Defense Stocks in 2026: Why the Iran War Rally Faded and What Comes Next
Defense stocks 2026 surged on the Iran conflict but then pulled back. Here's why the rally faded, what structural tailwinds remain, and how to position now.
Defense stocks in 2026 have taken investors on a wild ride. Lockheed Martin surged nearly 40% year-to-date as tensions with Iran escalated, only for the NYSE Arca Defense Index to drop 8% in March — even as U.S. warplanes were still flying combat missions over Tehran. Then on April 7, a fragile two-week ceasefire sent the Dow soaring 1,300 points while defense names barely moved.
What’s going on? If wars are supposed to be good for weapons makers, why aren’t defense stocks cooperating? The answer reveals something important about how this sector actually works — and whether there’s still opportunity ahead.
The Iran War Rally: What Actually Happened to Defense Stocks
When the U.S. launched Operation Epic Fury against Iran in early 2026, defense stocks reacted exactly as you’d expect — at first. Northrop Grumman jumped 6%, RTX rose 4.7%, and Lockheed Martin gained 3.3% in the opening days of the conflict.
But compare that to February 2022, when Russia invaded Ukraine and the defense index surged 12% in a single month. The Iran war pop was notably smaller, and it didn’t stick.
By the end of March, the defense sector was underperforming the broader S&P 500. Earnings growth expectations for the “Big Five” — General Dynamics, Lockheed Martin, Northrop Grumman, L3Harris, and RTX — had actually declined from roughly 15% to 12% since the start of the year.
The reason? Wall Street had been pricing in geopolitical conflict for months before the first missile flew.
“A lot of conflict premium was in their valuations…when Trump was sending the armada to the Middle East. Nobody knew anything, but they saw chances of a conflict.” — David Bianco, DWS
In other words, by the time the war started, defense stocks had already run. The trade was crowded.
Why Wars Don’t Instantly Boost Defense Stocks
If you’re wondering what stocks made money during war, the answer is more complicated than “buy Lockheed Martin.” Here’s why the connection between conflict and stock performance is weaker than most investors assume.
Long Production Cycles Kill the Quick Trade
Defense contracts operate on multiyear timetables. When the Pentagon orders more THAAD interceptors — the missile defense system that’s been intercepting Iranian ballistic missiles — Lockheed Martin doesn’t ship them next quarter. In January, Lockheed signed a deal to quadruple THAAD production from 96 to 400 interceptors per year, but ramping a production line takes years, not weeks.
Each interceptor costs $12.77 million, so that contract represents significant future revenue. But “future” is the key word. The revenue recognition stretches across fiscal years, muting any immediate earnings impact.
Supply Chain Constraints Are Real
Pentagon officials have repeatedly pressured defense firms to prioritize production over shareholder returns. That’s a polite way of saying: the industry can’t build weapons fast enough to meet wartime demand, and Washington doesn’t want CEOs buying back stock when they should be expanding factory floors.
Valuations Were Already Stretched
The S&P 500 Aerospace & Defense sub-index trades at roughly 32 times forward earnings — compared to about 20 times for the broader S&P 500. The sector surged more than 150% between 2020 and 2025, driven by the Ukraine war, rising NATO spending, and escalating U.S.-China tensions.
As Douglas Harned at Bernstein put it: “Nothing that has happened so far suggests that a $1.5 trillion 2027 defense budget could be exceeded…one should not expect upside.”
The Structural Case: $1.5 Trillion and Rising
Here’s where the story gets more interesting for long-term investors. While the war trade may have fizzled, the structural spending trajectory is undeniable.
Defense Budgets Are Breaking Records
U.S. discretionary defense spending rose more than 17% in fiscal year 2026, hitting $1.05 trillion — the first time it crossed the trillion-dollar mark. And President Trump’s FY2027 budget proposal goes much further: $1.5 trillion in total defense resources, a 44% increase that would be the largest defense budget in American history.
That’s not a war premium. That’s a structural shift in how much America spends on its military, driven by competition with China, the lessons of Ukraine, and now the Iran campaign.
Backlogs Tell the Real Story
Forget quarterly earnings beats. The metric that matters most for defense stocks is the backlog — the total value of contracts already signed but not yet delivered.
| Company | Key Metric | Notable System |
|---|---|---|
| RTX | $268 billion backlog | Tomahawk, AMRAAM missiles |
| Lockheed Martin | 2.2x sales backlog ratio | F-35, THAAD interceptors |
| Northrop Grumman | $100B+ Air Force contract | B-21 bomber, autonomous surveillance |
| Boeing Defense | $7.2B Q1 defense revenue | F/A-18, F-15EX ($23B contract) |
RTX’s $268 billion backlog alone represents years of guaranteed revenue. The Tomahawk and AMRAAM missiles have been the “workhorses” of the Iran campaign, and restocking those arsenals will generate orders well beyond any ceasefire.
The Ceasefire Doesn’t Change the Math
On April 7, the U.S. and Iran agreed to a two-week ceasefire barely an hour before Trump’s deadline. Markets celebrated — the Dow had its best day since April 2025, oil plunged, and risk-on assets rallied globally.
But Defense Secretary Pete Hegseth made the Pentagon’s position clear: American forces would be “hanging around” the Middle East for the duration of the armistice. Iran’s own statement was even more telling — “This is not the end of the war.”
As Defense News reported, a ceasefire pauses combat operations. It does not cancel weapons contracts, reduce military readiness requirements, or shrink the defense budget. If anything, the need to restock depleted munitions creates a secondary wave of defense spending that outlasts the conflict itself.
What the Best Defense Stocks to Buy Look Like Now
So where does that leave investors looking at defense stocks in 2026? The sector sits at an awkward intersection of strong fundamentals and stretched valuations.
Individual Stocks vs. Defense ETFs
For most investors, the best investment during a war — or after one — isn’t picking individual defense contractors. It’s using sector ETFs that spread risk across the industry.
| ETF | Focus | 2025 Return |
|---|---|---|
| ITA | iShares U.S. Aerospace & Defense | Broad defense exposure |
| XAR | SPDR S&P Aerospace & Defense | Equal-weighted approach |
| DFEN | Direxion Daily Aerospace & Defense Bull 3X | Leveraged (high risk) |
| PPA | Invesco Aerospace & Defense | Includes suppliers |
| ARKX | ARK Space Exploration | Space/defense crossover, +27.3% in 2025 |
Defense stocks are generally best suited for income-oriented investors seeking consistent growth and rising dividends rather than explosive gains. The book-to-bill ratio and corporate backlogs are the critical metrics to watch — not headlines about the latest airstrike.
The Valuation Question
At 32 times forward earnings, you’re paying a premium for safety and predictability. Sameer Samana at Wells Fargo frames the dilemma clearly: “The conflict would need to last longer, or expand materially” for earnings estimates to move meaningfully higher.
That said, the $1.5 trillion FY2027 budget proposal hasn’t been fully priced in yet. If Congress passes anything close to that figure, it could provide the next leg up for defense sector earnings — regardless of what happens in Iran.
What to Stock Up on if the US Goes to War
The question many investors ask during conflict is what to stock up on — financially speaking. The historical playbook suggests:
- Defense contractors with large backlogs and munitions exposure (RTX, Lockheed Martin)
- Cybersecurity firms that benefit from increased digital warfare spending
- Energy companies when conflict disrupts supply routes like the Strait of Hormuz
- Treasury bonds as a safe haven during the initial uncertainty phase
But timing matters enormously. Buying defense stocks after a conflict starts usually means buying at inflated valuations, as the 2026 Iran war demonstrated.
Frequently Asked Questions
What are the best defense stocks to buy during a war?
The largest U.S. defense contractors — Lockheed Martin (LMT), RTX (RTX), Northrop Grumman (NOC), and General Dynamics (GD) — have historically outperformed during periods of military conflict. However, in 2026, much of the war premium was already priced in before the Iran conflict began. Defense ETFs like ITA or XAR offer diversified exposure without single-stock risk.
What is the best investment during a war?
It depends on the conflict’s scope. Defense stocks, energy companies, and Treasury bonds tend to benefit during wartime. But the 2026 Iran war showed that if markets have time to anticipate a conflict, the “buy the war” trade often disappoints. The best approach is focusing on structural spending trends rather than trying to time geopolitical events.
Do defense stocks go down after a ceasefire?
Not necessarily. The April 2026 ceasefire initially caused a broad market rally while defense stocks held relatively steady. Defense spending is driven by multiyear budgets and contracts, not day-to-day combat operations. Munitions restocking, readiness maintenance, and budget appropriations continue regardless of ceasefire status.
Which stocks are most affected by the war in the Middle East?
Beyond defense contractors, the Iran conflict significantly impacted oil and energy stocks (due to Strait of Hormuz disruption fears), airline stocks (higher fuel costs), and shipping companies. Defense stocks like RTX and Northrop Grumman saw the most direct benefit from weapons demand, while the broader market experienced volatility from inflation and supply chain concerns.
Is it too late to buy defense stocks in 2026?
At 32 times forward earnings, defense stocks are not cheap. But the proposed $1.5 trillion FY2027 defense budget and ongoing global security threats suggest the sector’s structural growth story remains intact. Dollar-cost averaging into a defense ETF may be more prudent than making a large lump-sum bet at current valuations.
Bottom Line: The 2026 Iran war proved that buying defense stocks on conflict headlines is a losing strategy — the smart money had already moved. But the real story isn’t the war. It’s the structural shift toward trillion-dollar defense budgets, massive contractor backlogs, and a world that keeps getting more dangerous. Defense stocks may not offer a quick trade, but for patient investors focused on the spending trajectory, the sector’s fundamentals remain compelling — even at premium valuations.
This article is for informational purposes only and does not constitute investment advice. Always do your own research before making financial decisions.
