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HOME/PEOPLE/MARC ANDREESSEN
// PERSON

Marc Andreessen

ROLE CO-FOUNDER OF ANDREESSEN HOROWITZMENTIONS 3LAST SEEN JULY 31, 2026
// BIO

Marc Andreessen is an American businessman, former software engineer, and co-founder and general partner of the Silicon Valley venture capital firm Andreessen Horowitz. He is best known for co-creating the Mosaic web browser and co-founding Netscape, which was acquired by AOL for $4.2 billion. He also co-founded Loudcloud, later renamed Opsware, which sold to Hewlett-Packard for $1.6 billion. He serves on the board of Meta Platforms and several portfolio companies including Coinbase and Samsara.

Discussed in
// RECENT MENTIONS
// SIGNALS
3 SIGNALS
01
mention·The a16z Show·JULY 31, 2026

Mark at one point had posted the prompt that he used for Claude where it's like, you know, disagree with me, be very contrary — things like that. So I actually used that for a while. It was great. The funny story on this was I really enjoyed it because it would disagree with me very aggressively.

Source
02
mention·Sourcery·JUNE 20, 2026

I did this amazing series with Michelle Del Buono of A16Z Perennial, which is Mark and Ben's multifamily office. We did two episodes so far and it's all centered on the major wealth creation event that's happening right now.

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03
mention·All In·JUNE 19, 2026

It was that message that Mark Andreessen heard... they said, don't waste your time investing in different AI companies. We're going to anoint the winners. There's only going to be a couple of them. We're going to create a cartel

Source

AI-extracted from podcast / newsletter / paper summaries. May contain errors.