Investors / PROOF / Compare with SignalFire
PROOF vs SignalFire
PROOF lists 86 portfolio companies and has joined 0 funding rounds; SignalFire lists 135 companies and has joined 37 rounds. SignalFire comes in most often at Seed (36% of its entries). 3 companies are on both portfolios, among them EvenUp, Flagler and Ro.
86Portfolio companies135
0Funding rounds joined37
0Rounds led7
0Rounds, last 12 months27
n/aTypical round it comes in at$20M to $100M
0%Sites no longer answering0%
Show as a table
| PROOF | SignalFire | |
|---|---|---|
| Portfolio companies | 86 | 135 |
| Funding rounds joined | 0 | 37 |
| Rounds led | 0 | 7 |
| Rounds, last 12 months | 0 | 27 |
| Typical round it comes in at | n/a | $20M to $100M |
| Sites no longer answering | 0% | 0% |
Where they come in
share of entries by stagePre-seed0%0%
Seed0%36%
Series A0%33%
Series B0%9%
Growth0%21%
PROOFSignalFire
Show as a table
| PROOF | SignalFire | |
|---|---|---|
| Pre-seed | 0% | 0% |
| Seed | 0% | 36% |
| Series A | 0% | 33% |
| Series B | 0% | 9% |
| Growth | 0% | 21% |
Themes
share of checked companiesAI & Machine Learning15%27%
Fintech16%11%
Healthcare & Biotech11%15%
Enterprise Software9%14%
E-commerce & Marketplaces9%3%
Cybersecurity7%7%
PROOFSignalFire
Show as a table
| PROOF | SignalFire | |
|---|---|---|
| AI & Machine Learning | 15% | 27% |
| Fintech | 16% | 11% |
| Healthcare & Biotech | 11% | 15% |
| Enterprise Software | 9% | 14% |
| E-commerce & Marketplaces | 9% | 3% |
| Cybersecurity | 7% | 7% |
Companies both back
3Shared 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 PROOF and SignalFire 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/proof.vc/portfolio
# also
GET /v1/firms/signalfire.com/portfolio
GET /v1/firms/proof.vc/coinvestors