Investors / Carbon13 / Compare with Sandbox Industries
Carbon13 vs Sandbox Industries
Carbon13 lists 68 portfolio companies and has joined 5 funding rounds; Sandbox Industries lists 20 companies and has joined 3 rounds. Carbon13 comes in most often at Seed (60% of its entries), Sandbox Industries comes in most often at Series A (100% of its entries). 1 company is on both portfolios, among them Anzen.
Show as a table
| Carbon13 | Sandbox Industries | |
|---|---|---|
| Portfolio companies | 68 | 20 |
| Funding rounds joined | 5 | 3 |
| Rounds led | 3 | 0 |
| Rounds, last 12 months | 4 | 1 |
| Typical round it comes in at | under $1M | $20M to $100M |
| Sites no longer answering | 0% | 0% |
Where they come in
share of entries by stageCarbon13Sandbox Industries
Show as a table
| Carbon13 | Sandbox Industries | |
|---|---|---|
| Pre-seed | 40% | 0% |
| Seed | 60% | 0% |
| Series A | 0% | 100% |
| Series B | 0% | 0% |
| Growth | 0% | 0% |
Themes
share of checked companiesCarbon13Sandbox Industries
Show as a table
| Carbon13 | Sandbox Industries | |
|---|---|---|
| Healthcare & Biotech | 2% | 38% |
| Fintech | 8% | 31% |
| Industrial & Manufacturing | 20% | 3% |
| AI & Machine Learning | 18% | 6% |
| Education | 14% | 0% |
| Space & Defense | 10% | 3% |
Companies both back
1Shared 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 Carbon13 and Sandbox Industries 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/carbonthirteen.com/portfolio
# also
GET /v1/firms/sandboxindustries.com/portfolio
GET /v1/firms/carbonthirteen.com/coinvestors