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Top Deep Tech Companies

403 Deep Tech companies, sorted by total funding raised.

403

Companies

$18.2B

Combined Funding

4

Funded (Last 60d)

Seed

Top Stage

Indexed tracks 403 Deep Tech companies that have collectively raised $18.2B in documented funding. The most-funded deep tech companies tracked include TAE Technologies and Helion. 4 companies closed a new round in the last 60 days, with Seed being the most common funding stage.

TAE Technologies

TAE Technologies is a fusion power company developing the most sustainable and economically compe...

Foothill Ranch, United States201–500Energy, Deep Tech
Corporate RoundTotal funding$1.5BDec 2025
Helion

Nuclear fusion energy company building the world's first commercial fusion power plant; has a 50 ...

Everett, United States201–500Clean Energy, Climate Tech
Series G+Total funding$1.5BJun 2026
Sila Nanotechnologies

Develops and manufactures silicon-based anode materials and battery engineering services for EVs,...

Alameda, United States201–500Advanced Manufacturing, Deep Tech
Series G+Total funding$1.2BJun 2024
Proxima Fusion

Develops QI stellarators and designs fusion power plants, partnering with utilities and institute...

Munich, Germany51–200Clean Energy, Deep Tech
Growth EquityTotal funding$1.1BJul 2026
Sunfire

Sunfire supplies green-hydrogen projects with pressurized alkaline and solid oxide electrolyzers,...

Dresden, Germany501–1000Clean Energy, Hardware
Growth EquityTotal funding$788.5MJul 2025
Oxford Quantum Circuits

Oxford Quantum Circuits builds application-optimized quantum computers engineered to deliver busi...

Oxford, United Kingdom51–200Deep Tech, Quantum Computing
Series CTotal funding$539.8MJun 2026
Nearfield Instruments

Nearfield Instruments is a semiconductor metrology equipment company that develops process contro...

Rotterdam, Netherlands51–200Deep Tech, Semiconductors
Series DTotal funding$527.6MJun 2026
Boston Metal

Develops Molten Oxide Electrolysis to produce low-carbon steel and recover valuable metals from m...

Boston, United States201–500Climate Tech, Manufacturing
ConvertibleTotal funding$506.5MJul 2025
Starcloud

Starcloud builds scalable data center infrastructure in space, using solar energy and radiative c...

Redmond, United States1–10Cloud, Space Tech
Extension RoundTotal funding$477.9MAug 2026
Radiant

Clean energy startup developing portable nuclear microreactors as zero-emission alternatives to d...

El Segundo, United States51–200Nuclear Energy, Clean Energy
Series DTotal funding$467.4MDec 2025
DeepRoute

International self-driving vehicle startup researching and developing autonomous vehicles.

Shenzhen, China1001–5000Autonomous Vehicles, Deep Tech
Series CTotal funding$450.0MNov 2024
Inertia

Inertia is developing commercial fusion power through modular high-power lasers, mass-manufacture...

Livermore, United States11–50Clean Energy, Deep Tech
Series ATotal funding$450.0MFeb 2026
Hyperloop OneClosed

High-speed transportation company developing vacuum tube travel technology

Los Angeles, United States201–500Deep Tech, Transportation
Venture RoundTotal funding$449.0MMay 2019
Zap Energy

Nuclear fusion energy company developing compact, low-cost fusion reactors using sheared-flow-sta...

Everett, United States51–200Clean Energy, Deep Tech
Series DTotal funding$324.0MSep 2024
XPANCEO

XPANCEO develops ultra-thin smart contact lenses that combine extended reality and health monitor...

Dubai, United Arab Emirates51–200Deep Tech, Hardware
Series ATotal funding$290.0MJul 2025
Quobly

Quobly builds silicon-based quantum processors on proven semiconductor infrastructure, transformi...

Grenoble, France51–200Deep Tech, Quantum Computing
Series ATotal funding$288.0MJun 2026
Atom Computing

Quantum computing company building highly scalable, gate-based quantum computers using arrays of ...

Berkeley, United States51–200Deep Tech, Hardware
Series CTotal funding$283.8MJun 2026
XanaduIPO

Photonic quantum computing company building quantum computers using light-based technology, with ...

Toronto, Canada201–500Deep Tech, Quantum Computing
Series CTotal funding$241.0MNov 2022
QuEra

QuEra Computing builds neutral-atom quantum computers, offering cloud and on-premises access to i...

Boston, United States51–200Deep Tech, Hardware
GrantTotal funding$235.4MJul 2025
Exodigo

Exodigo is a technology innovator combining the power of proprietary advances in 3D imaging, sens...

Tel Aviv, Israel201–500Deep Tech, Artificial Intelligence
Series BTotal funding$230.0MJul 2025
Windrose

Windrose is an Antwerp-based manufacturer of long-haul, heavy-duty electric trucks with 800V arch...

Stanford, ChinaDeep Tech, Electric Vehicles
Venture RoundTotal funding$210.0MFeb 2026
xLight

xLight is building the world's most powerful Free Electron Lasers (FELs) to replace LPP and revol...

Palo Alto, United States11–50Deep Tech, Hardware
GrantTotal funding$201.6MJun 2026
Marvel Fusion

Munich-based fusion energy company developing laser-driven inertial fusion power plants for indus...

Munich, Germany51–200Deep Tech, Energy
Series BTotal funding$172.8MMar 2025
SpinQ

SpinQ designs superconducting and NMR quantum computers, cloud platforms, and software that indus...

Shenzhen, China51–200Quantum Computing, Deep Tech
Series CTotal funding$152.0MApr 2026
Ipronics

EU-funded DeepTech startup

11–50Deep Tech
Series BTotal funding$150.8MSep 2026

Frequently Asked Questions

How many Deep Tech companies are tracked on Indexed?

Indexed tracks 403 Deep Tech companies, sorted by total funding raised.

How much funding have Deep Tech companies raised in total?

The Deep Tech companies tracked by Indexed have collectively raised $18.2B in documented funding.

What are the top-funded Deep Tech companies?

The most-funded Deep Tech companies tracked include TAE Technologies, Helion, Sila Nanotechnologies.

Who are the top investors in Deep Tech?

Leading investors active in Deep Tech include Techstars, Antler, Plug and Play.

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