Marc Andreessen
Venture capital investing · Menlo Park, California
Net worth
$18.5B
Today
+$8M+0.04%Past month
+$16.6B+879.98%As of Nov 11, 2026, 1:50 PM EST
Marc Andreessen runs influential Silicon Valley venture capital firm Andreessen Horowitz, whose successful bets include Instagram, Oculus VR and GitHub. He cofounded the VC firm in 2009 alongside Ben Horowitz. It now manages more than $100 billion in assets and raised over $15 billion in new funds in January 2026. Andreessen and Horowitz worked together at Netscape, which Andreessen cofounded with fellow billionaire Jim Clark before selling the web browser startup to AOL in 1998 for $4.2 billion. The pair then cofounded data center software company Opsware (formerly Loudcloud), which they sold to HP for $1.6 billion in 2007. Andreessen's most successful personal investment was as a seed investor in Facebook.
Net worth over time
Principal holdings
4 positions| Company | Industry | Share | Value |
|---|---|---|---|
Private and other holdings | Finance & Investments | 98.5% | $18.3B |
Coinbase Global NASDAQ: COIN | Finance & Investments | 0.8% | $147M |
Samsara Inc. NYSE: IOT | Finance & Investments | 0.5% | $94M |
Meta Platforms NASDAQ: META | Finance & Investments | 0.2% | $32M |
Also known for
- His wife Laura is daughter of the late billionaire John Arrillaga (d. 2022), who built his fortune in Silicon Valley real estate.
- While still in college, Andreessen co-created the highly influential Mosaic Internet browser.