Latest United States Startup Funding Rounds
Startup funding in United States: recent rounds, the companies behind them and their participating investors.
- Rounds
- 2,240 Jan 1 – Oct 28, 2026
- Disclosed funding
- $257.2B 1859 disclosed amounts
- Median round
- $24M Of disclosed amounts
| Company | Amount | Round | Sector | Country | Investors | Announced |
|---|---|---|---|---|---|---|
 ArmadinCompany profile Armadin develops AI agents that test attack paths across enterprise systems and show defenders how connected weaknesses could be exploited. Armadin develops AI agents that test attack paths across enterprise systems and show defenders how connected weaknesses could be exploited. | $255.5M | Series B | Cybersecurity | United States | Investors | |
| S SatlytCompany profile Software that lets satellite operators run additional applications and AI workloads on existing spacecraft. Software that lets satellite operators run additional applications and AI workloads on existing spacecraft. | $8M | Seed | Space tech | United States | Investors | |
| A AugmetaCompany profile AI operators monitor business KPIs and take action to protect revenue or find growth opportunities. AI operators monitor business KPIs and take action to protect revenue or find growth opportunities. | $3M | Seed | Enterprise software | United States | Investors | |
| P PhotonCompany profile Photon provides messaging infrastructure that lets developers run AI agents inside iMessage, WhatsApp and other communication channels. Photon provides messaging infrastructure that lets developers run AI agents inside iMessage, WhatsApp and other communication channels. | $4.5M | Seed | Developer tools | United States | Investors | |
| A AnthropicCompany profile Develops Claude and conducts research into reliable, interpretable and steerable artificial intelligence. Develops Claude and conducts research into reliable, interpretable and steerable artificial intelligence. | ≤$42B | Convertible financing facilityUndisclosed | AI | United States | Investors | |
| AB Aptatek Biosciences, Inc.Company profile Aptatek Biosciences develops connected diagnostic tools for metabolic monitoring at home. Its investigational PheCheck programme measures blood phenylalanine for people with PKU. Aptatek Biosciences develops connected diagnostic tools for metabolic monitoring at home. Its investigational PheCheck programme measures blood phenylalanine for people with PKU. | Undisclosed | Initial close of financingUndisclosed | Biotech | United States | Investors | |
| O OrtetCompany profile Ortet is an AI research lab building models and shared computing and data infrastructure for healthcare and life-science work. Ortet is an AI research lab building models and shared computing and data infrastructure for healthcare and life-science work. | $500M | Investment commitmentUndisclosed | AI | United States | Investors | |
| FE Flow EngineeringCompany profile Flow Engineering builds requirements management software and AI agents for hardware development teams. Flow Engineering builds requirements management software and AI agents for hardware development teams. | $50M | Series B | Enterprise software | United States | Investors | |
| GC GMI CloudCompany profile GMI Cloud provides GPU computing, model inference and infrastructure for AI applications. GMI Cloud provides GPU computing, model inference and infrastructure for AI applications. | $223M | Series B | AI | United States | Investors | |
| C CScaleCompany profile CScale develops optical interconnects that keep large AI computing systems communicating reliably. CScale develops optical interconnects that keep large AI computing systems communicating reliably. | $145M | Series CSeries C+ | Hardware | United States | Investors |
Active investors in this selection
All investors →Ranked by rounds participated in · From Jan 1, 2026
- 1Y Combinator (YC)
Vera Health, BioStack, Tractian
133rounds3led - 2Andreessen Horowitz (a16z)
Hex, ASI, Eka Robotics
100rounds20led - 3General Catalyst
Hyperbolic, Re:Build, Provision Labs
73rounds8led - 4Alumni Ventures
Maxinsights, Daytona, Chariot Claims
59rounds0led - 5Sequoia Capital
Hex, Warhound, Whop
58rounds9led
Latest digests
Archive →Explore published rounds while the next edition is being prepared.