Investors / OS Fund
OS Fund
Venture capital
OS Fund is an investment firm founded by Bryan Johnson in 2014 with a $100 million personal investment. It invests early in computationally driven companies developing platform technologies and stays closely involved with its portfolio companies.
Invests inHealthcare & Biotech
In its own wordsgenomicssynthetic biologyartificial intelligencemachine learningtherapeuticsadvanced materials
Your fit with OS Fund
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsOS Fund lists 20 checked portfolio companies on its own site. Its largest themes are Healthcare & Biotech (65%), AI & Machine Learning (12%) and Food & Agriculture (8%). 100% of its companies are based in United States. It invests most often alongside Starlight Ventures, DCVC and Y Combinator.
No funding round on record names OS Fund yet, so the figures come from its portfolio page.
Round figures show recent activity, not OS Fund's whole history. Rounds on record name 0 companies; its own site lists 20. 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 | |
|---|---|---|
| Healthcare & Biotech | 65% | 15% |
| AI & Machine Learning | 12% | 18% |
| Food & Agriculture | 8% | 3% |
| Industrial & Manufacturing | 4% | 7% |
| Cybersecurity | 4% | 4% |
| E-commerce & Marketplaces | 4% | 6% |
| Robotics & Hardware | 4% | 1% |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers1575%
- No longer answers00%
- Points to another company525%
- 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 | 53th | 21 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 | 90th | 65% in its largest sector |
| Reach | 19th | 1 country |
Co-investor network
who it backs companies with, and who they back togetherAll co-investors or Compare portfolios with Starlight Ventures
Compare OS Fund head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Portfolio
20 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| 3T Biosciences is an immunotherapy company developing next-generation therapies for the treatment of solid tumors and other immune-mediated diseases | Healthcare & Biotech | Portfolio page | ||
| A-Alpha Bio harnesses synthetic biology and machine learning to precisely engineer high-impact medicines | Healthcare & Biotech | Portfolio page | ||
| Arzeda designs proteins for various applications, including sweeteners, home care, advanced materials, and biologics. | Healthcare & BiotechFood & Agriculture | Portfolio page | ||
Healthcare & Biotech | Portfolio page | |||
Healthcare & Biotech | Portfolio page | |||
Industrial & ManufacturingCybersecurity | Portfolio page | |||
| Elysium Health sells supplements for healthy aging and longevity | Healthcare & Biotech | Portfolio page | ||
| Emerald Cloud Lab provides a remote controlled life sciences laboratory that allows scientists to design, execute, and analyze experiments remotely | Healthcare & Biotech | Portfolio page | ||
| Emulate makes Organ-Chips for research and development | Healthcare & Biotech | Portfolio page | ||
| GRO Biosciences is redefining therapeutics by leveraging new protein building blocks to transform treatment for countless patients. | Healthcare & Biotech | Portfolio page | ||
| HelixNano develops drugs using nanotechnology | Healthcare & Biotech | Portfolio page | ||
| The company produces and sells plant-based food products, including egg, protein, meat, and condiment alternatives. | Food & Agriculture | Portfolio page | ||
| Portfolio page | ||||
Healthcare & Biotech | Portfolio page | |||
| Matternet designs, builds, and operates autonomous drone networks for package delivery. | Healthcare & BiotechE-commerce & Marketplaces | Portfolio page | ||
| Pivot Bio produces products that optimize crop production through specifically timed and placed nitrogen delivery | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Strateos provides a cloud lab automation platform for scientists to design, run, and analyze experiments | Healthcare & BiotechRobotics & Hardware | Portfolio page | ||
| Synthego develops and manufactures products for CRISPR gene editing and molecular diagnostics | Healthcare & Biotech | Portfolio page | ||
| Truvian brings comprehensive blood testing directly to the point of care, helping providers act while patients are still present. | Healthcare & Biotech | Portfolio page | ||
Healthcare & BiotechAI & Machine Learning | Portfolio page |
About this data
site last read 5 Nov 2026- Site
- osfund.co
- Last read
- 5 Nov 2026
- Watching since
- 5 Nov 2026
- Companies checked
- 20
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 OS Fund's profile as data
Pull OS 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.
Work email, sign-in link by email. Already have an account? Log in- Ask AI5 plain-English investor searches a day
- Full listsEvery portfolio row and two-firm overlap
- API and MCP100 REST or MCP calls a month, one key
- AlertsFollow 5 investors for portfolio and fund changes
$ curl -H "X-API-Key: YOUR_KEY" \
https://api.vcinfo.io/v1/firms/osfund.co
# also
GET /v1/firms/osfund.co/portfolio
GET /v1/firms/osfund.co/coinvestors
GET /v1/firms/osfund.co/news