Andreessen Horowitz (a16z) is a venture capital firm founded in 2009 by Marc Andreessen and Ben Horowitz. It is headquartered in Menlo Park, California. The firm invests in both early-stage startups and established growth companies. a16z's investments span various sectors, including healthcare, consumer, cryptocurrency, gaming, fintech, education, and enterprise software. As of January 2026, Andreessen Horowitz has over $90 billion in assets under management across multiple funds.
The firm's approach involves providing not only funding but also strategic guidance and operational support to its portfolio companies. a16z has invested in numerous high-profile companies, including Facebook, Twitter, Airbnb, Lyft, Slack, Coinbase, and Okta. Recent news indicates a16z is increasingly involved in shaping AI policy and continues to invest heavily in AI-related startups, including leading a $5 million pre-seed round for UAE-based proptech startup Smart Bricks.