Investors / Old Main Ventures
Old Main Ventures
Venture capital
Old Main Ventures is a venture capital firm run by students and headed by industry professionals and educators. It co-invests alongside other investors in minority ownership transactions and adds value to its portfolio companies.
Invests inFintechHealthcare & BiotechCybersecurity
In its own wordsfintechsaastech-enabled servicesconsumer productsgrowth capital
Your fit with Old Main Ventures
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsOld Main Ventures lists 3 checked portfolio companies on its own site. Its largest themes are Fintech (40%), Healthcare & Biotech (20%) and Cybersecurity (20%). 100% of its companies are based in United States. It invests most often alongside Astia, Borderless Capital and Castle Island Ventures.
No funding round on record names Old Main Ventures 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 | |
|---|---|---|
| Fintech | 40% | 12% |
| Healthcare & Biotech | 20% | 15% |
| Cybersecurity | 20% | 4% |
| Real Estate & Construction | 20% | 3% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Astia | 1 |
| Borderless Capital | 1 |
| Castle Island Ventures | 1 |
| RET Ventures | 1 |
| Second Century Ventures | 1 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers3100%
- 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 Old Main Ventures head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Portfolio
3 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Attestiv validates digital files such as photos, documents, audio, and video using AI analysis to prevent fraud and errors | CybersecurityFintech | Portfolio page | ||
| Light Line Medical develops a proprietary PhotoDisinfection System to prevent and treat catheter-associated infections | Healthcare & Biotech | Portfolio page | ||
| PredictAP provides AI-powered invoice coding for real estate accounts payable | Real Estate & ConstructionFintech | Portfolio page |
About this data
site last read 5 Nov 2026- Site
- oldmainvc.com
- Last read
- 5 Nov 2026
- Watching since
- 6 Nov 2026
- Companies checked
- 3
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 Old Main Ventures' profile as data
Pull Old Main Ventures' 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/oldmainvc.com
# also
GET /v1/firms/oldmainvc.com/portfolio
GET /v1/firms/oldmainvc.com/coinvestors
GET /v1/firms/oldmainvc.com/news