Investors / United States / Fathom Fund
Fathom Fund
Venture capital · Houston, TX, United States · North America
Fathom Fund is a venture firm that provides venture assistance for breakthrough innovation, helping technical and deep tech founders build companies. It conducts technical diligence and invests primarily in technology platforms at the pre-commercialization or early commercialization phase.
Invests inAI & Machine LearningSpace & DefenseIndustrial & Manufacturing
In its own wordsdeep techartificial intelligencedecarbonizationadvanced materialsspacedual-use
Your fit with Fathom Fund
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsFathom Fund lists 10 checked portfolio companies on its own site. Its largest themes are AI & Machine Learning (42%), Space & Defense (16%) and Industrial & Manufacturing (16%). 88% of its companies are based in United States. It invests most often alongside IQT, Catapult Ventures and Lux Capital.
No funding round on record names Fathom Fund yet, so the figures come from its portfolio page.
Round figures show recent activity, not Fathom Fund's whole history. Rounds on record name 0 companies; its own site lists 10. Funding rounds are complete from mid-2025, so counts and the yearly trend undercount a firm that invested before then. The portfolio, themes and places come from its own site and are not affected.
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| AI & Machine Learning | 42% | 18% |
| Space & Defense | 16% | 3% |
| Industrial & Manufacturing | 16% | 7% |
| Robotics & Hardware | 11% | 1% |
| Cybersecurity | 5% | 4% |
| Climate & Energy | 5% | 1% |
| Healthcare & Biotech | 5% | 15% |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers10100%
- 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.
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 23th | 10 companies |
| Recent activity | 46th | 0 rounds in 12 months |
| Early stage | 54th | 0% of entries at pre-seed or seed |
| Evidence | 52th | 0% of companies confirmed by a round |
| Sector focus | 76th | 42% in its largest sector |
| Reach | 42th | 2 countries |
Co-investor network
who it backs companies with, and who they back togetherCompare Fathom Fund head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Portfolio
10 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| ElectraLith extracts and refines lithium using its DLE-R technology | Industrial & ManufacturingClimate & Energy | Portfolio page | ||
| Eridu AI develops networking technology for artificial intelligence applications | AI & Machine LearningCybersecurity | Portfolio page | ||
| The company develops and produces cutting-edge composite materials for high temperature and nano-engineered structures, particularly in the automotive and aerospace industries. | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Kandou develops and provides AI infrastructure products, including USB4 and PCIe retimers, switches, and chiplet interconnect IP solutions. | AI & Machine LearningSpace & Defense | Portfolio page | ||
| Mythic develops and manufactures artificial intelligence products, including analog processing units and AI platforms, for various industries such as automotive, robotics, and enterprise. | AI & Machine LearningSpace & Defense | Portfolio page | ||
| NovoLINC develops and manufactures thermal interface materials for electronic chipsets | Industrial & ManufacturingHealthcare & Biotech | Portfolio page | ||
| Nullspace develops and provides electromagnetic simulation software for real systems | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| The company develops and manufactures advanced space systems for connecting, observing, and operating. | Space & Defense | Portfolio page | ||
| Persona AI develops industrial humanoid robots designed for real work environments such as shipyards, construction sites, and energy infrastructure. | Robotics & HardwareIndustrial & Manufacturing | Portfolio page | ||
| Xscape Photonics develops custom silicon photonics solutions to solve bandwidth bottlenecks in A.I. clusters. | AI & Machine LearningRobotics & Hardware | Portfolio page |
About this data
site last read 10 Nov 2026- Site
- ff.vc
- Last read
- 10 Nov 2026
- Watching since
- 7 Nov 2026
- Companies checked
- 10
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.
Get Fathom Fund's profile as data
Pull Fathom Fund's portfolio, co-investors and changes through one API key or MCP, open every portfolio row, compare it with other firms, and get an email when it adds a company or files a fund.
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- Full listsEvery portfolio row and two-firm overlap
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- AlertsFollow 5 investors for portfolio and fund changes
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