Startup Trends: 5 top funding rounds of Q3 2026
Large private funding rounds in the third quarter of 2026 supported companies working to expand computing capacity, automate software development and strengthen U.S. manufacturing.
For private market investors, these financings provide benchmarks for assessing company growth and institutional investor interest. Fresh capital can help businesses build facilities, improve products and serve more customers, but rising valuations also bring higher expectations. Understanding how each company plans to deploy its funding can help investors evaluate its competitive position and the milestones that may influence future value.
Here are five companies listed on the Forge marketplace that recorded some of the highest funding rounds during Q3 2026, alongside recent developments and valuation data.
Crusoe, building the infrastructure behind AI
Denver-based Crusoe combines energy development, data centers and cloud computing services to support AI workloads. Its business addresses a constraint on AI adoption: companies need reliable power and computing capacity to develop and operate their models.
On September 17, Crusoe announced the initial closing of an anticipated $3.9 billion Series F at a $30.9 billion post-money valuation. Atreides Management, Mubadala Capital and Valor Equity Partners co-led the round, with participation from investors including Nvidia. The company said the funding would support expansion across its infrastructure and cloud businesses.1
That expansion includes Crusoe Spark, modular data centers intended to complement its larger campuses. At the time of the financing announcement, Crusoe reported more than six gigawatts of gross contracted capacity across data centers and cloud, including one gigawatt delivered and operational. For investors, the distinction between contracted and operating capacity matters. Converting future commitments into functioning infrastructure remains a central execution challenge.
Founded in 2018, Crusoe’s Forge PriceTM is $223.51 as of October 6, 2026, implying a valuation of $26.61 billion.
Cognition, expanding AI software engineering
Headquartered in San Francisco, Cognition develops Devin, an AI software engineering agent that can take on development work under human direction. Its platform is designed to help engineering teams expand their output and address work that might otherwise remain unfinished.
On September 8, Cognition announced more than $2 billion in Series E funding at a $48 billion valuation. Andreessen Horowitz and Accel led the round alongside existing investors, including Founders Fund and General Catalyst. The financing follows a Series D fundraise in May at a $26 billion post-money valuation.2
Alongside the announcement, Cognition reported that its revenue run rate had increased from $492 million in May to nearly $900 million. The company also highlighted tools for investigating incidents, identifying security vulnerabilities and initiating work automatically from events in business software. These developments suggest an ambition to handle a broader portion of engineering workflows.
Founded in 2023, Cognition’s last price per share was $212.32 as of its last fundraising round.
Fireworks AI, helping businesses customize and deploy AI
Headquartered in Redwood City, California, Fireworks AI provides infrastructure for businesses to customize and run AI models. It focuses on inference, the process through which a trained model produces an answer or completes a task, as well as tools for adapting models to customers’ own data.
On July 15, Fireworks announced a $1.505 billion Series D at a company-reported valuation of $17.5 billion. Atreides Management, Index Ventures and TCV led the financing, with participation from Nvidia and other investors. Fireworks said it would use the capital to expand computing infrastructure, increase engineering capacity and develop its platform.3
The company also reported that it had surpassed $1 billion in annualized revenue run rate, with more than 95% of the tokens it served coming from models specialized on customers’ proprietary data and specific tasks. That mix points to a potential growth opportunity in helping enterprises build AI capabilities tailored to their own operations.
Founded in 2022, Fireworks AI’s last price per share was $61.65 as of its last funding round.
Tenstorrent, expanding AI chip alternatives
Headquartered in Toronto, Canada, Tenstorrent develops AI processors and licenses chip designs to customers building their own computing systems. Its hardware and open-source software aim to give developers and enterprises more flexibility in running AI workloads, from data centers to local devices.
In August, the private company closed a $575 million in Series E-1 financing and $841.02 million in Series E-2 financing, totaling approximately $1.42 billion. Both rounds carry a $5.76 billion post-money valuation. Investors in those financings are undisclosed.
In September, Tenstorrent and ai& launched JapanFold, a drug discovery platform powered by Tenstorrent Galaxy superclusters. The platform gives researchers and pharmaceutical companies access to open-source models for tasks such as predicting protein structures and generating potential drug candidates, with all computing performed within Japan.4 For investors, the launch illustrates how Tenstorrent is pursuing adoption through specific industry applications and customers seeking local control over their computing infrastructure.
Founded in 2016, Tenstorrent’s last funding-round prices per share were $111.23 for Series E-1 and $81.08 for Series E-2. The company’s past investors include Bezos Expeditions, Ark Venture Fund, LG Electronics and Real Adventures.
Hadrian, scaling advanced manufacturing for defense and aerospace
Torrance, California-based Hadrian builds highly automated factories that combine software, AI and robotics with manufacturing expertise. The company serves defense, aerospace and industrial customers seeking to produce critical components and complete systems in the United States.
In August, Hadrian raised a $1.37 billion Series D round at a $7.87 billion post money valuation. The company said in a statement that the funding would support new factories, research and development, and additional production capabilities. Notable investors in the round include JPMorganChase’s Strategic Investment Group, Valor Equity Partners, Baillie Gifford and Andreessen Horowitz.5
At the time of the announcement, Hadrian reported four facilities covering just under 3 million square feet, including newly launched sites in Arizona and Alabama. Its expansion offers investors a way to track whether automation can help address manufacturing constraints in industries where production speed and reliability are essential. Factory utilization and the ability to deliver programs at scale will be important measures of progress.
Founded in 2017, Hadrian’s last price per share was $66.94 as of its latest funding round.
