Investors / Main Sequence / Compare with Spring
Main Sequence vs Spring
Main Sequence lists 64 portfolio companies and has joined 21 funding rounds; Spring lists 199 companies and has joined 1 round. Main Sequence comes in most often at Series A (39% of its entries), Spring comes in most often at Pre-seed (100% of its entries). 1 company is on both portfolios, among them Rainstick.
Show as a table
| Main Sequence | Spring | |
|---|---|---|
| Portfolio companies | 64 | 199 |
| Funding rounds joined | 21 | 1 |
| Rounds led | 7 | 0 |
| Rounds, last 12 months | 13 | 1 |
| Typical round it comes in at | $5M to $20M | under $1M |
| Sites no longer answering | 0% | 0% |
Where they come in
share of entries by stageMain SequenceSpring
Show as a table
| Main Sequence | Spring | |
|---|---|---|
| Pre-seed | 6% | 100% |
| Seed | 22% | 0% |
| Series A | 39% | 0% |
| Series B | 11% | 0% |
| Growth | 22% | 0% |
Themes
share of checked companiesMain SequenceSpring
Show as a table
| Main Sequence | Spring | |
|---|---|---|
| AI & Machine Learning | 32% | 15% |
| Healthcare & Biotech | 11% | 31% |
| Industrial & Manufacturing | 16% | 9% |
| Education | 7% | 11% |
| Food & Agriculture | 6% | 8% |
| Robotics & Hardware | 6% | 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
Compare Main Sequence and Spring 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/mseq.vc/portfolio
# also
GET /v1/firms/spring.is/portfolio
GET /v1/firms/mseq.vc/coinvestors