Investors / Mayfield / Compare with Seifdune
Mayfield vs Seifdune
Mayfield lists 132 portfolio companies and has joined 38 funding rounds; Seifdune lists 1 company and has joined 0 rounds. Mayfield comes in most often at Series A (39% of its entries). 1 company is on both portfolios, among them Lumilens.
132Portfolio companies1
38Funding rounds joined0
13Rounds led0
21Rounds, last 12 months0
$20M to $100MTypical round it comes in atn/a
0%Sites no longer answering0%
Show as a table
| Mayfield | Seifdune | |
|---|---|---|
| Portfolio companies | 132 | 1 |
| Funding rounds joined | 38 | 0 |
| Rounds led | 13 | 0 |
| Rounds, last 12 months | 21 | 0 |
| Typical round it comes in at | $20M to $100M | n/a |
| Sites no longer answering | 0% | 0% |
Where they come in
share of entries by stagePre-seed3%0%
Seed36%0%
Series A39%0%
Series B10%0%
Growth13%0%
MayfieldSeifdune
Show as a table
| Mayfield | Seifdune | |
|---|---|---|
| Pre-seed | 3% | 0% |
| Seed | 36% | 0% |
| Series A | 39% | 0% |
| Series B | 10% | 0% |
| Growth | 13% | 0% |
Themes
share of checked companiesAI & Machine Learning34%50%
Cybersecurity11%50%
Enterprise Software9%0%
Healthcare & Biotech8%0%
Fintech7%0%
Education5%0%
MayfieldSeifdune
Show as a table
| Mayfield | Seifdune | |
|---|---|---|
| AI & Machine Learning | 34% | 50% |
| Cybersecurity | 11% | 50% |
| Enterprise Software | 9% | 0% |
| Healthcare & Biotech | 8% | 0% |
| Fintech | 7% | 0% |
| Education | 5% | 0% |
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
Free account · no card
Compare Mayfield and Seifdune 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/seifdune.com/portfolio
GET /v1/firms/mayfield.com/coinvestors