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Investors / Index Ventures / Compare with Y Combinator

Index Ventures vs Y Combinator

Index Ventures lists 306 portfolio companies and has joined 125 funding rounds; Y Combinator lists 5,152 companies and has joined 3,388 rounds. Index Ventures comes in most often at Series A (30% of its entries), Y Combinator comes in most often at Seed (98% of its entries). 26 companies are on both portfolios, among them Parallel, Bird and Cocoon.

Index VenturesView profilevsY CombinatorView profile
306Portfolio companies5,152
125Funding rounds joined3,388
50Rounds led2,960
81Rounds, last 12 months579
$20M to $100MTypical round it comes in atunder $1M
0%Sites no longer answering0%
Show as a table
Index Ventures and Y Combinator, head to head
Index VenturesY Combinator
Portfolio companies3065,152
Funding rounds joined1253,388
Rounds led502,960
Rounds, last 12 months81579
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%
Seed22%98%
Series A30%1%
Series B21%0%
Growth27%1%

Index VenturesY Combinator

Show as a table
Entry stages of Index Ventures and Y Combinator, share of entries
Index VenturesY Combinator
Pre-seed0%0%
Seed22%98%
Series A30%1%
Series B21%0%
Growth27%1%

Themes

share of checked companies
AI & Machine Learning24%26%
Fintech18%13%
Enterprise Software12%10%
Healthcare & Biotech6%11%
E-commerce & Marketplaces7%5%
Cybersecurity6%5%

Index VenturesY Combinator

Show as a table
Themes of Index Ventures and Y Combinator, share of checked companies
Index VenturesY Combinator
AI & Machine Learning24%26%
Fintech18%13%
Enterprise Software12%10%
Healthcare & Biotech6%11%
E-commerce & Marketplaces7%5%
Cybersecurity6%5%

Companies both back

26
Parallelbeparallel.comBirdbird.comCocooncocoon.comCodecademycodecademy.comCurtsycurtsyapp.comDeepnotedeepnote.comDesign Arenadesignarena.aiDoubledoublehq.comDraftwisedraftwise.comDuffelduffel.comCastlegetcastle.comLeverlever.coMarkermarker.pageMultiversemultiverse.ioNewfrontnewfront.comNova Creditnovacredit.comParallel Web Systemsparallel.aiPavepave.comRevenueCatrevenuecat.comScale AIscale.comScience Exchangescienceexchange.comScoopscooplabs.aistandardtreasury.comstandardtreasury.comTaktiletaktile.comusenourish.comusenourish.comVoomavooma.ai

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

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Compare Index Ventures 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.

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  • 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/indexventures.com/portfolio

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