Investors / Greylock / Compare with Pioneer Square Labs
Greylock vs Pioneer Square Labs
Greylock lists 153 portfolio companies and has joined 48 funding rounds; Pioneer Square Labs lists 46 companies and has joined 7 rounds. Greylock comes in most often at Seed (28% of its entries), Pioneer Square Labs comes in most often at Seed (86% of its entries). 1 company is on both portfolios, among them tincan.kids.
Show as a table
| Greylock | Pioneer Square Labs | |
|---|---|---|
| Portfolio companies | 153 | 46 |
| Funding rounds joined | 48 | 7 |
| Rounds led | 15 | 2 |
| Rounds, last 12 months | 24 | 3 |
| Typical round it comes in at | $20M to $100M | $5M to $20M |
| Sites no longer answering | 0% | 0% |
Where they come in
share of entries by stageGreylockPioneer Square Labs
Show as a table
| Greylock | Pioneer Square Labs | |
|---|---|---|
| Pre-seed | 0% | 0% |
| Seed | 28% | 86% |
| Series A | 28% | 0% |
| Series B | 25% | 14% |
| Growth | 20% | 0% |
Themes
share of checked companiesGreylockPioneer Square Labs
Show as a table
| Greylock | Pioneer Square Labs | |
|---|---|---|
| AI & Machine Learning | 27% | 21% |
| Cybersecurity | 16% | 4% |
| Fintech | 14% | 15% |
| Enterprise Software | 11% | 13% |
| Healthcare & Biotech | 7% | 6% |
| Space & Defense | 5% | 6% |
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 Greylock and Pioneer Square Labs 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/greylock.com/portfolio
# also
GET /v1/firms/psl.com/portfolio
GET /v1/firms/greylock.com/coinvestors