17 seed quantum investors in the US
We list 17 seed quantum investors in the US as of November 2026: each has an SEC filing on file, and the list was last checked on 6 Nov 2026. The cities with the most head offices on this list are Austin (2), Mclean (1) and San Mateo (1).
Top 5 seed quantum investors in the US, ranked by recent fund activity
Among firms with a published profile and a dated fund or deal in the last 24 months. The rule: Activity score out of 100: recency of the latest fund filing or dated deal (30: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (20; half of that when the sector is stated only), stage focus (15: all of it when seed is the only stage the firm states, split evenly when it states more), stated focus on the US (15: full marks when the firm names the US as where it invests, half when it says global), size of the fund on file on a log scale (12) and completeness of the public record (8). Stage and regional focus are our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns. The same rule orders the whole list; it is repeated in the method box.
Scout Ventures
Type: VC firm · HQ: Austin, TX · Stages: Seed · Focus: Quantum, Defense Tech, AI, Deep Tech · Latest activity: New deal, May 2026 · Fund size on file: $125M (SEC Form D, 2022)
Dated new deal in May 2026; $125M fund on file (SEC Form D, 2022); states quantum technology as a focus; backs seed; names the US as where it invests; 8 named decision-makers on file.
Lavrock Ventures
Type: VC firm · HQ: Mclean, VA · Stages: Seed · Focus: Quantum, Cybersecurity, Defense Tech, Space · Latest activity: New deal, Aug 2026 · Fund size on file: $125M (SEC Form D, 2025)
Dated new deal in Aug 2026; $125M fund on file (SEC Form D, 2025); states quantum technology as a focus; backs seed; 8 named decision-makers on file.
Phoenix Venture Partners
Type: VC firm · HQ: San Mateo, CA · Stages: Seed · Focus: Quantum, AI, Healthtech, Energy · Latest activity: Portfolio news, Jul 2026 · Fund size on file: $109M (SEC Form D, 2021)
Portfolio news dated Jul 2026; $109M fund on file (SEC Form D, 2021); states quantum technology as a focus; backs seed; 8 named decision-makers on file.
Qubits Ventures
Type: VC firm · HQ: Pasadena, CA · Stages: Seed · Focus: Quantum, AI, Deep Tech · Latest activity: New fund, Oct 2026 · Fund size on file: $50M (SEC Form D, 2025)
Latest fund filing dated Oct 2026; $50M fund on file (SEC Form D, 2025); states quantum technology as a focus; backs seed; 8 named decision-makers on file.
Outcurve
Type: VC firm · HQ: Washington, DC · Stages: Seed · Focus: Quantum, AI, Industrial Tech, Deep Tech · Latest activity: New fund, Sep 2026
Latest fund filing dated Sep 2026; states quantum technology as a focus; backs seed; 3 named decision-makers on file.
First 10 of 17 seed quantum investors in the US
| Investor | Type | HQ | Stagesour research | Focusour research | Latest fund or deal | Fund sizeas filed or stated | Checked | Contacts |
|---|---|---|---|---|---|---|---|---|
| Scout Ventures | VC firm | Austin, TX | Seed | Quantum, Defense Tech, AI, Deep Tech | New deal, May 2026 | $125M (SEC Form D, 2022) | 4 Nov 2026 | 8 names · Unlock |
| Lavrock Ventures | VC firm | Mclean, VA | Seed | Quantum, Cybersecurity, Defense Tech, Space | New deal, Aug 2026 | $125M (SEC Form D, 2025) | 5 Nov 2026 | 8 names, firm email · Unlock |
| Phoenix Venture Partners | VC firm | San Mateo, CA | Seed | Quantum, AI, Healthtech, Energy | Portfolio news, Jul 2026 | $109M (SEC Form D, 2021) | 5 Nov 2026 | 8 names · Unlock |
| Qubits Ventures | VC firm | Pasadena, CA | Seed | Quantum, AI, Deep Tech | New fund, Oct 2026 | $50M (SEC Form D, 2025) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Outcurve | VC firm | Washington, DC | Seed | Quantum, AI, Industrial Tech, Deep Tech | New fund, Sep 2026 | 4 Nov 2026 | 3 names · Unlock | |
| Parallel Venture Capital | VC firm | Boston, MA | Pre-seed, Seed | Quantum, Defense Tech, AI, Cybersecurity | New fund, Mar 2026 | $25M (SEC Form D, 2025) | 4 Nov 2026 | 4 names · Unlock |
| Raisewell Ventures | VC firm | Berkeley, CA | Seed | Quantum, AI, Healthtech, Robotics | New fund, Jul 2025 | $32M (SEC Form D, 2024) | 4 Nov 2026 | 1 name · Unlock |
| NextVerse Ventures | VC firm | Saratoga, CA | Seed | Quantum, AI, Deep Tech | New fund, Oct 2025 | $12M (SEC Form D, 2025) | 4 Nov 2026 | 2 names · Unlock |
| Cerberus Ventures | VC firm | New York, NY | Pre-seed, Seed, Series A, Series B | Quantum, AI, Industrial Tech, Energy | New fund, Jun 2026 | $75M (SEC Form D, 2024) | 4 Nov 2026 | 8 names · Unlock |
| Morpheus Ventures | VC firm | Sherman Oaks, CA | Seed | Quantum, AI, Developer Tools, Deep Tech | New fund, Dec 2024 | $150M (SEC Form D, 2023) | 5 Nov 2026 | 8 names · Unlock |
You are seeing 10 of 17. The full list adds 7 more investors and 80 named decision-makers.
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How these 17 break down
By US state
| US state | On this list | Share |
|---|---|---|
| California | 8 | 47% |
| Texas | 2 | 12% |
| New Jersey | 2 | 12% |
Method and limits
- Source
- All 17 rows carry an SEC filing (Form D or Form ADV). All 17 have a website we checked. Filing date and fund size are SEC data where a filing exists. Stage, sector and check size are our research.
- Inclusion rule
- Organizations that back startups. Individuals, buyout funds and firms we found to be inactive are left out. Sector: the firm states quantum technology as a focus on its own site, or we observed it in the firm's portfolio. Stage: the firm states that it invests at seed.
- Order
- Firms with a published profile come first. Activity score out of 100: recency of the latest fund filing or dated deal (30: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (20; half of that when the sector is stated only), stage focus (15: all of it when seed is the only stage the firm states, split evenly when it states more), stated focus on the US (15: full marks when the firm names the US as where it invests, half when it says global), size of the fund on file on a log scale (12) and completeness of the public record (8). Stage and regional focus are our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns.
- Last refreshed
- November 2026. Rows on this list were checked between 4 Nov 2026 and 6 Nov 2026.
- Fill rates
- Of 17 rows: stage 17, sector 17, fund size 15, website 17. In the paid file: named decision-makers on 17 rows, firm email on 4, LinkedIn page on 4, check size on 2.
- Corrections
- Email hello@theinvestordatabase.com or use the update form. We act within 5 working days.
Questions
How many seed quantum investors in the US are there?
We list 17 as of November 2026. 9 of the 17 have a fund filing or a dated deal in the last 12 months. The cities with the most are Austin (2), Mclean (1) and San Mateo (1).
Which seed quantum investors in the US raised a new fund in the last 12 months?
5 of the 17 have a fund filing dated in the last 12 months. The most recent on this list are Qubits Ventures (Oct 2026), Outcurve (Sep 2026) and Cerberus Ventures (Jun 2026).
What is the typical fund size of seed quantum investors in the US?
The median fund size on file for this list is $50M, across the 15 firms with a size on an SEC Form D. The fund on file is each firm's main fund, which is not always its newest. The other 2 do not disclose a size there.
How do I contact seed quantum investors in the US?
The paid file holds 80 named decision-makers across 17 of these 17 and a firm email for 4. We publish the address a firm lists itself, never a personal email. Each free row links to a profile with the firm's website.
Where does the data on seed quantum investors in the US come from?
All 17 rows have an SEC filing on file (Form D or Form ADV). Filing date and fund size come from the filing. Stage, sector and check size are our research. Rows on this list were last checked on 6 Nov 2026 at the latest. The whole file is re-verified twice a year.
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