Bloomberg · Crunchbase News
The Week’s 10 Biggest Funding Rounds: Largest Financings Went To Defense, Wearables, Energy And Security
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This is a weekly feature that runs down the week’s top 10 announced funding rounds in the U.S. Check out last week’s biggest funding deal roundup here.
Key facts
- AI, $250M, cybersecurity: Sarasota, Florida-based AI-enabled cybersecurity startup Tenex picked up $250 million in Series B funding led by Crosspoint Capital Partners
- Valar Atomics, $450M, nuclear energy: El Segundo, California-based nuclear energy startup Valar Atomics, raised fresh capital at a valuation of $2 billion, according to a Bloomberg article citing
- Ambrosia Biosciences, $100M, biotech: Boulder, Colorado-based Ambrosia Biosciences, a developer of next-generation oral therapeutics for obesity and related cardiometabolic diseases, picked up $100
- ScaleOps, $130M, cloud infrastructure: New York-based cloud and AI infrastructure startup ScaleOps landed $130 million in Series C funding
Summary
Want to keep track of the largest startup funding deals in 2025 with their curated list of $100 million-plus venture deals to U.S.-based companies? Startup investors kept up the busy dealmaking pace this week with several big rounds. Saronic, $1.75B, autonomous ships: Austin-based Saronic, a defense tech startup focused on autonomous sea vessels, raised $1.75 billion in Series D funding, bringing total funding to around $2.6 billion. Whoop, $575M, fitness wearables: Whoop, a provider of wearable fitness technology and a subscription platform that tracks physiological data, secured $575 million in Series G funding.