When missiles start flying, the market usually hides under its desk. But if you’re looking at the aerospace and defense sector right now, it’s a completely different story. Global defense stocks didn’t just tick up after the U.S. and Israel launched major airstrikes against Iran this weekend—they absolutely took off. While the Nikkei 225 plummeted 1,500 points and tech giants like Nvidia took a beating, the companies that build the hardware for modern warfare are seeing green.
It’s not just a knee-jerk reaction to a news headline. This is a massive repricing of geopolitical risk that’s been building for months. With reports confirming the death of Iran's Supreme Leader and strikes hitting nuclear and missile facilities, we’re looking at a structural shift in how countries spend their money. If you’re trying to figure out if this is a short-term spike or a long-term trend, you have to look at the numbers.
The Immediate Surge in Defense Valuations
The market opened Monday with a clear message: the "peace dividend" is officially dead. The iShares U.S. Aerospace & Defense ETF has already climbed 14% since the start of 2026. If you go back to the first strikes on Iranian nuclear sites in June 2024, the surge is even more dramatic—up 35% in less than two years.
Specific players are leading the charge. Lockheed Martin (LMT) jumped 7% on Monday, while RTX (formerly Raytheon) and Northrop Grumman (NOC) weren't far behind, gaining around 6% and 5% respectively. Smaller, high-tech firms are seeing even more aggressive moves. Kratos Defense & Security Solutions (KTOS) surged over 10%, driven by the reality that low-cost drones and autonomous systems are doing the heavy lifting in this conflict.
It's a "risk-off" rotation for the general public, but for defense investors, it’s a "buy the escalation" moment. Gold is up, oil is flirting with $75, and the Strait of Hormuz is effectively a no-go zone for tankers. When the world feels this unstable, the companies that sell security become the ultimate safe haven.
Why This Isn't Just Another Temporary Spike
Critics often argue that defense stocks follow a predictable "impulse" pattern: conflict starts, price jumps, enthusiasm wanes, and then the stock drops when the headlines fade. But 2026 feels different. The current U.S.-Iran conflict is serving as a catalyst for a global arms race that was already simmering.
- The Shift to Subscription Defense: We’re moving away from the old model of selling a tank once and walking away. Companies like Lockheed Martin are pivoting to a "long-term service" model. By the end of 2025, Lockheed had a backlog of $194 billion. Much of that is for maintenance, software updates, and lifecycle support. It’s basically recurring revenue, much like a SaaS company, but with the Pentagon as the subscriber.
- The F-35 Factor: During the 2024-2025 period, some investors were worried that the military would dump expensive jets for cheap drones. The recent conflict proved that's not happening yet. The F-35 played a central role in the strikes against Iran's hardened targets, reminding the market that high-end manned aircraft are still the backbone of any serious strike force.
- European Rearmament: It isn't just about the U.S. anymore. NATO countries, especially in Europe, have been aggressively boosting their budgets. BAE Systems saw a 5.8% jump this morning because it provides the seekers for the THAAD missile defense system. When the U.S. uses its interceptors in the Middle East, those stockpiles have to be replenished immediately.
Identifying the Real Winners and Losers
If you’re looking at your portfolio, you need to distinguish between the companies benefiting from the "noise" and those with actual skin in the game.
The Heavyweights
Lockheed Martin, RTX, and General Dynamics are the obvious choices. They own the platforms. If the conflict drags on for the predicted four to five weeks, these are the firms that will see the biggest order book expansion. They are the "too big to fail" of the military-industrial world.
The Drone Disrupters
Don't ignore the tech-heavy firms. Companies like Palantir and Kratos are no longer "speculative" plays. They provide the AI and the autonomous hardware that makes modern surgical strikes possible. Kratos, in particular, has become a favorite for those looking for exposure to high-tempo drone warfare.
The Collateral Damage
While defense wins, travel and tech lose. Airlines like IAG and easyJet are getting hammered because airports in the Middle East are shutting down. Even the tech darlings aren't safe. Investors are rotating out of high-multiples like Nvidia and into "boring" defense and utility stocks. It's a classic flight to safety, but the "safety" is found in companies that make weapons.
How to Handle This Volatility
Don't go chasing a 10% jump on a Monday morning without a plan. Geopolitical trading is notoriously fickle. If a diplomatic miracle happens in Oman and a ceasefire is announced, these gains could evaporate in 48 hours. We saw this in late February 2026 when defense stocks dipped 4% just on the rumor of a nuclear deal.
However, if you're a long-term investor, the trend line is clear. Global military spending is on a path to $1.5 trillion by 2027. The U.S.-Iran conflict is just the latest chapter in a broader story of global instability.
Check your exposure to diversified ETFs like the Global X Defense Tech ETF (SHLD) if you don't want the risk of an individual company getting caught in a scandal or a failed test. SHLD gives you exposure to the big U.S. names plus European giants like Rheinmetall.
Audit your portfolio for airline and tech exposure that might be vulnerable to sustained high oil prices. If the Strait of Hormuz stays closed for more than a week, $100 oil is a real possibility, which will act as a massive tax on the rest of the economy. Your next step is to rebalance toward the sectors that benefit from a high-inflation, high-conflict environment before the rest of the market catches up.
