/

Investors / Y Combinator / Compare with Yellow Rocks

Y Combinator vs Yellow Rocks

Y Combinator lists 5,150 portfolio companies and has joined 3,388 funding rounds; Yellow Rocks lists 42 companies and has joined 5 rounds. Y Combinator comes in most often at Seed (98% of its entries), Yellow Rocks comes in most often at Seed (100% of its entries). 2 companies are on both portfolios, among them Chatfuel and electroneek.com.

5,150Portfolio companies42
3,388Funding rounds joined5
2,960Rounds led0
579Rounds, last 12 months3
under $1MTypical round it comes in at$1M to $5M
0%Sites no longer answering0%
Show as a table
Y Combinator and Yellow Rocks, head to head
Y CombinatorYellow Rocks
Portfolio companies5,15042
Funding rounds joined3,3885
Rounds led2,9600
Rounds, last 12 months5793
Typical round it comes in atunder $1M$1M to $5M
Sites no longer answering0%0%

Where they come in

share of entries by stage
Pre-seed0%0%
Seed98%100%
Series A1%0%
Series B0%0%
Growth1%0%

Y CombinatorYellow Rocks

Show as a table
Entry stages of Y Combinator and Yellow Rocks, share of entries
Y CombinatorYellow Rocks
Pre-seed0%0%
Seed98%100%
Series A1%0%
Series B0%0%
Growth1%0%

Themes

share of checked companies
AI & Machine Learning26%33%
Fintech13%11%
Enterprise Software10%11%
Healthcare & Biotech11%5%
Education5%9%
Media & Entertainment3%9%

Y CombinatorYellow Rocks

Show as a table
Themes of Y Combinator and Yellow Rocks, share of checked companies
Y CombinatorYellow Rocks
AI & Machine Learning26%33%
Fintech13%11%
Enterprise Software10%11%
Healthcare & Biotech11%5%
Education5%9%
Media & Entertainment3%9%

Companies both back

2

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 Y Combinator and Yellow Rocks 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/ycombinator.com/portfolio

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