Le boom des investissements dans la tech de défense déclenche une alerte à la bulle alors que le capital-investissement s'en mêle

Private equity deployment into the defense technology sector has accelerated significantly as geopolitical tensions and military modernization drive demand for advanced capabilities. In the first nine months of 2026 alone, total investments reached $4 billion, representing an eightfold increase compared to the full-year figures recorded in 2024. This massive capital injection has propelled early-stage startups and growth-stage defense contractors into sky-high valuations, often outpacing fundamental revenue growth. Market veterans are increasingly warning that speculative fervor could lead to a painful correction if defense spending slows or regulatory hurdles delay procurement. Despite the risks, institutional investors continue to chase yields in national security tech, viewing it as a resilient asset class. The trend reflects a broader shift where venture capital and private equity firms actively pivot toward dual-use technologies, autonomous systems, and cybersecurity. However, the disconnect between public defense budgets and private valuations remains a critical vulnerability for investors positioned in this niche.