The Week’s 10 Biggest Funding Rounds: Crusoe And Fluidstack Lead Multibillion-Dollar AI Infrastructure Haul
Summary
This weekly roundup highlights the largest funding rounds raised by U.S.-based startups. AI infrastructure companies dominated the list, led by Crusoe’s $3 billion round and Fluidstack’s $1.5 billion financing. Other software and infrastructure names on the list include Gimlet Labs, Upwind Security, HiBob, TabaPay, and HiddenLayer. The article also notes TabaPay’s parallel pursuit of acquiring Transact Bank, but the main focus remains venture funding activity.
Funding
Amount
$3.0B
Total raised
Date
September 4, 2026
Announcement date
Investors
Bessemer Venture Partners, Greenoaks Capital, Menlo Ventures, ICONIQ Capital, Mubadala Capital, Sapphire Ventures, LLC, Salesforce Ventures, Technology Crossover Ventures, CyberStarts, Morgan Stanley Principal Investments, Arm, Greylock, Delta-v Capital, FTV Capital, Atreides Management, Andreessen Horowitz, M12, Craft Ventures, Farallon Capital Management, Ten Eleven Ventures, Humana
Lead investors
Company
-
Funded company
AskAI Classifications
Sectors
No sectors detected
Functions
No functions detected