Investors / Worldbuild
Worldbuild
Venture capital
Worldbuild is a thesis-driven investment firm that partners with creative technologists. Its portfolio includes companies such as The San Francisco Compute Company, Browserbase, Cowboy Space Corp, Truffle, Fractal Power, Spinor, Interfere, Flower Computer, Armory Medical, and Actual Computer.
Invests inAI & Machine Learning
In its own wordscreative technologistsdeep techcomputespacehardwarehealth
Your fit with Worldbuild
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsWorldbuild lists 9 checked portfolio companies on its own site. Its largest themes are AI & Machine Learning (29%), Fintech (12%) and Space & Defense (12%). 100% of its companies are based in United States. It invests most often alongside AI Grant, Andreessen Horowitz and Audeo Capital.
No funding round on record names Worldbuild yet, so the figures come from its portfolio page.
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| AI & Machine Learning | 29% | 18% |
| Fintech | 12% | 12% |
| Space & Defense | 12% | 3% |
| Cybersecurity | 12% | 4% |
| Healthcare & Biotech | 12% | 15% |
| Consumer | 6% | 3% |
| Education | 6% | 7% |
| Other | 6% | 0% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| AI Grant | 1 |
| Andreessen Horowitz | 1 |
| Audeo Capital | 1 |
| Base Case Capital | 1 |
| Blossom Capital | 1 |
| Brave Capital | 1 |
| Breakthrough Energy Ventures | 1 |
| CRV | 1 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 19th | 9 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 | 50th | 29% in its largest sector |
| Reach | 19th | 1 country |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers9100%
- 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 Worldbuild head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Portfolio
9 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Actual Computer provides private AI inference on users' own hardware through AI agents and a confidential relay API | AI & Machine LearningCybersecurity | Portfolio page | ||
| Armory is building the execution layer for American healthcare, infrastructure that absorbs the entirety of work that stands between patients and care. | Healthcare & Biotech | Portfolio page | ||
| Athanor develops and produces specialty nitrogen chemicals, starting with defense-critical materials | Industrial & ManufacturingAI & Machine Learning | Portfolio page | ||
| Browserbase provides a platform for agents to use the web, including cloud browsers, scalable environments, and data retrieval capabilities. | AI & Machine LearningFintech | Portfolio page | ||
| Cowboy Space Corp is building a power grid in outer space for artificial intelligence using satellites and rockets to haul high-performance compute and optical data transmission | Space & DefenseAI & Machine Learning | Portfolio page | ||
| Flower Computer Co. develops a next-generation data runtime called Bog, a pre-release database runtime and programming language for building custom compiled databases. | Healthcare & BiotechFintech | Portfolio page | ||
| Fractal Power builds and operates the critical infrastructure layer to the modern economy by delivering energy where and when it's needed most. | EducationOther | Portfolio page | ||
| Interfere finds issues in applications and helps resolve them | CybersecuritySpace & Defense | Portfolio page | ||
| Truffle develops and sells a private, local exo-cortex device that promotes data sovereignty and individuality | AI & Machine LearningConsumer | Portfolio page |
About this data
site last read 5 Nov 2026- Site
- worldbuild.vc
- Last read
- 5 Nov 2026
- Watching since
- 6 Nov 2026
- Companies checked
- 9
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 Worldbuild's profile as data
Pull Worldbuild'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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