U.S. Strikes on Iran Rattle Markets — Where Smart Money Is Moving

If you woke up Monday morning wondering why your portfolio looks like it got hit by a truck, here’s the short version: the United States and Israel launched joint military strikes on Iran over the weekend, killing Supreme Leader Ayatollah Ali Khamenei and sending shockwaves through every asset class that matters.

Dow futures dropped over 500 points. The S&P 500 and Nasdaq slid more than 1%. Crude oil spiked 7% on fears that the world’s most critical oil chokepoint — the Strait of Hormuz — could become a flashpoint. Gold surged 3% as investors scrambled for shelter. The VIX, Wall Street’s so-called “fear gauge,” jumped to its highest level of 2026. In other words, the textbook geopolitical panic playbook is running exactly as designed.

But here’s what separates smart investors from the herd: panicking is easy. Knowing where the money is actually flowing is what counts.

Defense stocks lit up like a Christmas tree. Northrop Grumman and Lockheed Martin popped 5% in early trading. RTX — the company formerly known as Raytheon — jumped more than 6%. These aren’t speculative moonshots. These are companies with massive government backlogs that just got a very loud reminder of why they exist. When geopolitical risk spikes, defense spending doesn’t get cut — it accelerates.

Energy names followed. Exxon Mobil gained 4%, Chevron added 3%. Iran is OPEC’s fourth-largest producer, and even a temporary disruption to exports or Strait of Hormuz traffic could squeeze global supply at exactly the wrong time. Oil was already dealing with tight inventories. Now add a war in the Persian Gulf.

Meanwhile, everything else sold off. Tech stocks led the decline, with Broadcom, Amazon, and Alphabet all falling. Banks followed — Morgan Stanley and Goldman Sachs dropped as risk appetite evaporated. This is the classic risk-off rotation: out of growth and leverage, into hard assets and government contractors.

The big question now is whether this becomes a buyable dip or the start of something worse. History offers some guidance. Geopolitical shocks — even serious ones — tend to create short-lived market dislocations. The Gulf War selloff in 1990 lasted about three months before reversing. The post-9/11 selloff bottomed in five trading days. Even the Russia-Ukraine invasion shock in 2022 was mostly absorbed within weeks.

Barclays’ Ajay Rajadhyaksha put it bluntly in a note to clients: “The tail risk of a sustained conflict is higher than in 2024 or 2025,” but he cautioned that early this week “is too early to buy any dip, especially with investors used to a pattern of quick de-escalation.”

That’s the key variable. If the conflict stays contained — U.S. strikes achieve their objectives and Iran’s response is measured — this selloff becomes an opportunity. Historically, the S&P 500 has been higher 12 months after every major geopolitical shock of the last 30 years. But if fighting disrupts Hormuz traffic or Iran retaliates in a way that drags in other regional powers, the calculus changes entirely. A sustained oil supply disruption could reignite inflation, force the Fed to pause or reverse rate cuts, and knock the economic expansion off course.

For now, the playbook is clear: don’t panic-sell into a gap down, watch oil prices as the leading indicator of escalation risk, and keep an eye on defense and energy names that benefit regardless of how the conflict resolves. The market hates uncertainty — but uncertainty is where prepared investors make their money.