Co-investors · Accelerator · United States

Who invests with Y Combinator

1,812 investors have backed two or more of the 3,951 startups Y Combinator has backed in rounds we track. Grouped by kind, each ranked by how many of these startups it shares; Pioneer Fund shares the most, 336.

1,812co-investors
9kinds
SV Angelmost shared (274)
VC firmsmost common kind

Y Combinator's whole portfolioY Combinator's profile

VC firms

1,251

+1,227 more

Angels and networks

224

+200 more

Private equity and asset managers

97

+73 more

Corporate investors

83

+59 more

Accelerators

76

+52 more

Family offices

27

+3 more

Growth funds

26

+2 more

Government funds

23

Venture studios

5

Segment by segment

VC firms

1,251 investors

  1. SV AngelVC firmUnited States274 backed
  2. Liquid 2 VenturesVC firmUnited States260 backed
  3. GreycroftVC firmUnited States250 backed
  4. Andreessen HorowitzVC firmUnited States184 backed
  5. Soma CapitalVC firmUnited States182 backed
  6. Alumni VenturesVC firmUnited States180 backed
  7. General CatalystVC firmUnited States160 backed
  8. FundersClubVC firmUnited States146 backed

Angels and networks

224 investors

  1. 500 GlobalAngel investorUnited States98 backed
  2. PBPaul BuchheitAngel investorUnited States71 backed
  3. Alexis OhanianAngel investorUnited States56 backed
  4. Sam AltmanAngel investorUnited States32 backed
  5. Garry TanAngel investorUnited States27 backed
  6. Chris SaccaAngel investorUnited States13 backed
  7. RCRon ConwayAngel investor-12 backed
  8. KHKevin HaleAngel investor-12 backed

Private equity and asset managers

97 investors

  1. Pioneer FundPrivate equityUnited States336 backed
  2. GaingelsPrivate equityUnited States134 backed
  3. ECEight CapitalFund of fundsUnited Arab Emirates46 backed
  4. Altair CapitalPrivate equitySingapore31 backed
  5. ACE & CompanyPrivate equitySwitzerland26 backed
  6. K5 GlobalPrivate equityUnited States20 backed
  7. WndrCoPrivate equityUnited States18 backed
  8. Franklin TempletonPrivate equityUnited States17 backed

Corporate investors

83 investors

  1. Google VenturesCorporate investorUnited States60 backed
  2. Salesforce VenturesCorporate investorUnited States55 backed
  3. Coinbase VenturesCorporate investorUnited States45 backed
  4. Samsung NextCorporate investorUnited States32 backed
  5. Endeavor CatalystCorporate investorUnited States27 backed
  6. Intel CapitalCorporate investorUnited States16 backed
  7. Digital Garage (TSE: 4819)Corporate investorJapan16 backed
  8. Comcast VenturesCorporate investorUnited States14 backed

Accelerators

76 investors

  1. Plug and PlayAcceleratorUnited States68 backed
  2. Amino CapitalAcceleratorUnited States41 backed
  3. Creative Destruction LabAcceleratorCanada24 backed
  4. MassChallengeAcceleratorUnited States22 backed
  5. Google for StartupsAcceleratorUnited States22 backed
  6. South Park CommonsAcceleratorUnited States16 backed
  7. Entrepreneur FirstAcceleratorUnited Kingdom16 backed
  8. Thrive CapitalAcceleratorUnited States15 backed

Family offices

27 investors

  1. Marc Bell CapitalFamily officeUnited States24 backed
  2. Thrive CapitalFamily office-23 backed
  3. Real VenturesFamily officeBrazil14 backed
  4. Webb Investment NetworkFamily officeUnited States11 backed
  5. ICICONIQ CapitalFamily officeUnited States8 backed
  6. Winklevoss CapitalFamily officeUnited States7 backed
  7. Omidyar NetworkFamily officeUnited States7 backed
  8. True Capital ManagementFamily officeUnited States7 backed

Growth funds

26 investors

  1. CitibankGrowth fundUnited States39 backed
  2. BondGrowth fundUnited States19 backed
  3. Human CapitalGrowth fundNew Zealand8 backed
  4. DDSTGrowth fund-4 backed
  5. S2G InvestmentsGrowth fundUnited States4 backed
  6. HSBCGrowth fundUnited Kingdom4 backed
  7. SISequoia IndiaGrowth fund-3 backed
  8. IIIVP (Institutional Venture Partners)Growth fund-3 backed

Government funds

23 investors

  1. National Science FoundationGovernment fundUnited States36 backed
  2. BpifranceGovernment fundFrance12 backed
  3. Export Development CanadaGovernment fundCanada9 backed
  4. Connecticut InnovationsGovernment fundUnited States9 backed
  5. EIC AcceleratorGovernment fundEuropean Union8 backed
  6. International Finance CorporationGovernment fundUnited States6 backed
  7. AQC CapitalGovernment fundCanada6 backed
  8. National Institutes of HealthGovernment fundUnited States5 backed

Venture studios

5 investors

  1. AlleyCorpVenture studioUnited States94 backed
  2. The Spartan GroupVenture studioHong Kong SAR China7 backed
  3. HexaVenture studioFrance2 backed
  4. PSVVenture studioDenmark2 backed
  5. MV GlobalVenture studioBritish Virgin Islands2 backed

How this map is made. Every investor here has backed two or more of the same startups as Y Combinator, in rounds we track. Grouped by kind, each ranked by how many startups it shares with Y Combinator. Rebuilt nightly; updated 15 November 2026.

More portfolio maps

All portfolios
Portfolio mapY Combinator portfolio map2,679 startups · $111BSector portfolioY Combinator's AI portfolio1,143 startups · $44BSector portfolioY Combinator's Fintech portfolio338 startups · $24BSector portfolioY Combinator's Big Data & Analytics portfolio201 startups · $3.4BSector portfolioY Combinator's Healthtech portfolio150 startups · $4.2BSector portfolioY Combinator's IT Services portfolio148 startups · $840M

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