Monthly roundup · Deeptech · October 2026

Deeptech startup funding, October 2026: Re:Build's $2.1B Growth leads 18 rounds

By Millionrounds ResearchPublished 1 November 2026

We read 18 equity rounds in Deeptech announced in October 2026, raising $3.7B between them: 2% of all the rounds we read that month and 6% of the money. The largest was Re:Build's $2.1B Growth, led by General Catalyst and JP Morgan Chase. The median seed round was $5.7M, against $5.5M over the last twelve months across all sectors; at Series A it was $9.0M.

Equity rounds18in Deeptech, 16 with an amount
Raised$3.7Bacross those rounds
Lead named100%of rounds say who led
Share of the month2%of rounds; 6% of the money

The biggest rounds

  1. 1Re:BuildGrowth · United States · led by General Catalyst, JP Morgan Chase$2.1B
  2. 2TenstorrentSeries E · United States · led by InnovationX, Trace Capital$1.5B
  3. 3QQuantrolOxSeries A · Finland · led by EIC Accelerator, IW Capital$13M
  4. 4QuanfluenceSeed · India · led by Chiratae Ventures$10M
  5. 5UniSieveSeries A · Switzerland · led by Orano Venture Fund$9.0M
  6. 6DDeepslateSeed · Germany · led by 42CAP$8.6M
  7. 7KodamaSeed · United States · led by Konvoy Ventures, Breakwater Ventures$7.0M
  8. 8SSonexos SAPre-seed · Switzerland · led by Valquest Partners$6.1M
  9. 9OOne Silicon Chip Photonics (OSCP)Series A · Canada · led by New Science Venture$6.0M
  10. 10MMolagriSeed · Canada · led by Convective Capital$5.8M

Day by day

Equity rounds in Deeptech announced each day of October. The busiest day was 7 October, with 3.

1 October31 October

By stage, against the year

Each stage's median this month beside its twelve-month median: the sector's own where we hold enough rounds for a benchmark, otherwise the one across all sectors.

Pre-seed3$5.3Mthis month$2.0M12 months, all sectors
Seed9$5.7Mthis month$5.5M12 months, all sectors
Series A3$9.0Mthis month$20M12 months, all sectors
Growth2$2.1Bthis month$113M12 months, all sectors

Where

United States had the most Deeptech rounds this month.

Against the month

  • Rounds, Deeptech18
  • Rounds, all sectors733
  • Raised, Deeptech$3.7B
  • Raised, all sectors$59B

The whole of October 2026

Other sectors in October

411 roundsAI→100 roundsFintech→72 roundsHealthcare→67 roundsSoftware→67 roundsRobotics→56 roundsManufacturing→44 roundsSaaS→44 roundsConstruction→42 roundsHardware & Electronics→41 roundsBiotech→34 roundsBig Data & Analytics→33 roundsEnergy→33 roundsLogistics→32 roundsEnterprise Software→29 roundsAerospace & Space→29 roundsHealthtech→28 roundsCybersecurity→26 roundsDefence Tech→25 roundsCloud→24 roundsEntertainment→23 roundsB2C→23 roundsFinancial Services→22 roundsMedical Devices→20 roundsCleantech→19 roundsE-commerce→19 roundsFood & Beverage→18 roundsReal Estate→18 roundsSemiconductors→17 roundsAgtech→16 roundsDeveloper Tools→15 roundsWeb3 & Crypto→15 roundsRetail→15 roundsMartech→14 roundsSupply Chain→14 roundsInsurtech→14 roundsTelecoms→14 roundsClimate Tech→13 roundsRegtech→13 roundsAutomotive & EVs→13 roundsChemicals & Materials→12 roundsFuture of Work→12 roundsB2B→12 roundsMedia→12 roundsGaming→11 roundsProfessional Services→11 roundsMarketplaces→11 roundsHR Tech→11 roundsEducation→11 roundsSalestech→10 roundsProptech→10 roundsPharma→10 roundsFashion→10 roundsTravel & Hospitality→