signal/raiseTrack rounds

Biggest startup funding rounds in September 2026

The largest startup rounds announced in September 2026, ranked by round size.

Rounds ranked50
Combined$25.05bn
Median$219m
  1. 1CrusoeSeries D+ AI · Denver · 17 Sep · led by Atreides Management, Mubadala Capital · $30.9bn valuation$3.9bn
  2. 2Mistral AISeries D+ AI · Paris · 8 Sep · led by Samsung Electronics, Scaleup Europe Fund · $24.4bn valuation$3.5bn
  3. 3The Boring CompanySeries D+ Mobility & logistics · Bastrop · 9 Sep · led by United Arab Emirates · $23bn valuation$3bn
  4. 4CognitionSeries D+ AI · San Francisco · 8 Sep · led by Andreessen Horowitz, Accel · $48bn valuation$2bn
  5. 5InstinctSeries C AI · San Francisco · 28 Sep · $10bn valuation$1bn
  6. 6Stoke SpaceSeries D+ Defence & space · Kent · 8 Sep · led by Point72 Ventures, Spark Capital$1bn
  7. 7PositronSeries C AI · Reno · 10 Sep · led by NEA, Atreides Management · $5bn valuation$875m
  8. 8Mach IndustriesSeries C Defence & space · Huntington Beach · 10 Sep · $3.7bn valuation$600m
  9. 9TemporalSeries D+ Developer tools · United States · 14 Sep · led by Lightspeed Venture Partners, Wellington Management · $12.55bn valuation$550m
  10. 10HarveySeries D+ Legal & compliance · San Francisco · 9 Sep · led by Diffusion, Lightspeed Venture Partners · $15.5bn valuation$550m
  11. 11The Exploration CompanySeries C Defence & space · Munich · 8 Sep · led by Bessemer Venture Partners, Atomico$450m
  12. 12IslandSeries D+ Cybersecurity · Dallas · 24 Sep · led by Evolution Equity Partners · $6.4bn valuation$400m
  13. 13CyeraSeries D+ Cybersecurity · Israel · 22 Sep · led by Goldman Sachs Alternatives · $12bn valuation$400m
  14. 14EliseAISeries D+ AI · New York · 29 Sep · led by Andreessen Horowitz, Bessemer Venture Partners · $4bn valuation$350m
  15. 15Snorkel AISeries D+ AI · San Francisco · 22 Sep · led by Insight Partners, S32 · $3.5bn valuation$350m
  16. 16barqSeries A Fintech · Riyadh · 15 Sep · $1.85bn valuation$330m
  17. 17EnvedaSeries D+ Healthtech & bio · Boulder · 23 Sep · led by Catalio Capital Management · $2bn valuation$311m
  18. 18Impulse SpaceSeries D+ Defence & space · Redondo Beach · 16 Sep · $5.4bn valuation$308m
  19. 19Gimlet LabsSeries B AI · San Francisco · 4 Sep · led by Andreessen Horowitz · $3bn valuation$300m
  20. 20CeleroSeries C Robotics & hardware · Irvine · 9 Sep · led by Atreides Management, Valor Equity Partners · $3bn valuation$275m
  21. 21Encoded TherapeuticsSeries D+ Healthtech & bio · South San Francisco · 9 Sep · led by GV$275m
  22. 22ExeinSeries D+ Cybersecurity · Rome · 15 Sep · led by Headline · $1.7bn valuation$270m
  23. 23Precision NeuroscienceSeries D+ Healthtech & bio · New York · 24 Sep · led by Pershing Square, Ackman Oxman Institute · $1bn valuation$250m
  24. 24RidgelineSeries D+ Fintech · Incline Village · 16 Sep · led by Dave Duffield · $1.43bn valuation$250m
  25. 25TabbySeries D+ Fintech · Saudi Arabia · 14 Sep · led by Blue Pool Capital · $6.5bn valuation$233m
  26. 26Cornelis NetworksSeries C Robotics & hardware · Wayne · 14 Sep · led by IAG Capital Partners$205m
  27. 27FactorySeries D+ AI · San Francisco · 15 Sep · $5bn valuation$200m
  28. 28VerdaSeries B AI · Helsinki · 22 Sep · led by Emergence Capital$189m
  29. 29Simple EnergySeries C Mobility & logistics · Bengaluru · 30 Sep · led by Dr. Arokiaswamy Velumani Family Office$180m
  30. 30ProfoundSeries D+ Commerce & marketing · New York · 15 Sep · led by Sequoia Capital, Kleiner Perkins · $1.8bn valuation$180m
  31. 31HiBobGrowth HR & work · New York · 1 Sep · led by Salesforce · $3.2bn valuation$166m
  32. 32LyteSeries C Robotics & hardware · Sunnyvale · 2 Sep · led by Maverick Silicon · $1.6bn valuation$165m
  33. 33SiMa.aiSeries C AI · San Jose · 28 Sep · led by Fidelity, Amplify · $1.45bn valuation$150m
  34. 34Basecamp ResearchSeries C Healthtech & bio · London · 23 Sep · led by S32 · $800m valuation$140m
  35. 35Mazama EnergySeries B Climate & energy · Frisco · 17 Sep · led by Centaurus Capital, Doerr Capital$135m
  36. 36BuildotsSeries D+ Proptech · Tel Aviv · 14 Sep · led by O.G. Venture Partners$130m
  37. 37KapitalSeries C Fintech · Mexico City · 10 Sep · led by Tru Arrow Partners, Fasanara Capital$125m
  38. 38iPronicsSeries B Robotics & hardware · Valencia · 2 Sep · led by Maverick Silicon, Light Street Capital$125m
  39. 39BrainChild BioSeries A Healthtech & bio · Seattle · 8 Sep$116m
  40. 40ClaySeries D+ AI · New York · 9 Sep · led by Wellington Management · $7.1bn valuation$115m
  41. 41CADDiSeries D+ Enterprise software · Tokyo · 15 Sep · $1.2bn valuation$114m
  42. 42ThatchSeries C HR & work · United States · 15 Sep · $1bn valuation$108m
  43. 43QuartermasterSeries B Defence & space · Arlington · 28 Sep · led by Insight Partners$100m
  44. 44NumeralSeries C Fintech · San Francisco · 23 Sep · led by Insight Partners$100m
  45. 45HeidiSeries C Healthtech & bio · Melbourne · 22 Sep · led by Blackbird · $900m valuation$100m
  46. 46Tandem HealthSeries B Healthtech & bio · Stockholm · 14 Sep · led by Scaleup Europe Fund (EQT)$100m
  47. 47PixxelSeries C Defence & space · Bengaluru · 7 Sep · led by Temasek, Seraphim$100m
  48. 48HiddenLayerSeries B Cybersecurity · Austin · 2 Sep · led by Delta-v Capital$100m
  49. 49Efficient ComputerSeries B AI · Pittsburgh · 29 Sep · led by TQ Ventures · $650m valuation$97m
  50. 50UltravioletteSeries D+ Mobility & logistics · Bengaluru · 23 Sep · led by Yali Capital, TDK Ventures$85m

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