Investors / Mayfield / Compare with Y Combinator
Mayfield vs Y Combinator
Mayfield lists 132 portfolio companies and has joined 38 funding rounds; Y Combinator lists 5,153 companies and has joined 3,388 rounds. Mayfield comes in most often at Series A (39% of its entries), Y Combinator comes in most often at Seed (98% of its entries). 8 companies are on both portfolios, among them Pulse, InfluxData and Marco Polo.
Show as a table
| Mayfield | Y Combinator | |
|---|---|---|
| Portfolio companies | 132 | 5,153 |
| Funding rounds joined | 38 | 3,388 |
| Rounds led | 13 | 2,960 |
| Rounds, last 12 months | 21 | 579 |
| Typical round it comes in at | $20M to $100M | under $1M |
| Sites no longer answering | 0% | 0% |
Where they come in
share of entries by stageMayfieldY Combinator
Show as a table
| Mayfield | Y Combinator | |
|---|---|---|
| Pre-seed | 3% | 0% |
| Seed | 36% | 98% |
| Series A | 39% | 1% |
| Series B | 10% | 0% |
| Growth | 13% | 1% |
Themes
share of checked companiesMayfieldY Combinator
Show as a table
| Mayfield | Y Combinator | |
|---|---|---|
| AI & Machine Learning | 34% | 26% |
| Fintech | 7% | 13% |
| Cybersecurity | 11% | 5% |
| Healthcare & Biotech | 8% | 11% |
| Enterprise Software | 9% | 10% |
| Education | 5% | 5% |
Companies both back
8Shared 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 Mayfield and Y Combinator 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/mayfield.com/portfolio
# also
GET /v1/firms/ycombinator.com/portfolio
GET /v1/firms/mayfield.com/coinvestors