Investors / Carbon13 / Compare with Redstone
Carbon13 vs Redstone
Carbon13 lists 68 portfolio companies and has joined 5 funding rounds; Redstone lists 104 companies and has joined 25 rounds. Carbon13 comes in most often at Seed (60% of its entries), Redstone comes in most often at Seed (75% of its entries). 1 company is on both portfolios, among them Anzen.
Show as a table
| Carbon13 | Redstone | |
|---|---|---|
| Portfolio companies | 68 | 104 |
| Funding rounds joined | 5 | 25 |
| Rounds led | 3 | 9 |
| Rounds, last 12 months | 4 | 17 |
| Typical round it comes in at | under $1M | $1M to $5M |
| Sites no longer answering | 0% | 0% |
Where they come in
share of entries by stageCarbon13Redstone
Show as a table
| Carbon13 | Redstone | |
|---|---|---|
| Pre-seed | 40% | 4% |
| Seed | 60% | 75% |
| Series A | 0% | 21% |
| Series B | 0% | 0% |
| Growth | 0% | 0% |
Themes
share of checked companiesCarbon13Redstone
Show as a table
| Carbon13 | Redstone | |
|---|---|---|
| AI & Machine Learning | 18% | 20% |
| Industrial & Manufacturing | 20% | 8% |
| Fintech | 8% | 17% |
| Healthcare & Biotech | 2% | 15% |
| Education | 14% | 6% |
| Space & Defense | 10% | 4% |
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 Redstone 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/redstone.vc/portfolio
GET /v1/firms/carbonthirteen.com/coinvestors