# Who Invests With O'Reilly AlphaTech Ventures: 45 Co-Investors (2026) > The 45 investors that have backed two or more of the same startups as O'Reilly AlphaTech Ventures, by kind: vc firms and angels and networks. Source: https://millionrounds.com/portfolio-maps/o-reilly-alphatech-ventures-co-investors (Millionrounds; every figure on the page links to its filing or article) ## VC firms 38 - [Index Ventures](https://millionrounds.com/fund/index-ventures) - [SV Angel](https://millionrounds.com/fund/sv-angel) - [Union Square Ventures](https://millionrounds.com/fund/union-square-ventures) - [*LV* Lerer Ventures](https://millionrounds.com/fund/lerer-ventures) - [*JS* Joshua Schachter](https://millionrounds.com/fund/joshua-schachter) - [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) - [Shasta Ventures](https://millionrounds.com/fund/shasta-ventures) - [Slow Ventures](https://millionrounds.com/fund/slow-ventures) - [Spark Capital](https://millionrounds.com/fund/spark-capital) - [DFJ](https://millionrounds.com/fund/dfj) - [Founders Fund](https://millionrounds.com/fund/founders-fund) - [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) - [Foundry Group](https://millionrounds.com/fund/foundry) - [Collaborative Fund](https://millionrounds.com/fund/collaborative-fund) - [Yuri Milner](https://millionrounds.com/fund/yuri-milner) - [Norwest Venture Partners](https://millionrounds.com/fund/norwest) - [Morado Ventures](https://millionrounds.com/fund/morado-ventures) - [Esther Dyson](https://millionrounds.com/fund/esther-dyson) - [Tenaya Capital](https://millionrounds.com/fund/tenaya-capital) - [Dave Morin](https://millionrounds.com/fund/dave-morin) - [August Capital](https://millionrounds.com/fund/august-capital) - [*JH* Jared Hecht](https://millionrounds.com/fund/jared-hecht) - [*AR* Alex Rainert](https://millionrounds.com/fund/alex-rainert) - [Founder Collective](https://millionrounds.com/fund/founder-collective) +14 more ## Angels and networks 7 - [Techammer](https://millionrounds.com/fund/techammer) - [*JI* Joi Ito](https://millionrounds.com/fund/joi-ito) - [*RW* Rick Webb](https://millionrounds.com/fund/rick-webb) - [*SM* Steve Martocci](https://millionrounds.com/fund/steve-martocci) - [*PH* Peter Hershberg](https://millionrounds.com/fund/peter-hershberg) - [*RB* Richard Branson](https://millionrounds.com/fund/richard-branson) - [*BP* Bob Pasker](https://millionrounds.com/fund/bob-pasker) ## Segment by segment ### VC firms 38 investors - [**Index Ventures**](https://millionrounds.com/fund/index-ventures) VC firm United Kingdom 5 backed - [**SV Angel**](https://millionrounds.com/fund/sv-angel) VC firm United States 5 backed - [**Union Square Ventures**](https://millionrounds.com/fund/union-square-ventures) VC firm United States 3 backed - [*LV* **Lerer Ventures**](https://millionrounds.com/fund/lerer-ventures) VC firm United States 3 backed - [*JS* **Joshua Schachter**](https://millionrounds.com/fund/joshua-schachter) VC firm - 3 backed - [**Andreessen Horowitz**](https://millionrounds.com/fund/andreessen-horowitz) VC firm United States 3 backed - [**Shasta Ventures**](https://millionrounds.com/fund/shasta-ventures) VC firm United States 3 backed - [**Slow Ventures**](https://millionrounds.com/fund/slow-ventures) VC firm United States 3 backed ### Angels and networks 7 investors - [**Techammer**](https://millionrounds.com/fund/techammer) Angel network United States 2 backed - [*JI* **Joi Ito**](https://millionrounds.com/fund/joi-ito) Angel investor United States 2 backed - [*RW* **Rick Webb**](https://millionrounds.com/fund/rick-webb) Angel investor - 2 backed - [*SM* **Steve Martocci**](https://millionrounds.com/fund/steve-martocci) Angel investor - 2 backed - [*PH* **Peter Hershberg**](https://millionrounds.com/fund/peter-hershberg) Angel investor - 2 backed - [*RB* **Richard Branson**](https://millionrounds.com/fund/richard-branson) Angel investor United States 2 backed - [*BP* **Bob Pasker**](https://millionrounds.com/fund/bob-pasker) Angel investor United States 2 backed **How this map is made.** Every investor here has backed two or more of the same startups as O'Reilly AlphaTech Ventures, in rounds we track. Grouped by kind, each ranked by how many startups it shares with O'Reilly AlphaTech Ventures. 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 O'Reilly AlphaTech Ventures? 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