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The Week鈥檚 10 Biggest Funding Rounds: AI Still Rules, But SF Bay Area Steps Back

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This is a weekly feature that runs down the week鈥檚 top 10 announced funding rounds in the U.S. Check out last week鈥檚 biggest funding rounds here.

The San Francisco Bay Area, long the dominant region for startup investment, took a step back in this week鈥檚 tally of the largest funding rounds. The biggest investments went to companies based in the Seattle area, Southern California, New York and Austin, Texas, while only two of this week鈥檚 top 10 are Silicon Valley startups.

But while the geography may look different this week, investors鈥 appetite for AI remained a dominant theme. One exception, however, was the week鈥檚 largest round, for , a developer of advanced silicon battery materials.

1. , $463M, batteries: Group14 Technologies, a developer of advanced silicon battery materials, $463 million in a Series D round led by and included a long list of existing investors. The Woodinville, Washington-based company also obtained full ownership of a South Korean factory launched as a joint venture with SK.

2. , $405M, robotics and AI: Field AI, developer of a 鈥渟ingle software brain鈥 used to power robots in a variety of environments, that it secured $405 million in two consecutive rounds of $314 million and $91 million. , and co-led the financing for the Irvine, California-based company.

3. , $250M, AI: New York-based EliseAI, a provider of AI automation tools for the housing and healthcare sectors, landed $250 million in a Series E backed by , , and . The company also said it plans to triple the size of its team.

4. , $230M, security: Ontic, a provider of intelligence tools for corporate security, raised $230 million in a Series C round led by funds managed by . The Austin, Texas-based company will use the money to invest in AI technology for threat detection and automation for security teams.

5. , $105M, supply chain: Austin, Texas-based Overhaul, provider of an in-transit supply chain risk management platform, locked up $105 million in Series C funding led by . The round brings total funding to date for the 9-year-old company to more than $304 million, per .

6. (tied) , $100M, nuclear energy: Aalo, an Austin, Texas, startup planning to build nuclear power facilities with an initial focus on supplying energy to data centers, closed a $100 million Series B financing led by .

6. (tied) , $100M, sleep tech: Eight Sleep, a startup developing 鈥渟leep fitness鈥 products, announced that it has raised $100 million in a Series D led by . The round brings funding to date for the 11-year-old, New York-based startup to more than $260 million, per .

8. , $97M, autonomous vehicles: Mountain View, California-based Nuro, a developer of autonomous driving technology and software, that it picked up $97 million in a Series E extension at a $6 billion valuation.

9. , $65.5M, real estate finance: Phoenix-based Bonus Homes, a provider of financing for homeowners in lieu of selling their homes, raised $65.5 million in early-stage funding from backers including , , and .

10. , $47M, AI agents: TinyFish, a developer of enterprise web agents, or AI infrastructure systems that carry out workflows on the web, launched publicly with $47 million in committed funding. led the financing for the Palo Alto, California-based startup.

Methodology

We tracked the largest announced rounds in the 附近上门 database that were raised by U.S.-based companies for the period of Aug. 16-22. 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.

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