Highlights

  • The S&P Aerospace & Defense Select Industry Index has climbed over 54% in the past year, significantly outperforming the S&P 500’s ~15% gain
  • A proposed $1.5 trillion US defense budget for FY2027 is driving sector re-rating and strengthening long-term revenue visibility for major contractors
  • Global rearmament trends and NATO’s push toward 5% GDP defense spending are expanding export opportunities for US defense companies

The US defense sector has emerged as one of the strongest-performing areas of the equity market heading into 2026. The S&P Aerospace & Defense Select Industry Index has surged more than 54% over the past year, sharply outperforming the S&P 500’s approximate 15% gain over the same period. The rally reflects a powerful shift in global defense priorities, driven by rising geopolitical tensions, military modernization programs, and an unprecedented expansion in US defense spending. Analysts increasingly describe the current cycle as a structural, long-term transformation rather than a short-lived spending spike.

A Transformational Macro Environment

The most influential catalyst underpinning defense stocks is the dramatic expansion in US fiscal commitments toward national security. President Donald Trump’s proposed $1.5 trillion defense budget for Fiscal Year 2027 represents nearly a 50% increase compared with 2026 levels. If implemented, the proposal would mark the largest defense spending framework in modern US history and significantly reshape contractor earnings visibility.

This shift is occurring alongside broader geopolitical changes. NATO allies are moving toward defense spending targets of approximately 5% of GDP, which is expected to generate substantial export demand for US defense equipment and services. The trend reflects a new global military doctrine emphasizing preparedness and deterrence amid ongoing conflicts in Ukraine and the Middle East, as well as rising tensions among major global powers.

Another key driver of sector growth is the urgent need to replenish depleted Western weapons inventories. Extended military support to allied nations has significantly reduced stockpiles of missiles, munitions, and defense systems. Governments are now issuing multi-year replenishment contracts, providing contractors with predictable revenue streams and long-term production commitments.

In addition, the renewed domestic missile defense initiative, commonly referred to as the “Golden Dome for America,” has channeled significant capital toward interceptor missile development and air defense systems. Meanwhile, regulatory pressure is encouraging defense contractors to prioritize capital expenditure over share buybacks, with industry-wide CapEx projected to rise more than 30% in 2026 as companies expand manufacturing capacity and rebuild supply chains.

The Industry’s Core Leaders

Among major defense contractors, Lockheed Martin Corporation (NYSE:LMT) continues to dominate as the world’s largest pure-play defense company. The firm reported a backlog of approximately $194 billion in early 2026, reflecting robust global demand. The F-35 fighter jet program remains Lockheed’s cornerstone revenue generator, with record deliveries of 191 aircraft in 2025 and expanding international orders from countries including Poland, Japan, and Finland. Lockheed has also strengthened its leadership in missile defense after securing a historic $9.8 billion contract for PAC-3 MSE interceptors.

RTX Corporation (NYSE:RTX), formerly Raytheon Technologies, has similarly benefited from rising demand for missile defense and aerospace technologies. The company’s Patriot missile system continues to serve as a critical air defense solution for the United States and allied nations. RTX has doubled production of AMRAAM missiles to approximately 1,200 units annually. Its diversified operations, combining defense systems with commercial aerospace through Pratt & Whitney, support a total backlog estimated at $251 billion and provide resilience against cyclical program risks.

Northrop Grumman Corporation (NYSE:NOC) is widely viewed as the premier contractor supporting the US nuclear triad modernization. The company’s B-21 Raider stealth bomber entered Low-Rate Initial Production during 2026, supported by an expected $4.5 billion acceleration agreement designed to speed up deployment. Northrop’s strong position in satellite infrastructure and command-and-control systems further enhances its long-term growth visibility, particularly as military operations increasingly depend on space-based technologies.

General Dynamics Corporation (NYSE:GD) remains a critical supplier across land and naval warfare systems. The company continues to experience strong demand for Virginia-class submarines as the US Navy expands its undersea fleet. Simultaneously, renewed interest in armored warfare across Europe has driven demand for upgraded Abrams battle tanks, particularly among NATO allies such as Poland and Romania.

The Boeing Company (NYSE:BA) represents a more complex but potentially high-upside defense opportunity. Although its commercial aviation division has faced production challenges, Boeing’s Defense, Space & Security segment has begun stabilizing. The company secured a major $8.6 billion contract to supply F-15 fighter jets to Israel and remains a leading participant in autonomous military aviation initiatives, including the Loyal Wingman program. Boeing’s defense backlog exceeding $60 billion positions it for recovery if operational execution improves.

Emerging Defense Technologies Reshaping the Sector

Technological transformation is redefining defense procurement and strategy in 2026. Artificial intelligence, autonomous systems, and advanced missile technologies are rapidly integrating with traditional defense platforms.

The Collaborative Combat Aircraft program represents one of the most closely watched initiatives. The project focuses on pairing semi-autonomous drones with crewed fighter aircraft such as the F-35, enhancing combat effectiveness while reducing pilot risk. Key participants include Anduril Industries (private company), Northrop Grumman Corporation (NYSE:NOC), and General Dynamics Corporation (NYSE:GD).

Hypersonic weapons development is also accelerating. The US Army’s Long Range Hypersonic Weapon program gained multi-year procurement authority under the FY26 National Defense Authorization Act, unlocking substantial funding flows. Contractors such as Lockheed Martin Corporation (NYSE:LMT) and Leidos Holdings, Inc. (NYSE:LDOS) are emerging as key beneficiaries of these advanced weapons programs.

Counter-unmanned aerial systems have become another rapidly expanding market. The proliferation of small drones on modern battlefields has increased demand for electronic warfare and interception technologies. AeroVironment, Inc. (NASDAQ:AVAV) has experienced significant growth as its loitering munitions, including Switchblade drones, become standard equipment for frontline forces. Meanwhile, L3Harris Technologies, Inc. (NYSE:LHX) continues to strengthen its position in secure communications and cyber resilience solutions, which are essential to supporting increasingly networked military operations.

Risks Facing the Defense Investment Cycle

Despite the sector’s strong outlook, several risks remain. Government oversight of capital allocation has intensified, with policymakers urging contractors to prioritize manufacturing capacity and supply chain investment rather than shareholder returns. Companies that fail to reinvest adequately may face contract penalties or reduced procurement opportunities.

Labor shortages represent another critical challenge. The defense industry continues to struggle with limited availability of skilled engineers, technicians, and advanced manufacturing specialists. Even with increased funding, workforce constraints could slow production expansion.

Supply chain vulnerability also remains a strategic concern. Dependence on global suppliers, combined with the risk of prolonged geopolitical conflict, increases exposure to production disruptions and component shortages.

Outlook

The US defense sector in 2026 reflects what many analysts describe as a “Great Realignment” in global security priorities. Investors are increasingly viewing defense companies not merely as military hardware producers but as providers of strategic national infrastructure. With record budget projections, growing international demand, and rapid technological innovation, major contractors such as Lockheed Martin Corporation (NYSE: LMT), RTX Corporation (NYSE: RTX), Northrop Grumman Corporation (NYSE: NOC), General Dynamics Corporation (NYSE: GD), and The Boeing Company (NYSE: BA), along with specialized defense technology firms like AeroVironment, Inc. (NASDAQ: AVAV) and L3Harris Technologies, Inc. (NYSE: LHX), appear positioned to benefit from a multi-year growth cycle.