VC Funding Top Ten — September 20, 2026: AI Infra, Mega Rounds, SoftBank M&A

Overview

Sunday, September twentieth, three PM Pacific. Today's biggest check is a massive three billion dollars for Crusoe Energy Systems, valuing the AI infrastructure player at a reported thirty billion dollars. This single deal highlights the dominant theme of the day: the immense capital required to power artificial intell

In this show

• Sunday, September twentieth, three PM Pacific. Today's biggest check is a massive three billion dollars for Crusoe Energy Systems, valuing the AI infrastructure player at a reported thirty billion dollars. This single deal highlights the dominant theme of the day: the immense capital required to power artificial intelligence. We're seeing major moves across the board, from developer tools to space logistics and a significant acquisition in robotics. Let's break down the numbers with our Markets and World analysts.
• Here's the snapshot. Ten disclosed rounds pulled in a total of four-point-four-nine billion dollars today. The hottest category remains AI Infrastructure, accounting for four of the top ten deals. On the M&A front, SoftBank has agreed to acquire the Robotics and AI Institute from Hyundai Motor Group, signaling a major strategic push. The story of the day is clear: AI infrastructure's insatiable demand for capital and energy is reshaping the venture landscape, with Crusoe's mega-round leading the charge.
• Following that massive Crusoe deal, the number two spot goes to Temporal Technologies, raising a five hundred fifty million dollar Series E. This round catapults their valuation to twelve-point-five-five billion dollars. The capital comes from a stacked syndicate including Lightspeed, Wellington, and Goldman Sachs. Temporal provides an open-source platform for developers to build and manage resilient applications and AI agents. This high valuation underscores the critical need for robust developer tools as AI systems become more complex and stateful.
• At number three, we head to orbit with Impulse Space. The company secured a three hundred eight million dollar Series D extension, though the lead investor was not disclosed. This latest tranche brings their total Series D funding to a massive eight hundred eight million dollars. Impulse develops in-space transportation, essentially space tugs designed to move satellites between different orbits. This significant follow-on funding signals very strong investor confidence in the emerging market for in-space logistics and last-mile satellite delivery.
• Back on the ground, fintech player Ridgeline lands at number four with a two hundred fifty million dollar Series E. The round, led by founder Dave Duffield, sets a new valuation of one-point-four-five billion dollars. Ridgeline is building a modern, AI-enabled platform for investment management firms, aiming to replace legacy systems by unifying front, middle, and back-office operations. A founder-led round of this size for a vertical SaaS company shows a deep conviction in the opportunity to modernize the technology stack of the financial services industry.
• At number five, another major AI Infra deal. Factory has raised a two hundred million dollar venture round, reaching a five billion dollar valuation. Details on the lead investor remain under wraps. Factory is focused on a critical enterprise problem: accelerating software development. They provide a suite of AI-powered tools designed to boost developer productivity and slash delivery times. This deal is yet another data point confirming the sky-high valuations investors are willing to place on any platform that can bring AI efficiencies to the software development lifecycle.
• The sixth largest round today goes to Profound, an enterprise SaaS company raising a one hundred eighty million dollar Series D. The round was co-led by Sequoia Capital and Kleiner Perkins, valuing the company at one-point-eight billion dollars. Profound is tackling a new marketing challenge: how do brands get discovered in a world of AI-powered search and answer engines? Their software helps optimize brand visibility for these new platforms. This funding highlights the birth of a new MarTech category focused on what could be called 'Answer Engine Optimization'.
• At number seven, Arcee AI closes a one hundred fifty million dollar Series B, pushing its valuation across the one billion dollar threshold. Vista Equity Partners, Cambium Capital, and Emergence Capital co-led the investment. Arcee is taking a different approach to the AI model race. Instead of building massive, general-purpose models, they specialize in developing and open-sourcing small, highly performant models tailored for specific enterprise tasks. This funding validates a growing enterprise demand for more efficient, customizable, and transparent AI solutions.
• In the biotech sector, Sling Therapeutics lands at number eight with a one hundred twenty-three million dollar Series C. The round was led by Forbion Capital Partners. Sling is a clinical-stage company developing an oral small-molecule therapy for thyroid eye disease, a debilitating autoimmune condition. This is a significant capital injection that will fund their late-stage clinical trials. A successful oral treatment would be a major breakthrough, offering a more convenient alternative to the current standard of care, which requires infusions.
• At number nine is a major M&A event. SoftBank is acquiring the Robotics and AI Institute from its founder, Hyundai Motor Group. While financial terms were not disclosed, this is a significant strategic move. The institute is focused on R&D for advanced robotics and AI, areas where SoftBank has a long history, including its previous ownership of Boston Dynamics. This acquisition signals SoftBank is doubling down on its commitment to the physical embodiment of AI, moving beyond software to acquire core research talent and intellectual property in next-generation robotics.
• Rounding out our top ten is a massive commitment to a new fund. Nvidia is anchoring the new Brookfield Artificial Intelligence Infrastructure Fund with a two billion dollar investment. The fund, managed by Brookfield Asset Management, is targeting a total of ten billion dollars to invest in the essential infrastructure underpinning the AI industry. This isn't about software; it's about the hard assets—data centers, power generation, and supply chains. Nvidia's role as an anchor investor underscores the strategic necessity of building out the physical world to support the virtual one.
• Looking ahead, the big event to watch is the public market debut of Nscale. The data center developer, which specializes in facilities for AI workloads, filed its IPO paperwork on Friday. The company is looking to raise up to three billion dollars. This will be a critical test of public investor appetite for these highly capital-intensive AI infrastructure businesses, especially coming on the heels of Nscale's enormous forty-four-point-six billion dollar contract with Anthropic. That's our show for today. We'll be back tomorrow afternoon at three PM Pacific with the next deal flow.