Investors / 15th Rock / Compare with JR East Start UP
15th Rock vs JR East Start UP
15th Rock lists 37 portfolio companies and has joined 3 funding rounds; JR East Start UP lists 50 companies and has joined 2 rounds. 15th Rock comes in most often at Series A (100% of its entries), JR East Start UP comes in most often at Series A (50% of its entries). 2 companies are on both portfolios, among them PETOKOTO and Tent.
Show as a table
| 15th Rock | JR East Start UP | |
|---|---|---|
| Portfolio companies | 37 | 50 |
| Funding rounds joined | 3 | 2 |
| Rounds led | 2 | 0 |
| Rounds, last 12 months | 3 | 2 |
| Typical round it comes in at | $1M to $5M | $1M to $5M |
| Sites no longer answering | 0% | 0% |
Where they come in
share of entries by stage15th RockJR East Start UP
Show as a table
| 15th Rock | JR East Start UP | |
|---|---|---|
| Pre-seed | 0% | 0% |
| Seed | 0% | 0% |
| Series A | 100% | 50% |
| Series B | 0% | 50% |
| Growth | 0% | 0% |
Themes
share of checked companies15th RockJR East Start UP
Show as a table
| 15th Rock | JR East Start UP | |
|---|---|---|
| Healthcare & Biotech | 23% | 5% |
| AI & Machine Learning | 20% | 22% |
| Industrial & Manufacturing | 7% | 17% |
| Fintech | 13% | 3% |
| Real Estate & Construction | 0% | 9% |
| Education | 7% | 0% |
Companies both back
2Shared companies are those both firms' own portfolio pages list, each checked against the company's site. The same comparison through the API is POST /v1/overlap, for up to 20 firms. How the data is graded
Compare 15th Rock and JR East Start UP as data
Pull both portfolios and every co-investor through one API key or MCP, and lay up to 20 firms side by side with POST /v1/overlap. A free account adds Ask AI searches and alerts when either firm adds a company.
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/15th-rock.com/portfolio
# also
GET /v1/firms/jrestartup.co.jp/portfolio
GET /v1/firms/15th-rock.com/coinvestors