Deep tech investors backing startups in the United States
100 investors hold two or more deep tech startups in the United States each, 215 portfolio startups in all. The most active here are Techstars (31), Y Combinator (23) and Plug and Play (15). 15 of them are accelerators.
Investors by their portfolio companiesRebuilt 12 Nov 2026
investors
100
portfolio startups
215
of them raised in 12 months
3
accelerators
15
Investors backing startups in the United States
| Investor | Startups here | Portfolio rounds, 12 mo | Latest activity |
|---|---|---|---|
 TechstarsAccelerator · United States · Mast Reforestation, Project Canary, Urban Sky | 31 | 112 | Nov 2026 |
 Y CombinatorAccelerator · United States · REGENT, Andromeda Surgical, Rigetti Computing | 23 | 259 | Oct 2026 |
 Plug and PlayAccelerator · United States · Citrine Informatics, Atmo, Squint | 15 | 159 | Nov 2026 |
 DCVCVenture capital · United States · Rainmaker, Kairos Power, REGENT | 9 | 28 | Nov 2026 |
 Lowercarbon CapitalVenture capital · United States · Living Carbon, Remora, Commonwealth Fusion Systems | 9 | 16 | Sep 2026 |
 Elemental ImpactAccelerator · United States · Mast Reforestation, Vibrant Planet, Dimensional Energy | 7 | 11 | Sep 2026 |
 Khosla VenturesVenture capital · United States · Commonwealth Fusion Systems, Synchron, Vitara | 6 | 43 | Nov 2026 |
 SOSVAccelerator · United States · Mesa Quantum, OneSkin, Clarity | 6 | 37 | Nov 2026 |
 General CatalystVenture capital · United States · SAIC, Lila Sciences, Oratomic | 5 | 124 | Nov 2026 |
 Toyota VenturesVenture capital · United States · Living Carbon, Arcturus, Haiqu | 5 | 17 | Oct 2026 |
 ARCH Venture PartnersVenture capital · United States · Synchron, Quantum Circuits, Pheast Therapeutics | 5 | 16 | Oct 2026 |
 New Mountain CapitalPrivate equity · United States · Pearce Services, 3E, Cumming Group | 5 | 2 | Sep 2026 |
 Andreessen HorowitzVenture capital · United States · Rigetti Computing, Cyngn, Standard Nuclear | 4 | 101 | Nov 2026 |
 Lightspeed Venture PartnersVenture capital · United States · Discovered Materials, Helion Energy, Eagle Technology Partners Inc | 4 | 86 | Nov 2026 |
 Soma CapitalVenture capital · United States · REGENT, Living Carbon, Meadow | 4 | 63 | Nov 2026 |
 Silicon Valley InvestclubAccelerator · Lila Sciences, Quantinuum, Commonwealth Fusion Systems | 4 | 47 | Nov 2026 |
 Meta PlanetVenture capital · Estonia · PsiQuantum, Experiment, Living Carbon | 4 | 22 | Oct 2026 |
 Energy Impact PartnersVenture capital · United States · Zitara, CivilGrid, Project Canary | 4 | 19 | Nov 2026 |
 Multimodal VenturesVenture capital · Discovered Materials, Conductor Quantum, Jeevy Fabrication | 4 | 19 | Oct 2026 |
 Engine VenturesVenture capital · United States · Commonwealth Fusion Systems, Quaise Energy, Emvolon | 4 | 15 | Sep 2026 |
 Leonard Green & PartnersPrivate equity · United States · Pace Analytical, Cumming Group, Geostabilization International | 4 | 1 | Dec 2025 |
 Arlington Capital PartnersPrivate equity · United States · Parsons, NV5, Quantum Sky | 4 | – | – |
 EndeavorAccelerator · United States · OneSkin, Vescent, Circuit Clinical | 3 | 55 | Oct 2026 |
 NEAVenture capital · United States · IonQ, TAE Technologies, SetPoint Medical | 3 | 38 | Oct 2026 |
 Scribble VenturesVenture capital · United States · Panthalassa, Atmo, Bluecore Energy | 3 | 34 | Nov 2026 |
 Global BrainVenture capital · Japan · REGENT, Commonwealth Fusion Systems, Numat Technologies# Materials# North America | 3 | 32 | Oct 2026 |
 Union Square VenturesVenture capital · United States · Remora, Lithoscarbon, Sofar Ocean | 3 | 21 | Oct 2026 |
 MaC Venture CapitalVenture capital · United States · Standard Subsea, Haiqu, Bluecore Energy | 3 | 19 | Oct 2026 |
 Cisco InvestmentsVenture capital · United States · Control4, 2026 Aliro Technologies, Inc., Dipole Labs | 3 | 19 | Sep 2026 |
 Point72 VenturesVenture capital · United States · REGENT, Endurance Energy, Antares Nuclear | 3 | 16 | Oct 2026 |
 Toba CapitalVenture capital · United States · Conductor Quantum, REGENT, Euclid Power | 3 | 10 | Oct 2026 |
 Elevate VenturesVenture capital · United States · University of Notre Dame, NearWave, Erickson Motors | 3 | 8 | Sep 2026 |
 Portland Seed FundAccelerator · United States · Onboarddynamics, Panthalassa, Photonmarine | 3 | 4 | Sep 2026 |
 Launch NYAccelerator · United States · Dimensional Energy, Circuit Clinical, Paradigm Emissions Tech | 3 | 4 | Jun 2026 |
 Katapult OceanVenture capital · Norway · Aquagga, Coral Vita, Gigablue | 3 | 4 | Sep 2026 |
 Spero VenturesVenture capital · United States · Euclid Power, Mast Reforestation, Clarity | 3 | 3 | Sep 2026 |
 Fine Structure VenturesVenture capital · Commonwealth Fusion Systems, Quaise Energy, Sepion Technologies, Inc. | 3 | 3 | Sep 2026 |
 Propagator VenturesVenture capital · Kebotix, Zapata Quantum, Metal Mark | 3 | 2 | Oct 2026 |
 Streamlined VenturesVenture capital · United States · Blackrock Neurotech, Rigetti Computing, Panthalassa | 3 | 1 | May 2026 |
 JLL PartnersPrivate equity · United States · Secretariat, Jonathan Engineered Solutions, CAI | 3 | – | – |
The most backed startups in the United States
Rigetti Computing
Commonwealth Fusion Systems
REGENT
Panthalassa
Living Carbon
PsiQuantum
Atmo
Remora
Helion Energy
Pacific Fusion
BurnBot
Cyngn
Endurance Energy
Discovered Materials
Sila Nanotechnologies, Inc.By country
More on startups in the United States
Raising a round?
Tell us about your startup once: Alion matches it to the investors that back companies like it and tells you when a fund starts backing startups in the United States.
Questions
Who invests in deep tech startups in the United States?
100 investors hold two or more deep tech startups in the United States each, 215 portfolio startups in all. The most active here are Techstars (31), Y Combinator (23) and Plug and Play (15). 15 of them are accelerators.
How is this list built?
From what each investor holds: the portfolio page it publishes, the Y Combinator directory and the announced rounds that name it. An investor counts for United States when at least two of its portfolio companies are based there; the list is rebuilt every night from 2,418 portfolios.
Source: investors' portfolio pages and announced rounds, 2,418 portfoliosUpdated 12 Nov 2026MethodologyJSONCC BY-SA 4.0