6 Best Defense ETFs for 2026 and How to Invest

The defense contracting market is being shaped by a diverse range of exchange-traded funds that balance traditional aerospace with emerging cybersecurity needs. As of mid-2026, investors are increasingly distinguishing between funds with heavy commercial aviation exposure and those focused strictly on military security. This strategic selection process is vital for stakeholders looking to align their portfolios with government spending priorities and the evolving technological requirements of national defense.

The Motley Fool’s 2026 analysis of the defense sector identifies a selection of six top-performing exchange-traded funds (ETFs) designed to capture growth in military and aerospace markets. A key distinction made in the report is the overlap between defense and commercial aerospace, which often complicates pure-play investment strategies. For those specifically targeting military security and cybersecurity, the Kensho Future Security ETF is recommended as a specialized vehicle that avoids the commercial heavy-weighting found in more traditional aerospace funds.

When comparing major market options, the report contrasts the iShares and Invesco aerospace and defense ETFs, noting that they serve different investor priorities. The iShares fund is recognized for its lower expense ratio, making it a cost-effective choice, yet its two largest holdings are significantly tied to the commercial aerospace sector rather than defense contracting. Consequently, the Invesco ETF is presented as a more suitable option for investors who want their capital more directly exposed to companies primarily focused on defense and military procurement.

Authored by contributing analyst Lou Whiteman, the report underscores the importance of understanding fund composition in the context of the 2026 defense landscape. The analysis suggests that while broad ETFs provide stability, the nuances of their underlying holdings—such as the balance between commercial aviation and government defense contracts—are critical for accurate sector exposure. As defense contractors continue to integrate advanced technologies, these ETFs provide a mechanism for tracking the financial health and market sentiment of the industry's largest players and emerging security firms.