November 01, 2026 – The ten largest US startup deals from October 24 to 30 raised at least $4.8 billion, and factories, robots and a prediction market took most of it.
In Summary
The week’s ten biggest US rounds raised at least $4.8 billion, with Re:Build taking $2.1 billion.
Kalshi raised $1 billion at a $40 billion valuation, about 3.6 times its December 2025 value.
Bedrock Robotics raised $600 million at $4.1 billion for autonomous excavators.
Hardware and industrial firms took roughly 65% of the top ten total, by Catenaa’s count.
Physical AI and prediction markets led the week’s biggest funding rounds in the US. The ten largest deals from October 24 to 30 raised at least $4.8 billion, according to Crunchbase data. Manufacturing platform Re:Build alone took $2.1 billion. Meanwhile, Kalshi added $1 billion at a $40 billion valuation. Most of the money went to firms that build or move physical things.
Re:Build Tops the Biggest Funding Rounds
General Catalyst and JPMorganChase’s Strategic Investment Group led the $2.1 billion Re:Build round. The Massachusetts firm helps factories go from product design to large scale output. It plans to add capacity for hard tech goods and start new industrial firms. That one deal made up about 44% of the top ten total.
Construction robotics drew the next large check. Bedrock Robotics raised a $600 million Series C at a $4.1 billion valuation. CapitalG and Emergence Capital co-led the deal. The 2024 startup, run by former Waymo engineers, turns excavators into self-driving machines. Its machines began paid work on live job sites in mid-August. The firm has now raised nearly $1 billion in total. Its customer count has more than doubled since 2025.
Other hardware bets also made the list. Foundry Robotics raised $100 million to build and run autonomous factories. Battery materials maker Group14 Technologies added $169 million and plans a plant in Sagunto, Spain. Defense propulsion firm Firehawk Aerospace raised more than $150 million at a value above $1.4 billion. In all, hardware firms took about $3.1 billion, or roughly 65% of the top ten.
Kalshi Nearly Doubles Its Value Again
Kalshi’s $1 billion Series G set a $40 billion post-money valuation. Wellington and Sequoia co-led the round, and ten other investors joined. The New York exchange says its yearly trading pace now tops $1 trillion. It also claims more than 30 million accounts and over 75% of prediction market volume. Its non-sports business alone brings in over $1 billion a year in revenue, the company says.
The climb has been steep. Kalshi was worth $11 billion in December 2025. It then reached $22 billion in May. As a result, its value has risen about 3.6 times in under 11 months. Kalshi says the cash will fund new indices, single stock futures and growth in Latin America and Europe.
Software Rounds Still Command High Prices
AI software also kept a place among the biggest funding rounds. Sequoia led a $150 million Series C for Serval at a $3 billion valuation. The two-year-old firm builds AI agents that handle IT and back-office tasks. Separately, analytics platform Hex raised $100 million at a $1.2 billion valuation. Peak XV and 137 Ventures co-led that deal, and Hex says over 2,500 customers use its product. The firm also launched Hex 4.0, a rebuilt tool made for AI agents.
Elsewhere, Dren Bio raised $350 million for antibody drugs against cancer and autoimmune disease. General Compute also landed $100 million to build an AI cloud on inference chips. Even so, these smaller deals show steady demand for software and biotech.
What the Week Signals
The pattern looks consistent. Investors now pair AI with physical work, from factories to excavators. At the same time, they keep paying up for platforms with proven volume, such as Kalshi. Because of that mix, a few large checks now drive the biggest funding rounds each week. Without Re:Build and Kalshi, the top ten would have raised about $1.7 billion.
