signal/raiseTrack rounds
Monthly report

September 2026 startup funding report

Who raised, how much, and which sectors, stages and regions drew the money in September 2026.

Research desk · data to 30 September 2026
Raised$26.72bn
Rounds125
Median round$35m
$100m+ rounds48

We tracked 125 startup funding rounds in September 2026, together worth $26.72bn in disclosed funding. The median disclosed round was $35m.

The largest was Crusoe's $3.9bn Series D+ round, led by Atreides Management and Mubadala Capital, at a $30.9bn valuation. 48 rounds reached $100m or more and accounted for 93% of the money.

AI led by sector with $13.31bn across 22 rounds. By region, North America took $19.02bn (71%).

30 companys raised at a valuation of $1bn or more: HiBob, Lyte, Gimlet Labs, Cognition, Mistral AI, Celero and others.

The biggest rounds

  1. 1CrusoeSeries D+ · AI · Denver$3.9bn
  2. 2Mistral AISeries D+ · AI · Paris$3.5bn
  3. 3The Boring CompanySeries D+ · Mobility & logistics · Bastrop$3bn
  4. 4CognitionSeries D+ · AI · San Francisco$2bn
  5. 5Stoke SpaceSeries D+ · Defence & space · Kent$1bn
  6. 6InstinctSeries C · AI · San Francisco$1bn
  7. 7PositronSeries C · AI · Reno$875m
  8. 8Mach IndustriesSeries C · Defence & space · Huntington Beach$600m
  9. 9HarveySeries D+ · Legal & compliance · San Francisco$550m
  10. 10TemporalSeries D+ · Developer tools · United States$550m

Figures cover the rounds in our tracker, which records disclosed amounts converted to US dollars at announcement. See the methodology.

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