# Who Invests With Sam Altman: 153 Co-Investors (2026) > The 153 investors that have backed two or more of the same startups as Sam Altman, by kind: vc firms, angels and networks and private equity and asset managers. Source: https://millionrounds.com/portfolio-maps/sam-altman-co-investors (Millionrounds; every figure on the page links to its filing or article) ## VC firms 103 - [SV Angel](https://millionrounds.com/fund/sv-angel) - [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) - [Initialized Capital](https://millionrounds.com/fund/initialized-capital) - [Felicis](https://millionrounds.com/fund/felicis-ventures) - [Ashton Kutcher](https://millionrounds.com/fund/ashton-kutcher) - [Founders Fund](https://millionrounds.com/fund/founders-fund) - [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) - [General Catalyst](https://millionrounds.com/fund/general-catalyst) - [Start Fund](https://millionrounds.com/fund/start-fund) - [*JS* Joshua Schachter](https://millionrounds.com/fund/joshua-schachter) - [Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) - [FundersClub](https://millionrounds.com/fund/fundersclub) - [Elad Gil](https://millionrounds.com/fund/elad-gil) - [*RS* Ram Shriram](https://millionrounds.com/fund/ram-shriram) - [First Round Capital](https://millionrounds.com/fund/first-round-capital) - [CrunchFund](https://millionrounds.com/fund/crunchfund-3) - [Raymond Tonsing](https://millionrounds.com/fund/raymond-tonsing) - [Sequoia Capital](https://millionrounds.com/fund/sequoia-capital) - [Index Ventures](https://millionrounds.com/fund/index-ventures) - [Quiet Capital](https://millionrounds.com/fund/quiet-capital) - [*AL* Aaron Levie](https://millionrounds.com/fund/aaron-levie) - [Signatures Capital](https://millionrounds.com/fund/signatures-capital) - [Cota Capital](https://millionrounds.com/fund/cota-capital) - [Founder Collective](https://millionrounds.com/fund/founder-collective) +79 more ## Angels and networks 35 - [*PB* Paul Buchheit](https://millionrounds.com/fund/paul-buchheit) - [*AO* Alexis Ohanian](https://millionrounds.com/fund/alexis-ohanian) - [*GT* Garry Tan](https://millionrounds.com/fund/garry-tan) - [*5G* 500 Global](https://millionrounds.com/fund/500-startups) - [*PT* Peter Thiel](https://millionrounds.com/fund/peter-thiel) - [*RC* Ron Conway](https://millionrounds.com/fund/ron-conway) - [*TB* Tikhon Bernstam](https://millionrounds.com/fund/tikhon-bernstam) - [*JS* Jeremy Stoppelman](https://millionrounds.com/fund/jeremy-stoppelman) - [*PC* Patrick Collison](https://millionrounds.com/fund/patrick-collison) - [*DC* Dalton Caldwell](https://millionrounds.com/fund/dalton-caldwell) - [*MK* Mitch Kapor](https://millionrounds.com/fund/mitch-kapor) - [*LG* Lachy Groom](https://millionrounds.com/fund/lachy-groom) - [*DM* Dustin Moskovitz](https://millionrounds.com/fund/dustin-moskovitz) - [*KV* Kal Vepuri](https://millionrounds.com/fund/kal-vepuri) - [*JL* Jared Leto](https://millionrounds.com/fund/jared-leto) - [*DR* Dan Rose](https://millionrounds.com/fund/dan-rose) - [*AR* Ali Rowghani](https://millionrounds.com/fund/ali-rowghani) - [*JB* James Beshara](https://millionrounds.com/fund/james-beshara) - [*ER* Eric Ries](https://millionrounds.com/fund/eric-ries) - [*ML* Michael Liou](https://millionrounds.com/fund/michael-liou) - [*KH* Kevin Hale](https://millionrounds.com/fund/kevin-hale) - [*GR* Gokul Rajaram](https://millionrounds.com/fund/gokul-rajaram) - [*CC* Charlie Cheever](https://millionrounds.com/fund/charlie-cheever) - [*BL* Ben Ling](https://millionrounds.com/fund/ben-ling) +11 more ## Private equity and asset managers 6 - [General Atlantic](https://millionrounds.com/fund/general-atlantic) - [DST Global](https://millionrounds.com/fund/dst-global) - [ACE & Company](https://millionrounds.com/fund/ace-and-company) - [Gaingels](https://millionrounds.com/fund/gaingels) - [Dragoneer Investment](https://millionrounds.com/fund/dragoneer-investment-group) - [T. Rowe Price](https://millionrounds.com/fund/t-rowe-price) ## Accelerators 3 - [Y Combinator](https://millionrounds.com/fund/y-combinator) - [Obvious Ventures](https://millionrounds.com/fund/obvious-ventures) - [Plug and Play](https://millionrounds.com/fund/plug-and-play) ## Corporate investors 3 - [Google Ventures](https://millionrounds.com/fund/gv) - [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) - [Comcast Ventures](https://millionrounds.com/fund/comcast-ventures) ## Family offices 3 - [Thrive Capital](https://millionrounds.com/fund/thrive-capital-2) - [Webb Investment Network](https://millionrounds.com/fund/webb-investment-network) - [Trajectory Capital](https://millionrounds.com/fund/trajectory-capital-partners) ## Segment by segment ### VC firms 103 investors - [**SV Angel**](https://millionrounds.com/fund/sv-angel) VC firm United States 23 backed - [**Andreessen Horowitz**](https://millionrounds.com/fund/andreessen-horowitz) VC firm United States 14 backed - [**Initialized Capital**](https://millionrounds.com/fund/initialized-capital) VC firm United States 10 backed - [**Felicis**](https://millionrounds.com/fund/felicis-ventures) VC firm United States 10 backed - [**Ashton Kutcher**](https://millionrounds.com/fund/ashton-kutcher) VC firm United States 8 backed - [**Founders Fund**](https://millionrounds.com/fund/founders-fund) VC firm United States 7 backed - [**Khosla Ventures**](https://millionrounds.com/fund/khosla-ventures) VC firm United States 6 backed - [**General Catalyst**](https://millionrounds.com/fund/general-catalyst) VC firm United States 6 backed ### Angels and networks 35 investors - [*PB* **Paul Buchheit**](https://millionrounds.com/fund/paul-buchheit) Angel investor United States 19 backed - [*AO* **Alexis Ohanian**](https://millionrounds.com/fund/alexis-ohanian) Angel investor United States 17 backed - [*GT* **Garry Tan**](https://millionrounds.com/fund/garry-tan) Angel investor United States 11 backed - [*5G* **500 Global**](https://millionrounds.com/fund/500-startups) Angel investor United States 6 backed - [*PT* **Peter Thiel**](https://millionrounds.com/fund/peter-thiel) Angel investor United States 5 backed - [*RC* **Ron Conway**](https://millionrounds.com/fund/ron-conway) Angel investor - 4 backed - [*TB* **Tikhon Bernstam**](https://millionrounds.com/fund/tikhon-bernstam) Angel investor United States 4 backed - [*JS* **Jeremy Stoppelman**](https://millionrounds.com/fund/jeremy-stoppelman) Angel investor United States 3 backed ### Private equity and asset managers 6 investors - [**General Atlantic**](https://millionrounds.com/fund/general-atlantic) Private equity United States 4 backed - [**DST Global**](https://millionrounds.com/fund/dst-global) Private equity United Kingdom 3 backed - [**ACE & Company**](https://millionrounds.com/fund/ace-and-company) Private equity Switzerland 3 backed - [**Gaingels**](https://millionrounds.com/fund/gaingels) Private equity United States 2 backed - [**Dragoneer Investment**](https://millionrounds.com/fund/dragoneer-investment-group) Private equity United States 2 backed - [**T. Rowe Price**](https://millionrounds.com/fund/t-rowe-price) Private equity United States 2 backed ### Accelerators 3 investors - [**Y Combinator**](https://millionrounds.com/fund/y-combinator) Accelerator United States 32 backed - [**Obvious Ventures**](https://millionrounds.com/fund/obvious-ventures) Accelerator United States 2 backed - [**Plug and Play**](https://millionrounds.com/fund/plug-and-play) Accelerator United States 2 backed ### Corporate investors 3 investors - [**Google Ventures**](https://millionrounds.com/fund/gv) Corporate investor United States 10 backed - [**Salesforce Ventures**](https://millionrounds.com/fund/salesforce-ventures) Corporate investor United States 3 backed - [**Comcast Ventures**](https://millionrounds.com/fund/comcast-ventures) Corporate investor United States 2 backed ### Family offices 3 investors - [**Thrive Capital**](https://millionrounds.com/fund/thrive-capital-2) Family office - 4 backed - [**Webb Investment Network**](https://millionrounds.com/fund/webb-investment-network) Family office United States 3 backed - [**Trajectory Capital**](https://millionrounds.com/fund/trajectory-capital-partners) Family office United States 2 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 portfolios](https://millionrounds.com/portfolio-maps) [Portfolio map **Sam Altman portfolio map** 38 startups · $8.5B](https://millionrounds.com/portfolio-maps/sam-altman-portfolio-map)[Sector portfolio **Sam Altman's AI portfolio** 10 startups · $2.3B](https://millionrounds.com/portfolio-maps/sam-altman-ai-portfolio)[Co-investors **Who invests with 500 Global** 996 co-investors](https://millionrounds.com/portfolio-maps/500-startups-co-investors)[Co-investors **Who invests with Paul Buchheit** 212 co-investors](https://millionrounds.com/portfolio-maps/paul-buchheit-co-investors)[Co-investors **Who invests with Alexis Ohanian** 194 co-investors](https://millionrounds.com/portfolio-maps/alexis-ohanian-co-investors)[Co-investors **Who invests with Fabrice Grinda** 177 co-investors](https://millionrounds.com/portfolio-maps/fabrice-grinda-co-investors) ## Raising from investors like Sam Altman? 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