What does Ben Horowitz invest in?
Ben Horowitz invests most often at Seed and Series B (89% of the rounds on record).
1 cheques in the last 12 months
Mostly Seed and Series B: 89% of its rounds
4 exits from the portfolio
Every round we can evidence, newest first11 appearances
1 round
1 round
1 round
4 rounds
3 rounds
1 round
An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.
Companies it backed that were later bought or listed4 in all
An exit counts when it came after the firm's first round in the company. From historical deal records.
The investors most often in the same rounds as Ben Horowitz. A count of rooms they were both in, not a relationship either has claimed.
The latest companies Ben Horowitz put money into.
3 books written by people at Ben Horowitz: Ben Horowitz.

The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers―Straight Talk on the Challenges of Entrepreneurship
Ben Horowitz · 2014
4.19 from 114,702 ratings on Goodreads
A lot of people talk about how great it is to start a business, but only Ben Horowitz is brutally honest about how hard it is to run one. In The Hard Thing About Hard Things, Ben Horowitz, cofounder of Andreessen Horowitz and one of Silicon Valley's most respected and…
What You Do Is Who You Are: How to Create Your Business Culture
Ben Horowitz · 2019
4.00 from 8,251 ratings on Goodreads
Ben Horowitz, a leading venture capitalist, modern management expert, and New York Times bestselling author, combines lessons both from history and from modern organizational practice with practical and often surprising advice to help executives build cultures that can weather…

Good Product Manager/Bad Product Manager
Ben Horowitz · 2007
4.31 from 103 ratings on Goodreads
This document focuses specifically on product management in the context of a "divlet" [small division] in AOL. Related key assumptions are that there is a corresponding "business owner" in each of the brands, and that the "products" are generally online services intended for…
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6 episodes naming Ben Horowitz in the title, and 4 more that mention it.

What It Takes to Win as a Founder | Ben Horowitz
MentionsBen HorowitzAndrew Chen

The Frontier Ideas a16z Wants to Fund | Marc Andreessen, Ben Horowitz & Chris Dixon

What Makes a Great Entrepreneur? | Ben Horowitz on Vintage x Vintage
MentionsBen Horowitz

Why a16z is Building a New School for the AI Era | Ben Horowitz
MentionsBen Horowitz

Nas, Grandmaster Caz, Steve Stoute & Ben Horowitz on Paying Hip-Hop’s Pioneers Their Due
WithSteve Stoute
MentionsBen Horowitz

Who Grades the AI Models? | Ben Horowitz & Rayan Krishnan
MentionsBen HorowitzErik Torenberg

Amazon CEO Andy Jassy on the $220 Billion AI Buildout

CoreWeave Crash, AI Trade Cracks, Anthropic IPO Red Flags, Bill Gates Doomer

AI Can Write Code. Why Isn’t Software Better?

Greg Brockman on Why OpenAI Says We’re Entering the AGI Era
Ben Horowitz invests most often at Seed and Series B (89% of the rounds on record).
11 investments on record, 1 of them in the last 12 months. The most recent was in Oct 2026.
Its most recent investments on record: Echelon (Undisclosed round, Oct 2026).
The median round it joins is $3.0M.
Rarely, if at all: none of its 11 investments on record names it as the lead.
Most of the companies it backs are in the United States (91%) and Saudi Arabia (9%).
Yes: it is actively investing, with 1 investments in the last 12 months.
Most often Marc Andreessen (9 rounds together), Ron Conway (3 rounds together) and SV Angel (3 rounds together).
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Built from the rounds we watched, its filings and its own website, refreshed every night. How we count · Report a correction · Is this your firm? Claim it