ÌÇÐÄÊÓƵ

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.

AI once again dominated venture funding this week, claiming five of the 10 largest announced rounds, including a pair of billion-dollar financings for AI infrastructure and cybersecurity that led the pack. Investors also continued to back quantum computing, geothermal energy, crypto infrastructure and aerospace startups with large checks. Let’s take a look.

1. (tied) , $1B, cybersecurity: Keyfactor raised a $1 billion private equity round led by. Other investors in the private equity round for the Independence, Ohio-based company included and . Keyfactor provides digital identity and machine identity management software that helps enterprises secure certificates, encryption keys and connected devices. It has now raised $1.21 billion to date, .

1. (tied) , $1B, AI infrastructure: Palo Alto, California-based SambaNova officially announced a long-awaited $1 billion Series F deal at an $11 billion post-money valuation led by. A of other investors joined the round, including ,,,,, and. SambaNova develops AI chips and enterprise AI infrastructure for training and inference workloads. The company has raised nearly $2.5 billion to date, .

3. , $300M, quantum computing: , and co-led a sizable $300 million Series A for South Pasadena, California-based quantum startup Oratomic. A of 16  investors participated in the round, including , , , co-founder , and computer scientist . Oratomic is developing neutral-atom quantum hardware and fault-tolerant architectures designed to accelerate the commercialization of quantum computing, an area that has seen robust venture investment in recent years.

4. , $134M, clean energy: Houston-based Quaise Energy raised a $134 million Series B led by . Additional investors included , and. Quaise is developing millimeter-wave drilling technology to unlock deep geothermal energy, an emerging source of carbon-free power. To date, the company has raised $225 million.

5. , $130M, artificial intelligence: San Francisco-based Prime Intellect raised a $130 million Series A led by . A of investors — many of them prominent Silicon Valley figures — joined, including CEO , °ä·¡°¿Ìý , co-founder , CEO and co-CEO . Corporate investors , and also backed the round. Prime is building an open platform for training and deploying AI models across distributed compute networks. It has now raised $200.4 million total, .

6. , $125M, crypto infrastructure: New York-based Gauntlet raised a $125 million Series B, with Japan’s as the sole investor. The company develops simulation, risk management and optimization software for decentralized finance protocols.

7. , $120M, artificial intelligence: New York-based Norm AI secured a $120 million Series C led by at a reported $1.2 billion valuation to expand its AI-powered regulatory compliance platform. The company develops AI systems that translate complex laws and regulations into software to help enterprises automate their compliance workflows. The latest funding included a long list of other venture, corporate and individual backers including , , , and , the chairman of and former president of , which also participated in Norm AI’s deal. The startup has now raised just over $256 million, .

8. , $91M, aerospace and defense: Aerospace continues to draw substantial investor attention, as was the case this week with Houston-based Venus Aerospace’s $91 million Series B. backed the round, which will be used to advance development of Venus’ hypersonic propulsion technology. The company is building engines and aircraft designed to dramatically reduce long-distance flight times while supporting future defense applications. It has now raised $197 million total. An of investors joined in its Series B, including , , , and .

9. , $76M, fintech: Digital asset exchange EDX Markets raised $76 million as institutional interest in crypto trading infrastructure continues to grow. The deal was backed by sole investor , marking the second large crypto funding deal for the Japanese firm this week, along with Gauntlet’s aforementioned round. EDX operates a marketplace designed specifically for institutional investors. It’s not clear how much it raised in previous rounds.

10. , $67.4M, biotechnology: Philadelphia-based Fore Biotherapeutics (previously known as NovellusDx) raised $67.4 million in Series D funding to advance its precision oncology therapies targeting rare cancer mutations. The company is developing targeted treatments for patients whose tumors are driven by specific genetic alterations. led the latest round, which brings its total to date to just over $274 million. , , , and other investors also joined.

Large non-US deals:

Several startups based outside the U.S. also raised notable fundings this week. They include:

• , €411M, fusion energy: Munich-based Proxima Fusion raised a €411 million (about $468 million) Series B funding round to develop what’s poised to become Europe’s first commercial fusion energy power plant. Lead investors in the round include , , and .
• , €200M, workplace tech: led the €200 million ($229 million) private-equity round for Paris-based Skello, which makes HR software for employers to handle tasks such as payroll, scheduling, compliance and employee communications.

Methodology

We tracked the largest announced rounds in the Crunchbase database that were raised by U.S.-based companies for the period of July 4-10. 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: