U.S. startup funding rounds favor defense tech, AI infrastructure

U.S. startup funding rounds favor defense tech, AI infrastructure
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Ciaran Ryan
20 hours ago
U.S. startup funding rounds favor defense tech, AI infrastructure
AI and defense funding surge
Venture funding activity remains concentrated in sectors tied to artificial intelligence, defense and core computing infrastructure during the Aug. 15-21 period. Castelion tops the week's announced U.S. startup rounds with $800 million in equity and $250 million in debt, while several other companies secure financings at multibillion-dollar valuations.
Highlights
Castelion secures $800 million Series C equity and $250 million debt for its hypersonic missile program, reaching a $13 billion valuation led by JPMorgan Chase, Andreessen Horowitz, and Carlyle.
Etched closes a $700 million round led by Jane Street, valuing the AI inference cluster developer at $21 billion, while Higgsfield and Groq raise $400 million and $350 million, respectively.
Investor interest concentrates on AI infrastructure and defense tech, with significant funding for capital-intensive sectors like data center operations, compute acceleration, aerospace, and enterprise automation.
Largest rounds across defense and AI segments
As reported by
Crunchbase News
, the week's biggest announced startup financings among U.S.-based companies are led by Castelion, which raises a Series C package of $800 million in equity and $250 million in debt for its hypersonic strike missile program. JPMorgan Chase, Andreessen Horowitz and Carlyle lead the equity portion, giving the Torrance, California-based defense tech company a $13 billion valuation.
Etched follows with a $700 million round led by Jane Street, valuing the San Jose, California-based AI inference cluster developer at $21 billion. Higgsfield secures $400 million in Series B funding at a $5.4 billion valuation for its AI vi