McIntosh noted that “capital spending relating to AI shows no sign of slowing down.” Tech-heavy earnings are propping up the Nasdaq, and S&P 500 Q1 earnings are forecast to top $605 billion.

When big tech keeps spending and earnings keep climbing, it’s hard to keep investors away.

The IMF’s Warning and What History Says

Not everyone’s popping champagne. The IMF cut its 2026 global growth forecast to 3.1%, down from 3.3%, and projected headline inflation at 4.4% for the year. Slower growth plus stickier prices isn’t exactly the dream scenario.

Defence stocks, unsurprisingly, have been thriving — increased military budgets tend to do that.

And here’s a stat worth filing away: historically, equities have risen in the first year of US military conflicts around 60% of the time. Markets have a strange habit of climbing walls of worry, and this one’s no different so far.

Key Takeaways

The S&P 500 hitting an all-time high during an active conflict might feel counterintuitive, but markets are forward-looking machines. Right now, they’re pricing in ceasefire progress, robust AI-driven earnings, and a belief that oil disruptions won’t last forever.

That said, risks remain real. Inflation is sticky, growth is slowing, and the Strait of Hormuz situation could escalate. Stay diversified, keep an eye on energy costs, and don’t mistake a rally for an all-clear signal.

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FAQ

Q: Why did the S&P 500 hit an all-time high during the Iran war?

A: Markets are forward-looking and began pricing in a potential ceasefire before one was reached. Strong Q1 earnings forecasts and continued AI capital spending also fuelled the rally.

Q: How has the Strait of Hormuz disruption affected oil prices?

A: Brent crude is around $96.50 and WTI near $92.50 — both well above pre-war levels. The strait handles roughly 20% of global oil supply, and the US blockade has shut down traffic through it.

Q: Is the Nasdaq record high sustainable?

A: The Nasdaq’s surge past 24,000 is largely driven by big tech and AI spending. Sustainability depends on whether earnings continue to deliver and whether geopolitical risks ease in the coming weeks.

Q: What did the IMF say about global growth in 2026?

A: The IMF lowered its 2026 growth forecast to 3.1% from 3.3% and projected headline inflation at 4.4%. That signals a bumpier road ahead despite current stock market optimism.

Q: How do stocks typically perform during US military conflicts?

A: Historically, equities have risen in the first year of US conflicts around 60% of the time. It’s not a guarantee, but it does show markets often push higher even amid uncertainty.

Markets AI Spending All Time High Global Markets IMF International Monetary Fund Iran Ceasefire Iran War