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Andreessen Horowitz - Wikipedia
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Good(3)Good quality. Reputable source with community review or editorial standards, but less rigorous than peer-reviewed venues.
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Relevant to AI safety discussions primarily because a16z and its founders are prominent voices opposing AI regulation; understanding their institutional background provides context for industry debates on AI governance.
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Summary
Wikipedia overview of Andreessen Horowitz (a16z), a major American venture capital firm founded in 2009 by Marc Andreessen and Ben Horowitz. With $90 billion AUM, the firm is one of the largest VCs globally and is a significant investor in AI companies, crypto, and tech startups. The firm's investment decisions and public statements on AI development have made it an influential voice in debates about AI policy and governance.
Key Points
- •Founded in 2009 by Marc Andreessen and Ben Horowitz, headquartered in Menlo Park, California with over $90 billion AUM.
- •One of the most influential VC firms in AI and tech, investing across healthcare, crypto, fintech, enterprise software, and AI startups.
- •Marc Andreessen has been a vocal proponent of accelerationist AI development, opposing many AI safety regulations.
- •a16z's investment portfolio and public policy positions make it a key stakeholder in debates around AI governance and deployment.
- •The firm has backed numerous AI companies, giving it significant influence over which AI capabilities receive major funding.
Cited by 1 page
| Page | Type | Quality |
|---|---|---|
| Marc Andreessen | Person | 58.0 |
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Andreessen Horowitz - Wikipedia
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From Wikipedia, the free encyclopedia
American venture capital firm
AH Capital Management, LLC Trade name Andreessen Horowitz Company type Private Industry Venture capital Founded July 6, 2009 ; 16 years ago  ( 2009-07-06 ) Founders Marc Andreessen
Ben Horowitz Headquarters Menlo Park, California , U.S. AUM $90 billion (as of Jan 2026) [ 1 ] Number of employees >500 [ 2 ] [ 3 ]  (2023) Website a16z .com
Andreessen Horowitz (also known as a16z ) is an American privately-held venture capital firm headquartered in Menlo Park, California , United States. It was founded in 2009 by Marc Andreessen and Ben Horowitz .
Andreessen Horowitz invests in both early-stage startups and established growth companies . [ 4 ] Its investments span the healthcare, consumer, cryptocurrency, gaming, fintech , education, and enterprise software (including cloud computing , security, and software as a service ) industries. [ 5 ]
As of July 2025, the company ranks first on the list of venture capital firms by assets under management , with US$46 billion. [ 6 ]
Founding and partnering
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Marc Andreessen ( left ) and Ben Horowitz ( right ) are the company's founders.
Between 2006 and 2010, Marc Andreessen and Ben Horowitz actively invested in technology companies . Both separately and together, they invested $4 million in 45 startups, including Twitter . [ 7 ] During this time, the two became known as " super angel " investors. [ 7 ]
On July 6, 2009, Andreessen and Horowitz launched their venture capital fund with an initial capitalization of $300 million. [ 8 ] In November 2010, at a time when the field of venture capitalism was contracting, the company raised an additional $650 million for a second venture fund. [ 8 ] [ 9 ] In less than two years, the firm was managing a total of $1.2 billion under the two funds. [ 5 ]
As of March 27, 2014, the firm was managing $4 billion in assets following the closing of its fourth fund at $1.5 billion. [ 10 ]
In addition to Andreessen and Horowitz, the firm's general partners include Jeff Jordan , Chris Dixon , Martin Casado , and Andrew Chen. [ 11 ] [ 12 ] [ 13 ] [ 14 ] [ 15 ] Ex- VMware CEO Raghu Raghuram joined the firm as general partner in October 2025. [ 16 ] Margit Wennmachers served as operating partner from 2010 to July 2025, when she became partner emeritus. [ 17 ] [ 18 ] [ 19 ]
In March 2019, it was reported that Andreessen Horowitz was opening an office in San Francisco . [ 20 ]
In January 2022, Andreessen Horowitz raised $9 billion for its venture capital, growth-stage, and b
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