Re:Build Raises $2.1B as Kalshi and Bedrock Lead Week's Rounds

Manufacturing startup Re:Build secured $2.1 billion in new funding, the largest U.S. startup round announced between Oct. 24 and Oct. 30, 2026. General Catalyst and JPMorganChase led the financing for the six-year-old, Framingham, Massachusetts-based company, which partners with industrial firms and innovators from product design through large-scale production.

Kalshi and Bedrock follow

Predictions marketplace Kalshi announced a $1 billion Series G led by Wellington Management and Sequoia Capital. The round values the New York company at $40 billion post-money. Kalshi says its annualized trading volume now exceeds $1 trillion.

Third was San Francisco-based Bedrock Robotics, which develops autonomous systems for heavy construction equipment. It raised $600 million in a Series C led by CapitalG and Emergence Capital, bringing total funding to nearly $1 billion and setting a post-money valuation of $4.1 billion.

The rest of the top 10

Biotech Dren Bio closed $350 million, led by Juvia Group and Lightspeed Venture Partners, to support advanced trials of its blood cancer therapies. Group 14 Technologies, a maker of silicon battery materials, added $169 million in Series D extension funding and plans a production facility in Sagunto, Spain, as it expands into Europe.

Firehawk Aerospace and Serval tied for sixth with $150 million each. Firehawk, a Dallas propulsion developer, raised a Series D at a valuation above $1.4 billion, led by Advent and Rochefort. Serval, which builds coding agents for enterprise automation, raised a Series C at a $3 billion valuation led by Sequoia Capital.

Three companies tied at $100 million: General Compute, an AI cloud provider building on inference chips from Cerebras Systems, SambaNova and Positron AI; Foundry Robotics, which builds and operates autonomous factories; and Hex Technologies, an AI-native data analytics platform valued at $1.2 billion.