Physical AI and Prediction Markets Ignite a $4 Billion Funding Week

American startups just delivered a funding week with enormous range: manufacturing, prediction markets, construction automation, biotech, batteries, propulsion, and enterprise AI all pulled in major capital. Re:Build led the charge with $2.1 billion, while Kalshi added another $1 billion and pushed prediction-market finance into a new valuation tier.

This weekly feature tracks the Top 10 announced funding rounds in the U.S. The latest lineup shows investors backing companies that connect software and physical systems, from autonomous heavy equipment to advanced manufacturing and silicon battery materials.

Re:Build and Kalshi Set the Pace

Re:Build, a six-year-old manufacturing startup based in Framingham, Massachusetts, secured $2.1 billion in new funding. General Catalyst and JPMorganChase led the financing, with JPMorganChase’s Strategic Investment Group overseeing direct equity investing for its Security and Resiliency Initiative.

Re:Build partners with industrial companies and innovators from product design through large-scale production. The new capital will expand its manufacturing platform and product ecosystem, supporting the company’s mission to ensure the next generation of important products are made at scale in America.

The size of the round makes Re:Build the clear leader in this week’s funding race, but Kalshi delivered the week’s most eye-catching financial milestone. The New York-based predictions marketplace announced a $1 billion Series G financing led by Wellington Management and Sequoia Capital.

The round set Kalshi’s post-money valuation at $40 billion. Kalshi says its business now has annualized trading volume above $1 trillion, giving the company a huge operating scale alongside its new valuation.

Baillie Gifford, Stripes, a16z, Coatue, Layer Global, Morgan Stanley Investment Management, Sequoia Global Equities, CapitalG, Hudson River Trading, and Balyasny Asset Management also joined Kalshi’s financing.

Physical AI Takes a Bigger Role

Bedrock Robotics raised $600 million in Series C funding at a $4.1 billion post-money valuation. CapitalG and Emergence Capital co-led the round for the San Francisco-based developer of autonomous systems for heavy construction equipment.

The financing brings Bedrock’s total funding to nearly $1 billion and will accelerate the volume of Bedrock-equipped machines across commercial construction sites in the U.S. The company aims to help contractors use existing heavy equipment more safely, predictably, and at greater capacity.

New investors in the round included US Innovative Technology Fund, Bessemer Venture Partners, and Temasek. Existing investors 8VC, Georgian, Valor Equity Partners, Xora, Eclipse, Perry Creek Capital, and NVIDIA also participated.

Construction automation was not the only physical technology sector attracting capital. Group 14 Technologies, based in Woodinville, Washington, picked up $169 million in Series D extension funding for its work as a manufacturer and supplier of advanced silicon battery materials.

Group 14 also announced plans to expand into Europe with a production facility in Sagunto, Spain. That combination of fresh capital and a new production site points to a push for battery materials that can move from development into industrial supply.

Biotech, Propulsion, and Enterprise AI Join the Surge

Dren Bio closed a $350 million round led by Juvia Group and Lightspeed Venture Partners. The San Carlos, California-based company develops antibody therapeutics for cancer and autoimmune diseases, and it will use the funding to support advanced trials for its blood cancer therapies.

Firehawk Aerospace secured over $150 million in Series D funding at a valuation of more than $1.4 billion. Advent and Rochefort led the financing for the seven-year-old Dallas-based developer of propulsion technology.

Serval raised $150 million in Series C funding at a $3 billion valuation. The startup focuses on coding agents for enterprise automation, placing it at the intersection of software development and business operations.

Another enterprise-focused company, San Francisco-based Dulo, raised a $130 million seed round from DST Global, Construct Capital, and Lowercarbon Capital. Dulo develops engineering AI models, adding another major round to a week where investors backed AI systems designed for industrial and workplace tasks.

• Re:Build: $2.1 billion in new funding for advanced manufacturing.
• Kalshi: $1 billion in Series G funding at a $40 billion post-money valuation.
• Bedrock Robotics: $600 million in Series C funding at a $4.1 billion post-money valuation.
• Dren Bio: $350 million for antibody therapeutics and advanced blood cancer trials.
• Group 14 Technologies: $169 million in Series D extension funding for advanced silicon battery materials.
• Firehawk Aerospace: Over $150 million in Series D funding at a valuation above $1.4 billion.
• Serval: $150 million in Series C funding at a $3 billion valuation.
• Dulo: $130 million in seed funding for engineering AI models.

The full weekly feature covers the Top 10 announced funding rounds in the U.S., and this group shows where the strongest momentum is gathering: industrial production, autonomous machines, prediction markets, biotech, batteries, propulsion, and enterprise AI.

Capital is moving toward startups that can reshape real systems, not only build another software layer. Re:Build is expanding American manufacturing, Bedrock is putting autonomous systems onto construction equipment, and Group 14 is preparing a European production facility. At the same time, Kalshi’s $40 billion valuation and $1 trillion annualized trading volume show how far a digital prediction marketplace can scale.

The next stage will test how these companies turn huge rounds into factories, trials, machines, materials, and enterprise tools. This week’s funding leaders are not waiting for the future to arrive—they are financing the systems meant to build it.

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