/

Investors / M12 / Compare with Y Combinator

M12 vs Y Combinator

M12 lists 62 portfolio companies and has joined 34 funding rounds; Y Combinator lists 5,153 companies and has joined 3,388 rounds. M12 comes in most often at Series A (47% of its entries), Y Combinator comes in most often at Seed (98% of its entries). 6 companies are on both portfolios, among them cinder.ai, Eventual and Auctor.

62Portfolio companies5,153
34Funding rounds joined3,388
4Rounds led2,960
22Rounds, last 12 months579
$20M to $100MTypical round it comes in atunder $1M
0%Sites no longer answering0%
Show as a table
M12 and Y Combinator, head to head
M12Y Combinator
Portfolio companies625,153
Funding rounds joined343,388
Rounds led42,960
Rounds, last 12 months22579
Typical round it comes in at$20M to $100Munder $1M
Sites no longer answering0%0%

Where they come in

share of entries by stage
Pre-seed0%0%
Seed13%98%
Series A47%1%
Series B31%0%
Growth9%1%

M12Y Combinator

Show as a table
Entry stages of M12 and Y Combinator, share of entries
M12Y Combinator
Pre-seed0%0%
Seed13%98%
Series A47%1%
Series B31%0%
Growth9%1%

Themes

share of checked companies
AI & Machine Learning38%26%
Cybersecurity21%5%
Fintech5%13%
Enterprise Software12%10%
Healthcare & Biotech6%11%
Industrial & Manufacturing6%4%

M12Y Combinator

Show as a table
Themes of M12 and Y Combinator, share of checked companies
M12Y Combinator
AI & Machine Learning38%26%
Cybersecurity21%5%
Fintech5%13%
Enterprise Software12%10%
Healthcare & Biotech6%11%
Industrial & Manufacturing6%4%

Companies both back

6

Shared 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 M12 and Y Combinator 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
VCinfo API
$ curl -H "X-API-Key: YOUR_KEY" \
  https://api.vcinfo.io/v1/firms/m12.vc/portfolio

# also
GET /v1/firms/ycombinator.com/portfolio
GET /v1/firms/m12.vc/coinvestors
The same data as an MCP server for Claude, Cursor and other AI tools. Set up MCP · Docs · Pricing