Andreessen Horowitz

AH Capital Management, LLC
Andreessen Horowitz
Company typePrivate
IndustryVenture capital
FoundedJuly 6, 2009 (2009-07-06)
FoundersMarc Andreessen
Ben Horowitz
Headquarters
Menlo Park, California
,
U.S.
AUM$90 billion (as of Jan 2026)
Number of employees
>500 (2023)
Websitea16z.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. Its investments span the healthcare, consumer, cryptocurrency, gaming, fintech, education, and enterprise software (including cloud computing, security, and software as a service) industries.

As of July 2025, the company ranks first on the list of venture capital firms by assets under management, with US$46 billion.

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