Deep tech investors: who actually funds hard technology
Deep tech inverts the usual order. In software you find a market and then build; here you retire a physics or biology risk first, and only then discover whether anyone will pay. That inversion is why generalist funds struggle with it, why the timelines are longer, and why the investors who do this well look and behave differently from the rest of venture.
Reviewed 2024 and 2025
The state of deep tech investment
The resilience number is the interesting one. European deep tech funding fell only about 28% from its 2021 peak while overall European tech venture fell roughly 60%, which is the opposite of what most founders assume about hard technology in a downturn. Deep tech is now the largest single category in European venture by funding, with the UK, France and Germany the largest markets at roughly $4.2bn, $3.0bn and $2.7bn.
The four kinds of deep tech investor
A fund tagged "deep tech" sits in one of four columns. What separates them is how much technical risk they will take before there is a working device, and whether they can fund the capital equipment that follows.
| Semiconductors & photonics | Advanced materials & manufacturing | Quantum & computing | Robotics & automation | |
|---|---|---|---|---|
| Typical entry stage | Seed, often out of a university lab | Seed to Series A | Seed, sometimes pre-publication | Seed to Series A |
| Cheque shape | Venture plus grants and tape-out costs | Venture, then project finance for a plant | Venture plus public and sovereign money | Venture, with capital for units |
| Wants to see | Working silicon or a credible tape-out plan | Performance at lab scale and a costed route to volume | A benchmark others can reproduce | A deployed pilot with a paying operator |
| Time to revenue | 3-6 years | 4-8 years | 5-10 years, if at all | 2-4 years |
| Biggest risk they underwrite | Yield, and an incumbent shipping first | That it cannot be made at scale or at cost | The science does not reach usefulness | Unit economics once you build real hardware |
| Who else must be in the round | A strategic foundry or chip partner | Industrial strategics and eventually infrastructure capital | Government and sovereign programmes | An industrial operator as first customer |
Deep tech investors, grouped by the cheque they write
Deep tech investors we hold in the Causo catalogue, grouped by the cheque they actually write. Open any of them to see the partners, the stage and the recent deals. This is not every deep tech investor in the market, and no catalogue is.
Deep tech specialists
Firms built for technical risk, several attached to labs or hardware accelerators.
Pre-seed and seed
Firms that will fund science before there is a device, several with university pipelines.
Series A and later
Firms that lead once the physics works and the question becomes manufacturing and cost.
Corporate and strategic
Industrial balance sheets whose parent is a plausible manufacturer, supplier or first customer.
What deep tech investors need to see
The gates that are specific to this sector, and that a generalist fundraising guide will not tell you about.
- State the technical risk you are retiring, and howDeep tech investors are buying a plan to remove a specific uncertainty. Name it precisely, say what experiment settles it, what it costs and how long it takes. Vagueness here is read as not knowing.
- Be honest about capex from the first meetingIf you will eventually need a fab, a line or a plant, say so early. Funds that cannot follow into capital-intensive rounds would rather know immediately, and the ones that can will want evidence you have thought about project finance before you need it.
- Show the cost curve, not just the performanceWorking in a lab is necessary and not sufficient. What decides fundability is a credible path from today’s unit cost to a competitive one, with the manufacturing steps and volumes that get you there.
- Use non-dilutive money and say that you haveGrants, sovereign programmes and public co-investment are a normal part of this sector’s capital stack rather than a sign of weakness. A track record of winning them is independent validation and extends runway that equity would otherwise buy.
- Bring an industrial partner earlier than feels comfortableA named strategic willing to test, qualify or co-develop is worth more than any projection. It also answers the question every deep tech investor is really asking, which is whether an industry actually wants this.
Where a deep tech investor’s real track record is published
- Patent filings and continuations
- Peer-reviewed papers and their author affiliations
- Grant awards from national research agencies
- Horizon Europe and Innovate UK records
- University spinout and technology transfer registers
- Standards body participation
- Funding announcements
- Fund portfolio pages and partner talks
- Why patents and papers matter more here than elsewhereDeep tech companies leave a dated scientific trail. Papers and patents show who was working on a problem, with whom, and when, often years before incorporation, which is the clearest way to tell a genuine technical team from a well-packaged one.
Reading one deep tech investor’s actual record
One worked example of what reading those sources produces, from the Causo catalogue with the identity removed.
A European fund whose mandate is technically hard companies rather than a named vertical, with a record spanning semiconductors, advanced materials and industrial software. Entry is at seed and Series A, and the portfolio pattern suggests a preference for university and research-institute origins.
Questions founders ask about deep tech investors
Who are the main deep tech investors?
Deep tech specialists include IQ Capital, HAX, OTB Ventures, MFV Partners, Elaia Partners and Pathbreaker Ventures, with ARCH Venture Partners and Breakthrough Energy Ventures active at the science-heavy end. Industrial corporate arms including Intel Capital, Qualcomm Ventures, Bosch Ventures, BASF Venture Capital and Airbus Ventures invest strategically and often become customers.
How much venture funding does deep tech get?
In Europe it is now the single largest venture category by funding, taking a record 28% of all European VC. About €15bn went into European deep tech in 2024, and the UK, France and Germany were the largest markets at roughly $4.2bn, $3.0bn and $2.7bn respectively.
Did deep tech funding fall as much as the rest of venture?
No, and this surprises most founders. European deep tech funding fell about 28% from its 2021 peak while overall European tech venture fell roughly 60%. Long-horizon technical investment proved considerably more resilient through the downturn than software did.
Do deep tech investors fund pre-revenue companies?
Almost by definition. The model assumes years between first cheque and first revenue, with milestones defined by technical progress rather than sales. What they will not fund is unresolved science with no experiment that would settle it and no cost path if it works.
How do deep tech companies handle capital intensity?
By combining sources. Venture equity funds the team and the technical milestones, non-dilutive grants and sovereign programmes fund research, and project or debt finance funds plant and equipment once the technology is proven. Founders who plan only for equity usually run into a wall at exactly the point the technology starts working.
Should I take money from an industrial corporate investor?
Often yes, because the parent is frequently your first customer, your manufacturing partner or your eventual acquirer, and that validation is hard to get elsewhere. The things to negotiate carefully are exclusivity, rights of first refusal and anything that would deter a competing strategic from working with you later.