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For years, Silicon Valley told investors that software and artificial intelligence would reshape the global economy. Now, a new narrative is emerging in private markets: geopolitical instability itself may be becoming an investable growth sector.
The rapid rise of defense startups like Anduril Industries and Shield AI reflects more than enthusiasm for artificial intelligence or drones. Their soaring valuations come as countries ramp up military spending, tensions between the U.S. and China intensify, autonomous warfare becomes more common in conflicts like Ukraine and the Middle East, and investors increasingly see defense spending as a long-term growth trend rather than a cyclical government expense.
That raises an uncomfortable question few investors or founders openly discuss: How much of the modern defense-tech boom depends on persistent geopolitical fear?
The numbers are striking. According to data from S&P Global Market Intelligence, venture funding for defense-focused startups reached $29 billion in 2025, nearly triple the 2020 levels, while the number of venture transactions climbed from 414 in 2020 to 629 in 2024. The report noted the surge was due to "ongoing geopolitical volatility" and the war in Europe.
At the same time, global military expenditures hit $2.89 trillion in 2025, according to data cited by Reuters and the Stockholm International Peace Research Institute.
Investors appear to be treating that spending trajectory as durable. In March, Shield AI announced a $2 billion financing that valued the company at $12.7 billion, up sharply from a $5.3 billion valuation just a year earlier. The round included capital from Advent International, JPMorgan's Strategic Investment Group, and Blackstone-managed funds.
Reuters reported that the company's autonomous-flight software had become integrated into platforms including F-16 fighter jets and the U.S. Air Force's Collaborative Combat Aircraft program.
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Anduril's trajectory has been even more dramatic. The company roughly doubled its valuation to around $60 billion in 2026 while securing increasingly strategic Pentagon programs tied to autonomous systems, battlefield command software, and missile defense.