The Week’s 10 Biggest Funding Rounds: Anthropic Dominates In An Otherwise Slower Week For Megarounds

Want to keep track of the largest startup funding deals in 2026 with our curated list of $100 million-plus venture deals to U.S.-based companies? Check out The Crunchbase Megadeals Board . 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 . Venture funding has always been a world of haves and have nots. And these days, the haves are having more than ever. Case in point this week was Anthropic . The 5-year-old generative AI giant secured $65 billion in Series H funding this week, pushing its post-money valuation to a mind-blowing $965 billion. After that, the next-biggest financing was a $1 billion round for AI software development tool maker Cognition , lifting its valuation to $26 billion. Companies in a range of other sectors also managed to secure sizable though smaller rounds, in areas including commerce logistics, developer AI, insurtech, fusion and more. 1. Anthropic , $65B, foundational AI: Generative AI company Anthropic raised $65 billion in a Series H funding round, more than doubling its post-money valuation to a staggering $965 billion. San Francisco-based Anthropic said Altimeter Capital , Dragoneer , Greenoaks and Sequoia Capital led the financing, and that Capital Group , Coatue , D1 Capital Partners , GIC , Iconiq Capital and XN co-led the investment. 2. Cognition , $1B, AI software development: Cognition, developer of AI software engineer Devin, has closed on over $1 billion at a $26 billion valuation. Lux Capital , General Catalyst , and 8VC 1 led the financing for the San Francisco-based company. 3. Stord , $250M, logistics: Atlanta-based Stord, developer of a fulfillment network, software and AI tools for independent brands, secured $250 million in Series F funding. The round set a $3 billion valuation for the 11-year-old company. 4. OpenRouter , $113M, AI for developers: OpenRouter, a marketplace for AI models, secured $113 million in Series B funding. CapitalG led the financing for the New York-based startup. 5. Corgi Insurance , $106M, insurtech: San Francisco-based Corgi Insurance, developer of an AI-native insurance platform for startups, picked up $106 million in Series B1 funding led by TCV . The financing, which set a $2.6 billion valuation, comes just three weeks after Corgi announced $160 million in Series B funding at a $1.3 billion valuation. 6. (tied) Thea Energy , $100M, fusion energy: Kearny, New Jersey-based Thea Energy, a developer of technology for fusion energy systems, raised $100 million in Series B funding led by US Innovative Technology Fund . Thea says the funding will go toward manufacturing infrastructure. 6. (tied) Garner Health , $100M, healthcare data: Garner Health, a platform for finding healthcare providers, closed on $100 million in Series E funding led by Index Ventures . The financing set a $2.74 billion for the New York-based company. 8. Observable Space , $90M, space tech: Observable Space, a space tech startup that develops and builds advanced optical systems, says it raised $90 million in Series A funding led by Lux Capital to scale manufacturing and develop its technology. The Santa Monica, California-based company also announced that it secured a $94 million contract with the U.S. Space Force . 9. Reactor , $59M, AI video: Reactor, a San Francisco-based developer platform for real-time generative video, emerged from stealth with $59 million in funding led by Lightspeed Venture Partners . 10. ClearNote Health , $52M, cancer detection: San Diego-based ClearNote Health, a developer of early detection and monitoring tests for multiple forms of cancer, picked up $52 million in Series D financing. Founding investor Mattias Westman led the round. Methodology We tracked the largest announced rounds in the Crunchbase database that were raised by U.S.-based companies for the period of May 23-29. Although most announced rounds are represented in the database, there could be a small time lag as some rounds are reported late in the week. Illustration: Dom Guzman 8VC is an investor in Crunchbase. They have no say in our editorial process. For more, head here . ↩