KEY POINTS
- The Global X Defense Technology ETF (SHLD) gathered over $1 billion in January alone and has returned more than 70% over the past year, as thematic ETF flows pivot from AI to defense amid escalating geopolitical tensions.
- The Rex Drones ETF (DRNZ) has gained 15.1% year-to-date with assets climbing to $86.6 million, offering differentiated exposure to drone technology companies outside the traditional aerospace and defense complex.
- Traders should watch whether the Iran strikes accelerate the defense rotation — a second consecutive month of $1 billion-plus inflows to SHLD would confirm defense as the dominant thematic trade of 2026.
The trade that defined 2025's thematic ETF market — pile into anything labeled AI — is giving way to a harder-edged successor. Defense and drone ETFs are pulling capital from artificial intelligence funds at a rate that signals a durable rotation, not a temporary blip, as escalating geopolitical tensions reshape how investors express thematic views.
The Global X Defense Technology ETF (SHLD) gathered more than $1 billion in January and has delivered total returns exceeding 70% over the past twelve months. The fund, which held $3.6 billion after a massive 2025, has become the go-to vehicle for investors seeking exposure to NATO rearmament, U.S. defense budget expansion, and the broader shift toward wartime industrial capacity that has accelerated in 2026.
Wednesday's U.S. strikes on Iran poured fuel on an already-hot trade. Defense stocks rallied sharply in after-hours trading, with Lockheed Martin, RTX, and Northrop Grumman all posting gains while the broader market sold off. For SHLD holders, the geopolitical escalation is a direct catalyst — the fund's top holdings map precisely to the companies that benefit from increased defense spending and military procurement.
Drones Take Flight
While SHLD captures the traditional defense establishment, the Rex Drones ETF (DRNZ) is carving out a distinct niche. Launched in October 2025, DRNZ has returned 15.1% year-to-date and grown its asset base to $86.6 million — a rapid trajectory for a thematic ETF in its first year.
DRNZ strips away traditional aerospace and defense exposure to focus exclusively on drone technology companies — manufacturers, sensor providers, and software platforms. The thesis is straightforward: modern warfare is increasingly fought with autonomous systems, and the companies building those systems represent a higher-growth, higher-margin opportunity than legacy prime contractors.
The performance data supports the distinction. DRNZ has outperformed SHLD on a year-to-date basis, driven by three key holdings that have reported strong earnings tied to military drone contracts and commercial delivery applications. The fund's 0.65% expense ratio is slightly higher than SHLD's, but investors are paying for differentiated exposure that does not overlap meaningfully with broad defense indices.
The AI-to-Defense Rotation
The shift from AI to defense in thematic ETF flows is not happening because AI is broken — it is happening because defense has become more urgent. After three years of outflows, thematic ETFs bounced back with $23 billion in inflows, and while more than two-thirds of that initial wave went to robotics and AI products, the momentum has shifted.
European thematic flow data from the week of May 21-25 illustrates the trend. China Disruptive Technology ETFs gathered 160.2 million euros in inflows, reflecting the AI hardware trade. But Space and Deep Sea strategies pulled in 112.5 million euros, and Global Infrastructure attracted 89 million euros — categories that overlap significantly with defense and geopolitical resilience themes.
The broader context is that thematic ETF investors are becoming more pragmatic. The AI trade in 2025 was driven by aspiration — the belief that generative AI would transform every industry. The defense trade in 2026 is driven by necessity — the recognition that geopolitical instability is structural, defense budgets are expanding globally, and the companies that build military hardware have earnings visibility that most AI plays lack.
Sizing the Opportunity
The global defense market is expected to exceed $2.5 trillion in annual spending by 2027, driven by NATO's commitment to 2.5% GDP targets, Japan's doubling of its defense budget, and Middle Eastern procurement cycles. For ETF investors, that spending translates directly into revenue growth for the companies held by SHLD and DRNZ.
The risk is that geopolitical tensions de-escalate faster than expected, removing the urgency that has driven flows. A ceasefire in Ukraine, a diplomatic resolution with Iran, or a significant reduction in U.S. defense appropriations would all challenge the defense ETF thesis. But even in an optimistic diplomatic scenario, the structural increase in global defense spending that began in 2022 is unlikely to reverse — governments that have committed to rearmament do not typically pull back within a single budget cycle.
For traders looking to express a view on the current environment, SHLD offers liquid, diversified exposure to the large-cap defense establishment, while DRNZ provides concentrated exposure to the autonomous systems segment that represents defense's growth frontier. Both funds benefit from Wednesday's escalation, but their long-term trajectories depend on whether 2026 marks the beginning of a sustained defense spending supercycle — or its peak.
