Investors / GreyMatter / Compare with Mayfield
GreyMatter vs Mayfield
GreyMatter lists 29 portfolio companies and has joined 3 funding rounds; Mayfield lists 134 companies and has joined 38 rounds. GreyMatter comes in most often at Series A (100% of its entries), Mayfield comes in most often at Series A (39% of its entries). 1 company is on both portfolios, among them Applied Cognition.
Show as a table
| GreyMatter | Mayfield | |
|---|---|---|
| Portfolio companies | 29 | 134 |
| Funding rounds joined | 3 | 38 |
| Rounds led | 0 | 13 |
| Rounds, last 12 months | 2 | 21 |
| Typical round it comes in at | $5M to $20M | $20M to $100M |
| Sites no longer answering | 0% | 0% |
Where they come in
share of entries by stageGreyMatterMayfield
Show as a table
| GreyMatter | Mayfield | |
|---|---|---|
| Pre-seed | 0% | 3% |
| Seed | 0% | 36% |
| Series A | 100% | 39% |
| Series B | 0% | 10% |
| Growth | 0% | 13% |
Themes
share of checked companiesGreyMatterMayfield
Show as a table
| GreyMatter | Mayfield | |
|---|---|---|
| Healthcare & Biotech | 81% | 9% |
| AI & Machine Learning | 9% | 34% |
| Cybersecurity | 6% | 11% |
| Enterprise Software | 3% | 9% |
| Fintech | 0% | 7% |
| Education | 0% | 5% |
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 GreyMatter and Mayfield 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/greymattercapital.com/portfolio
# also
GET /v1/firms/mayfield.com/portfolio
GET /v1/firms/greymattercapital.com/coinvestors