Defense tech investors: who actually funds defence and space
This is the sector where the customer changes everything. Your buyer is a government with a procurement cycle measured in years, a budget set by politics, and rules about who may own you. That reshapes the cap table, the timeline and the kind of investor who can help. It is also the fastest-growing corner of venture right now, which means a lot of newcomers are learning those rules in public.
Reviewed Full-year 2025
The state of defence and space investment
The growth is real and the concentration is extreme. Funding sat between roughly $2.8bn and $3.8bn from 2022 through 2024 before jumping to $9.6bn in 2025. But a handful of companies took much of it: Anduril raised a $5bn Series H at a $30.5bn valuation, Shield AI $2bn and Saronic $1.75bn. For a seed-stage founder the relevant figure is the 206 rounds, not the headline total.
The four kinds of defence and space investor
A fund tagged "defence" or "space" sits in one of four columns here. What separates them is how much hardware risk they will carry and whether they can wait for a government procurement cycle.
| Space infrastructure | Defence hardware & autonomy | Dual-use software | Components & subsystems | |
|---|---|---|---|---|
| Typical entry stage | Seed to Series A | Seed, then very large | Pre-seed to Series A | Pre-seed to Series A |
| Cheque shape | Venture, then project and debt finance | Venture plus government programme funding | Ordinary venture | Ordinary venture, sometimes with grants |
| Wants to see | A launch manifest or an anchor customer | A working prototype and a programme of record to target | A commercial market as well as a defence one | A qualified part and a prime willing to design it in |
| Time to revenue | 3-6 years | 2-5 years, gated by procurement | 12-24 months | 2-4 years, gated by qualification |
| Biggest risk they underwrite | Launch failure and capital intensity | The programme is cancelled or delayed | That the government buyer never materialises | Qualification failure, or a prime changing supplier |
| Who else must be in the round | A strategic prime or infrastructure capital | An investor cleared to hold defence equity | Nobody in particular | A strategic prime, eventually |
Defence and space investors, grouped by the cheque they write
Defence and space investors we hold in the Causo catalogue. This sector is smaller than the others on this site, so these are three groups rather than four. This is not every defence tech investor in the market, and no catalogue is.
Defence and space specialists
Firms whose mandate is space, defence or national security, several founded by operators from those worlds.
Early stage and hard tech
Firms that write the first cheque and tolerate hardware risk before there is a contract.
Later stage, strategic and corporate
Firms that lead once there is a contract, plus balance sheets whose parent is a prime or operator.
What defence tech investors need to see
The gates that are specific to this sector, and that a generalist fundraising guide will not tell you about.
- Name the programme you are aiming atGovernment revenue arrives through a specific programme, contract vehicle or budget line. Investors in this sector expect you to name it, know its cycle and know who owns it. "The defence market is enormous" is not a go-to-market.
- Understand who is allowed to own youForeign ownership, control and influence rules constrain your cap table in ways no other sector faces. Taking money from the wrong investor can disqualify you from the contracts you are building towards. Raise this early rather than discovering it in diligence.
- Be realistic about the procurement clockPilots, prototypes and programmes of record run on timelines measured in years. A plan that assumes commercial sales velocity against a government buyer will not survive contact, and experienced investors discount it immediately.
- Have a dual-use answer, or explain why notA commercial market alongside the defence one de-risks the timeline and widens the investor pool considerably. If your product is genuinely defence-only, say so plainly and target the funds that are set up for it rather than pitching generalists.
- Show hardware milestones, not rendersFor anything that flies or floats, investors want test data, integration milestones and evidence you can manufacture. Renders and simulations are the weakest possible evidence in a sector where physical failure is the main risk.
Where a defence tech investor’s real track record is published
- USAspending and government contract award notices
- SAM.gov entity registrations
- SBIR and STTR award databases
- FCC and ITU spectrum and satellite filings
- Launch manifests and mission records
- Patent filings
- Funding announcements
- Fund portfolio pages and partner talks
- Why award databases matter more here than elsewhereGovernment awards are published by law, with the recipient, the amount and the programme named. A company’s SBIR history and contract record show what it has actually been paid to build, years before any of it appears in a press release.
Reading one defence tech investor’s actual record
One worked example of what reading those sources produces, from the Causo catalogue with the identity removed.
A fund whose mandate is space and the technologies that depend on it, with a record spanning launch, satellite infrastructure and downstream data. Entry is at seed and Series A, and the portfolio pattern shows repeat participation in the same companies rather than one-off cheques.
Questions founders ask about defence tech investors
Who are the main defence tech investors?
Sector specialists include Seraphim Capital in space, Scout Ventures, AIN Ventures, Harpoon Ventures, Paladin Capital Group and Riot Ventures. Founders Fund is the most prominent generalist with a deep defence record. Airbus Ventures invests strategically from a prime’s balance sheet. Which is relevant depends heavily on whether you are space, hardware or dual-use software.
How much venture funding does defence tech get?
Defence tech startups raised a record $9.6bn across 206 venture rounds in 2025, up from $1.6bn in 2020 and from a range of roughly $2.8bn to $3.8bn between 2022 and 2024. It is among the fastest-growing categories in venture.
Is defence tech funding concentrated in a few companies?
Heavily. Anduril raised a $5bn Series H at a $30.5bn valuation, Shield AI raised $2bn and Saronic $1.75bn, which together account for a large share of the 2025 total. The number that matters more for an early-stage founder is that 206 rounds were announced, so there is real activity below the megadeals.
Can I raise for defence tech without a government contract?
Yes at pre-seed and seed, where investors fund a team and a prototype against a named programme. What you cannot do is raise without a credible account of which programme, which budget line and which timeline. Specialist funds will interrogate that in the first meeting.
Does taking foreign investment hurt a defence startup?
It can genuinely disqualify you. Foreign ownership, control and influence rules limit who may hold equity in companies handling sensitive contracts, and the constraint applies to the cap table rather than just the board. This is the one sector where the identity of your investor can matter more than the terms.
What is dual-use and why do investors like it?
Dual-use means the product has a commercial market as well as a defence one. Investors like it because commercial revenue can carry the company through procurement cycles that would otherwise starve it, and because it widens the eventual buyer pool. It also makes the company fundable by generalists who will not touch defence-only businesses.