Co-investors · Angel investor · United States
Who invests with Sam Altman
153 investors have backed two or more of the 66 startups Sam Altman has backed in rounds we track. Grouped by kind, each ranked by how many of these startups it shares; Y Combinator shares the most, 32.
153co-investors
6kinds
SV Angelmost shared (23)
VC firmsmost common kind
VC firms
103
SV Angel
Andreessen Horowitz
Initialized Capital
Felicis
Ashton Kutcher
Founders Fund
Khosla Ventures
General Catalyst
Start Fund- JSJoshua Schachter
Lightspeed Venture Partners
FundersClub
Elad Gil- RSRam Shriram
First Round Capital
CrunchFund
Raymond Tonsing
Sequoia Capital
Index Ventures
Quiet Capital- ALAaron Levie
Signatures Capital
Cota Capital
Founder Collective
+79 more
- PBPaul Buchheit
Alexis Ohanian
Garry Tan
500 Global- PTPeter Thiel
- RCRon Conway
- TBTikhon Bernstam
- JSJeremy Stoppelman
- PCPatrick Collison
- DCDalton Caldwell
- MKMitch Kapor
- LGLachy Groom
- DMDustin Moskovitz
- KVKal Vepuri
- JLJared Leto
- DRDan Rose
- ARAli Rowghani
- JBJames Beshara
Eric Ries- MLMichael Liou
- KHKevin Hale
Gokul Rajaram- CCCharlie Cheever
- BLBen Ling
+11 more
Segment by segment
VC firms
103 investors
- SV AngelVC firmUnited States23 backed
- Andreessen HorowitzVC firmUnited States14 backed
- Initialized CapitalVC firmUnited States10 backed
- FelicisVC firmUnited States10 backed
- Ashton KutcherVC firmUnited States8 backed
- Founders FundVC firmUnited States7 backed
- Khosla VenturesVC firmUnited States6 backed
- General CatalystVC firmUnited States6 backed
United StatesAngels and networks
35 investors
- PBPaul BuchheitAngel investorUnited States19 backed
- Alexis OhanianAngel investorUnited States17 backed
- Garry TanAngel investorUnited States11 backed
- 500 GlobalAngel investorUnited States6 backed
- PTPeter ThielAngel investorUnited States5 backed
- RCRon ConwayAngel investor-4 backed
- TBTikhon BernstamAngel investorUnited States4 backed
- JSJeremy StoppelmanAngel investorUnited States3 backed
Private equity and asset managers
6 investors
General AtlanticPrivate equityUnited States4 backed
DST GlobalPrivate equityUnited Kingdom3 backed
ACE & CompanyPrivate equitySwitzerland3 backed
GaingelsPrivate equityUnited States2 backed
Dragoneer InvestmentPrivate equityUnited States2 backed
T. Rowe PricePrivate equityUnited States2 backed
United Kingdom
SwitzerlandAccelerators
3 investors
Y CombinatorAcceleratorUnited States32 backed
Obvious VenturesAcceleratorUnited States2 backed
Plug and PlayAcceleratorUnited States2 backed
Corporate investors
3 investors
Google VenturesCorporate investorUnited States10 backed
Salesforce VenturesCorporate investorUnited States3 backed
Comcast VenturesCorporate investorUnited States2 backed
Family offices
3 investors
Thrive CapitalFamily office-4 backed
Webb Investment NetworkFamily officeUnited States3 backed
Trajectory CapitalFamily officeUnited States2 backed
How this map is made. Every investor here has backed two or more of the same startups as Sam Altman, in rounds we track. Grouped by kind, each ranked by how many startups it shares with Sam Altman. Rebuilt nightly; updated 15 November 2026.
More portfolio maps
All portfoliosPortfolio mapSam Altman portfolio map38 startups · $8.5BSector portfolioSam Altman's AI portfolio10 startups · $2.3BCo-investorsWho invests with 500 Global996 co-investorsCo-investorsWho invests with Paul Buchheit212 co-investorsCo-investorsWho invests with Alexis Ohanian194 co-investorsCo-investorsWho invests with Fabrice Grinda177 co-investors
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