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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 featured a robust lineup of large rounds, led by manufacturing startup , which closed on $2.1 billion, and predictions marketplace , which picked up another $1 billion. Other sectors in which startups drew significant rounds included construction automation, biotech, batteries and enterprise AI.

1. , $2.1B, manufacturing: Re:Build, a manufacturing startup that partners with industrial companies and innovators from the product design phase to large-scale production, secured $2.1 billion in new funding. and led the financing for the 6-year-old, Framingham, Massachusetts-based company.

2. , $1B, predictions marketplace: Predictions marketplace Kalshi announced a $1 billion Series G financing led by and . The round set a $40 billion post-money valuation for New York-based Kalshi, which says its business’ annualized trading volume now exceeds $1 trillion.

3. , $600M, construction tech: San Francisco-based Bedrock Robotics,  a developer of autonomous systems for heavy equipment used in construction, raised $600 million in Series C funding led by and . The round brings Bedrock’s total funding to nearly $1 billion and sets a post-money valuation of $4.1 billion.

4. , $350M, biotech: Dren Bio, a developer of antibody therapeutics for cancer and autoimmune diseases, closed on $350 million in a new round led by and . The funding will support advanced trials for the San Carlos, California-based company’s blood cancer therapies.

5. , $169M, battery tech: Woodinville, Washington-based Group 14 Technologies, a manufacturer and supplier of advanced silicon battery materials, picked up $169 million in Series D extension funding. The company also announced plans to expand into Europe with a production facility in Sagunto, Spain.

6. (tied) , $150M, defense tech: Firehawk Aerospace, a developer of propulsion technology, said it secured over $150 million in Series D funding at a valuation of more than $1.4 billion. and led the financing for the 7-year-old, Dallas-based company.

6. (tied) , $150M, enterprise AI: Serval, a startup focused on coding agents for enterprise automation, raised $150 million in Series C funding at a $3 billion valuation. led the round for the 2-year-old, San Francisco-based company.

8. (tied) , $100M, AI infrastructure: AI cloud provider General Compute picked up $100 million in Series A funding led by and . The company is building out its infrastructure using inference chips from rivals , and .

8. (tied) , $100M, autonomous factories: Emeryville, California-based Foundry Robotics, a startup focused on building and operating autonomous factories, closed on $100 million in a Series A funding round led by .

8(tied) , $100M, data analytics: Hex Technologies, a startup focused on building an AI-native platform for data analytics, secured $100 million in new financing. and led the round, which set a $1.2 billion valuation for the San Francisco-based company.

Methodology

We tracked the largest announced rounds in the °µÍø³Ô¹Ï database that were raised by U.S.-based companies for the period of Oct. 24-30, 2026. Although most announced rounds are in the database, there may be a small time lag, as some rounds are reported late in the week.

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