# Who Invests With Atom Factory: 34 Co-Investors (2026) > The 34 investors that have backed two or more of the same startups as Atom Factory, by kind: vc firms and angels and networks. Most often AFSquare. Source: https://millionrounds.com/portfolio-maps/atom-factory-co-investors (Millionrounds; every figure on the page links to its filing or article) ## VC firms 28 - [AFSquare](https://millionrounds.com/fund/afsquare) - [MESA+](https://millionrounds.com/fund/mesa) - [Ashton Kutcher](https://millionrounds.com/fund/ashton-kutcher) - [Guy Oseary](https://millionrounds.com/fund/guy-oseary) - [Menlo Ventures](https://millionrounds.com/fund/menlo-ventures) - [Kleiner Perkins Caufield & Byers](https://millionrounds.com/fund/kleiner-perkins-caufield-and-byers) - [Founders Fund](https://millionrounds.com/fund/founders-fund) - [SV Angel](https://millionrounds.com/fund/sv-angel) - [A-Grade Investments](https://millionrounds.com/fund/a-grade-investments) - [Felicis](https://millionrounds.com/fund/felicis-ventures) - [Bessemer Venture Partners](https://millionrounds.com/fund/bessemer-venture-partners) - [Founder Collective](https://millionrounds.com/fund/founder-collective) - [Promus Ventures](https://millionrounds.com/fund/promus-ventures) - [FundersClub](https://millionrounds.com/fund/fundersclub) - [Start Fund](https://millionrounds.com/fund/start-fund) - [Naval Ravikant](https://millionrounds.com/fund/naval-ravikant) - [Homebrew](https://millionrounds.com/fund/homebrew) - [Signatures Capital](https://millionrounds.com/fund/signatures-capital) - [*TC* Troy Carter](https://millionrounds.com/fund/troy-carter) - [Fidelity](https://millionrounds.com/fund/fidelity) - [Cota Capital](https://millionrounds.com/fund/cota-capital) - [DCVC](https://millionrounds.com/fund/data-collective) - [Greycroft](https://millionrounds.com/fund/greycroft) - [RRE Ventures](https://millionrounds.com/fund/rre-ventures) +4 more ## Angels and networks 6 - [*5G* 500 Global](https://millionrounds.com/fund/500-startups) - [*AO* Alexis Ohanian](https://millionrounds.com/fund/alexis-ohanian) - [*ER* Eric Ries](https://millionrounds.com/fund/eric-ries) - [*PB* Paul Buchheit](https://millionrounds.com/fund/paul-buchheit) - [*SA* Sam Altman](https://millionrounds.com/fund/sam-altman) - [*KS* Kevin Systrom](https://millionrounds.com/fund/kevin-systrom) ## Segment by segment ### VC firms 28 investors - [**AFSquare**](https://millionrounds.com/fund/afsquare) VC firm United States 9 backed - [**MESA+**](https://millionrounds.com/fund/mesa) VC firm United States 3 backed - [**Ashton Kutcher**](https://millionrounds.com/fund/ashton-kutcher) VC firm United States 3 backed - [**Guy Oseary**](https://millionrounds.com/fund/guy-oseary) VC firm United States 3 backed - [**Menlo Ventures**](https://millionrounds.com/fund/menlo-ventures) VC firm United States 3 backed - [**Kleiner Perkins Caufield & Byers**](https://millionrounds.com/fund/kleiner-perkins-caufield-and-byers) VC firm United States 3 backed - [**Founders Fund**](https://millionrounds.com/fund/founders-fund) VC firm United States 2 backed - [**SV Angel**](https://millionrounds.com/fund/sv-angel) VC firm United States 2 backed ### Angels and networks 6 investors - [*5G* **500 Global**](https://millionrounds.com/fund/500-startups) Angel investor United States 3 backed - [*AO* **Alexis Ohanian**](https://millionrounds.com/fund/alexis-ohanian) Angel investor United States 3 backed - [*ER* **Eric Ries**](https://millionrounds.com/fund/eric-ries) Angel investor - 2 backed - [*PB* **Paul Buchheit**](https://millionrounds.com/fund/paul-buchheit) Angel investor United States 2 backed - [*SA* **Sam Altman**](https://millionrounds.com/fund/sam-altman) Angel investor United States 2 backed - [*KS* **Kevin Systrom**](https://millionrounds.com/fund/kevin-systrom) Angel investor United States 2 backed **How this map is made.** Every investor here has backed two or more of the same startups as Atom Factory, in rounds we track. Grouped by kind, each ranked by how many startups it shares with Atom Factory. Rebuilt nightly; updated 15 November 2026. ## More portfolio maps [All portfolios](https://millionrounds.com/portfolio-maps) [Co-investors **Who invests with Techstars** 991 co-investors](https://millionrounds.com/portfolio-maps/techstars-co-investors)[Co-investors **Who invests with SV Angel** 988 co-investors](https://millionrounds.com/portfolio-maps/sv-angel-co-investors)[Co-investors **Who invests with Andreessen Horowitz** 977 co-investors](https://millionrounds.com/portfolio-maps/andreessen-horowitz-co-investors)[Co-investors **Who invests with Alumni Ventures** 911 co-investors](https://millionrounds.com/portfolio-maps/us-strategic-tech-fund-an-alumni-ventures-fund-co-investors)[Co-investors **Who invests with Sequoia Capital** 827 co-investors](https://millionrounds.com/portfolio-maps/sequoia-capital-co-investors)[Co-investors **Who invests with Founders Fund** 747 co-investors](https://millionrounds.com/portfolio-maps/founders-fund-co-investors) ## Raising from investors like Atom Factory? 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