All Industries

Top Deep Tech Companies

329 Deep Tech companies, sorted by total funding raised.

329

Companies

$13.5B

Combined Funding

21

Funded (Last 60d)

Seed

Top Stage

Indexed tracks 329 Deep Tech companies that have collectively raised $13.5B in documented funding. The most-funded deep tech companies tracked include TAE Technologies and Sila Nanotechnologies. 21 companies closed a new round in the last 60 days, with Seed being the most common funding stage.

TAE Technologies

Fusion energy company developing clean energy solutions.

Foothill Ranch, United States201–500Energy, Deep Tech
Corporate Round·$1.5B·Dec 2025
Sila Nanotechnologies

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

Alameda, United States201–500Advanced Manufacturing, Deep Tech
Series G+·$1.2B·Jun 2024
Nearfield

Dutch deep-tech semiconductor company specializing in advanced chip manufacturing technology.

Rotterdam, Netherlands51–200Deep Tech, Semiconductors
Venture Round·$885.2M·Jun 2026
Sunfire

Manufactures industrial electrolyzers producing green hydrogen and syngas for heavy industries an...

Dresden, Germany501–1000Clean Energy, Hardware
Growth Equity·$788.5M·Jul 2025
Oxford Quantum Circuits

UK company building and deploying superconducting quantum computers.

Oxford, United Kingdom51–200Deep Tech, Quantum Computing
Series C·$539.8M·Jun 2026
Boston Metal

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

Boston, United States201–500Climate Tech, Manufacturing
Convertible·$505.0M·Jul 2025
Radiant

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

El Segundo, United States51–200Nuclear Energy, Clean Energy
Series D·$465.0M·Dec 2025
Inertia

Inertia is a commercial fusion energy company.

Livermore, United States11–50Clean Energy, Deep Tech
Series A·$450.0M·Feb 2026
Hyperloop OneClosed

High-speed transportation company developing vacuum tube travel technology

Los Angeles, United States201–500Deep Tech, Transportation
Venture Round·$449.0M·May 2019
Zap Energy

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

Everett, United States51–200Nuclear Fusion, Clean Energy
Series D·$324.0M·Sep 2024
Quobly

French quantum computing startup using silicon semiconductor manufacturing.

Grenoble, France51–200Deep Tech, Quantum Computing
Series A·$288.0M·Jun 2026
Atom Computing

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

Berkeley, United States51–200Deep Tech, Hardware
Series C·$283.0M·Jun 2026
XPANCEO

Deep tech company developing smart contact lens computing platform.

Dubai, United Arab Emirates51–200Deep Tech, Hardware
Series A·$250.0M·Jul 2025
XanaduIPO

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

Toronto, Canada201–500Deep Tech, Quantum Computing
Series C·$241.0M·Nov 2022
QuEra

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

Boston, United States51–200Deep Tech, Hardware
Venture Round·$230.0M·Feb 2025
Starcloud

Data centers in space

Redmond, United States1–10Cloud, Space Tech
Venture Round·$217.9M·May 2026
xLight

Extreme ultraviolet light source for advanced semiconductor creation

Palo Alto, United States11–50Deep Tech, Hardware
Grant·$201.6M·Jun 2026
Proxima Fusion

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

Munich, Germany51–200Clean Energy, Deep Tech
Series A·$193.7M·Sep 2025
Kepler

Distributed computing that harnesses the power of multiple nodes to augment computational power

Moraga, United States51–200Artificial Intelligence, Deep Tech
Series B·$175.6M·Oct 2023
Marvel Fusion

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

Munich, Germany51–200Deep Tech, Energy
Series B·$172.8M·Mar 2025
SpinQ

Chinese quantum computing company with commercial applications.

Shenzhen, China51–200Quantum Computing, Deep Tech
Series C·$152.0M·Apr 2026
ZutaCore

Zuta-Core develops a vacuum-based cooling device for electronic components.

Tokyo, Israel51–200Deep Tech, Energy
Series C·$148.0M·Jun 2026
Tokamak Energy

Fusion energy startup developing compact tokamak reactors and high-temperature superconducting ma...

Abingdon, United Kingdom201–500Deep Tech, Energy
Venture Round·$125.0M·Nov 2024
Syzygy Plasmonics

Builds light-powered reactor systems to produce sustainable fuels, hydrogen, and chemicals for in...

Houston, United States11–50Climate Tech, Deep Tech
Series C·$104.8M·Nov 2022
Kitty HawkClosed

Electric vertical takeoff and landing aircraft company backed by Larry Page

Palo Alto, United States201–500Autonomous Vehicles, Deep Tech
Venture Round·$101.0M·Sep 2022

Frequently Asked Questions

How many Deep Tech companies are tracked on Indexed?

Indexed tracks 329 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 $13.5B in documented funding.

What are the top-funded Deep Tech companies?

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

Who are the top investors in Deep Tech?

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

Explore More

Other Industries