The Week’s 10 Biggest Funding Rounds: Physical AI And Predictions Lead The Lineup

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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.

This week showcased a strong array of substantial investments, spearheaded by manufacturing startup Re:Build, which secured $2.1 billion, and predictions marketplace Kalshi, which added another $1 billion. Additional sectors attracting major capital included biotech, construction automation, batteries, and enterprise AI.

1. Re:Build, $2.1B, manufacturing: Re:Build, a manufacturing startup that collaborates with industrial enterprises and innovators spanning everything from product design to large-scale production, secured $2.1 billion in fresh capital. JPMorganChase and General Catalyst spearheaded the financing for the 6-year-old enterprise, which is headquartered in Framingham, Massachusetts.

2. Kalshi, $1B, predictions marketplace: Predictions marketplace Kalshi unveiled a $1 billion Series G financing round guided by Sequoia Capital and Wellington Management. The transaction establishes a $40 billion post-money valuation for the New York-based firm, which reports that its annualized trading volume has surpassed $1 trillion.

3. Bedrock Robotics, $600M, construction tech: San Francisco-headquartered Bedrock Robotics, a creator of autonomous operating systems for heavy construction machinery, secured $600 million in Series C financing steered by CapitalG and Emergence Capital. The transaction elevates Bedrock’s cumulative funding to nearly $1 billion and establishes a post-money valuation of $4.1 billion.

4. Dren Bio, $350M, biotech: Dren Bio, a developer specializing in antibody therapeutics targeting cancer and autoimmune conditions, finalized $350 million in new financing guided by Lightspeed Venture Partners and Juvia Group. The capital will advance late-stage trials for the San Carlos, California-based business’s blood cancer treatments.

5. Group 14 Technologies, $169M, battery tech: Woodinville, Washington-based Group 14 Technologies, a producer and provider of advanced silicon battery components, secured $169 million through a Series D extension round. The company additionally unveiled expansion plans into Europe via a manufacturing facility situated in Sagunto, Spain.

6. (tied) Firehawk Aerospace, $150M, defense tech: Firehawk Aerospace, an innovator in propulsion technology, reported raising more than $150 million in Series D financing at a valuation exceeding $1.4 billion. Rochefort and Advent spearheaded the investment for the 7-year-old enterprise located in Dallas.

6. (tied) Serval, $150M, enterprise AI: Serval, a company concentrating on coding agents designed for enterprise workflow automation, captured $150 million in Series C financing at a $3 billion valuation. Sequoia Capital led the transaction for the 2-year-old, San Francisco-based startup.

8. (tied) General Compute, $100M, AI infrastructure: AI cloud provider General Compute secured $100 million in Series A financing steered by Abstract and Blackbird. The company is scaling its infrastructure utilizing inference processors from Nvidia competitors Positron AI, Cerebras Systems, and SambaNova.

8. (tied) Foundry Robotics, $100M, autonomous factories: Emeryville, California-based Foundry Robotics, an enterprise dedicated to establishing and running autonomous manufacturing facilities, closed on $100 million in Series A funding spearheaded by Marlinspike.

8 (tied) Hex Technologies, $100M, data analytics: Hex Technologies, a startup building an AI-native workspace for data analytics, locked down $100 million in fresh financing. 137 Ventures and Peak XV spearheaded the investment, establishing a $1.2 billion valuation for the San Francisco-based business.

Methodology

We monitored the largest publicly disclosed transactions within the Crunchbase database executed by U.S.-based companies covering the timeframe of Oct. 24–30, 2026. While the vast majority of announced transactions are cataloged, a minor delay may occur due to deals being disclosed late in the week.

?Frequently Asked Questions

01What was the largest funding round of the week?

Manufacturing startup Re:Build secured the week’s largest funding round, bringing in $2.1 billion led by General Catalyst and JPMorganChase.

02Which sectors attracted the most notable investments?

The week featured significant rounds across manufacturing, predictions marketplaces, construction technology, biotech, battery tech, defense tech, enterprise AI, AI infrastructure, autonomous factories, and data analytics.

03Where does this funding data come from?

The data is tracked from announced venture capital rounds captured in the Crunchbase database for U.S.-based companies.

Illustration: Dom Guzman