Investors / United States / Triatomic Capital
Triatomic Capital
Venture capital · Palo Alto, CA, United States · North America
Triatomic Capital is a research-driven venture firm that invests in transformative technology companies from their earliest stages. It is headquartered in Palo Alto with a global investment mandate and writes $10–20M initial checks, leading or following.
Invests inAI & Machine LearningHealthcare & BiotechSpace & Defense
In its own wordsdeep techhealthcarelife sciencestechnologyresearch-driven
Your fit with Triatomic Capital
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsTriatomic Capital lists 15 checked portfolio companies on its own site and is named in 13 funding rounds, 5 of them as lead. Its most frequent entry is Series A, 50% of the companies with a known first round. Its largest themes are AI & Machine Learning (35%), Healthcare & Biotech (23%) and Space & Defense (15%). 85% of its companies are based in United States. It invests most often alongside 8VC, Abstract and Advaita Capital.
Counts come from funding rounds that name Triatomic Capital, complete from mid-2025: earlier rounds appear only when they were reported later. Round amounts and full round histories are on Fundup AI.
Entry stage
share of companies by the stage of its first roundShow as a table
| Value | |
|---|---|
| Pre-seed | 0% |
| Seed | 10% |
| Series A | 50% |
| Series B | 30% |
| Growth | 10% |
Activity by year
rounds it joined, last 10 yearsShow as a table
| Total | Rounds it led | |
|---|---|---|
| '17 | 0 | 0 |
| '18 | 0 | 0 |
| '19 | 0 | 0 |
| '20 | 0 | 0 |
| '21 | 0 | 0 |
| '22 | 0 | 0 |
| '23 | 0 | 0 |
| '24 | 1 | 1 |
| '25 | 5 | 3 |
| '26 | 7 | 1 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 42th | 16 companies |
| Recent activity | 93th | 8 rounds in 12 months |
| Early stage | 55th | 10% of entries at pre-seed or seed |
| Evidence | 99th | 44% of companies confirmed by a round |
| Sector focus | 63th | 35% in its largest sector |
| Reach | 58th | 3 countries |
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| AI & Machine Learning | 35% | 18% |
| Healthcare & Biotech | 23% | 15% |
| Space & Defense | 15% | 3% |
| Robotics & Hardware | 12% | 1% |
| Industrial & Manufacturing | 4% | 7% |
| Education | 4% | 7% |
| Enterprise Software | 4% | 8% |
| Cybersecurity | 4% | 4% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| 8VC | 2 |
| Abstract | 2 |
| Advaita Capital | 2 |
| Alix Ventures | 2 |
| Andreessen Horowitz | 2 |
| Capital Factory | 2 |
| Eclipse | 2 |
| IQT | 2 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers15100%
- No longer answers00%
- Points to another company00%
- Parked or sold domain00%
A site that stops answering three checks in a row is counted as no longer answering; that is not proof of closure. A site that points to another company is often an acquisition.
Co-investor network
who it backs companies with, and who they back togetherCompare Triatomic Capital head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Recent portfolio activity
when companies last raised with Triatomic Capital| Date | Company | Stage |
|---|---|---|
| 1 Oct 2026 | Series A | |
| 4 Sept 2026 | Series B | |
| 7 Aug 2026 | Series C+ | |
| 15 Jun 2026 | Seed | |
| 13 Mar 2026 | Series A | |
| 20 Feb 2026 | Series A Led | |
| 12 Nov 2025 | Series C+ | |
| 21 Oct 2025 | Series B |
Round details for Triatomic Capital
Amounts, full round histories and every co-investor in Triatomic Capital's rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
15 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Atum Works is building a scalable 3D lithography foundry that can print arbitrary 3D metal structures with submicron resolution. | Industrial & Manufacturing | Portfolio page | ||
| Axiom does mathematical research and publishes papers and formalizations. | EducationRobotics & Hardware | Mar 2026Series A | Page + round | |
| Chalk provides a platform for production AI, allowing users to ship and manage AI agents and models without infrastructure management. | AI & Machine LearningSpace & Defense | Portfolio page | ||
| Chemify digitizes molecule creation using chemistry, robotics, computation, machine learning and a programming language | Robotics & HardwareHealthcare & Biotech | Oct 2025Series B | Page + round | |
| Coworker develops and provides enterprise AI agents for various tasks | AI & Machine LearningEnterprise Software | Portfolio page | ||
| d-Matrix develops and manufactures memory-centric compute technology for AI inference | AI & Machine LearningSpace & Defense | Nov 2025Series C+ | Page + round | |
| Edison Scientific develops an AI platform for scientific research and development, particularly in the field of medicine and drug development. | Healthcare & BiotechAI & Machine Learning | Portfolio page | ||
| Efficient Computer designs and manufactures energy-efficient AI chips for edge devices and embedded systems | AI & Machine LearningSpace & Defense | Feb 2026Series A · 2 rounds | Page + round | |
| Elegen produces DNA using cell-free gene synthesis technology | Healthcare & Biotech | May 2024Series B | Page + round | |
| Gimlet provides serverless inference for AI agents and conducts research on AI systems and workload optimization. | AI & Machine LearningCybersecurity | Sept 2026Series B | Page + round | |
| Portfolio page | ||||
| Manifold Bio designs and develops tissue-targeted medicines using a combination of AI-powered design and in vivo testing | Healthcare & Biotech | Portfolio page | ||
| MatX develops high-throughput chips for large language models | AI & Machine LearningSpace & Defense | Portfolio page | ||
| Radical Numerics is a next-generation AI lab building toward general biological intelligence | Healthcare & BiotechAI & Machine Learning | Jun 2026Seed | Page + round | |
| Volantis develops photonic AI infrastructure for model inference | AI & Machine LearningRobotics & Hardware | Oct 2026Series A | Funding round |
About this data
site last read 12 Nov 2026- Site
- triatomic.ai
- Last read
- 12 Nov 2026
- Watching since
- 5 Nov 2026
- Rounds since
- 14 May 2024
- Companies checked
- 15
Rates come from what VCinfo has observed since observation_start. Firms tend to remove companies that closed, so early rates understate reality. A company leaving a portfolio page does not mean it closed or exited. An unreachable site means our checks failed, nothing more.
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