Investors / Addition / Compare with Altimeter
Addition vs Altimeter
Addition lists 21 portfolio companies and has joined 26 funding rounds; Altimeter lists 27 companies and has joined 35 rounds. Addition comes in most often at Growth (50% of its entries), Altimeter comes in most often at Growth (40% of its entries). 2 companies are on both portfolios, among them Anthropic and Base.
Show as a table
| Addition | Altimeter | |
|---|---|---|
| Portfolio companies | 21 | 27 |
| Funding rounds joined | 26 | 35 |
| Rounds led | 13 | 8 |
| Rounds, last 12 months | 13 | 22 |
| Typical round it comes in at | $20M to $100M | $100M or more |
| Sites no longer answering | 0% | 0% |
Where they come in
share of entries by stageAdditionAltimeter
Show as a table
| Addition | Altimeter | |
|---|---|---|
| Pre-seed | 0% | 0% |
| Seed | 0% | 16% |
| Series A | 23% | 16% |
| Series B | 27% | 28% |
| Growth | 50% | 40% |
Themes
share of checked companiesAdditionAltimeter
Show as a table
| Addition | Altimeter | |
|---|---|---|
| AI & Machine Learning | 24% | 54% |
| Enterprise Software | 8% | 18% |
| Healthcare & Biotech | 14% | 2% |
| Fintech | 11% | 0% |
| Industrial & Manufacturing | 11% | 6% |
| Cybersecurity | 5% | 10% |
Companies both back
2Shared 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 Addition and Altimeter 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/addition.com/portfolio
# also
GET /v1/firms/altimeter.com/portfolio
GET /v1/firms/addition.com/coinvestors