How much is Ben Horowitz Worth? Ben Horowitz Net Worth in 2026

By the Alux Research Team. How we estimate net worth

Ben Horowitz’s net worth is estimated at $3.4 billion as of November 2026. A 2012 profile said the six main partners at Andreessen Horowitz had pledged half of their future venture income to charity. It didn’t name them, so his place among the six is our assumption. The public estimates we read don’t mention it, and in our model that one line takes about $1.2 billion off the total.

Net worth	$3.4 billion (rough estimate, range $2 billion to $8 billion)
Born	January 13, 1966, London, England
Age	60
Country	United States
Known for	Co-founding Andreessen Horowitz and Opsware, The Hard Thing About Hard Things
Main income sources	Carried interest and fees at a16z, returns on his own investments
Opsware stake in 2007	5,936,143 shares, 5.5 percent

How much is Ben Horowitz worth in 2026?

We estimate Ben Horowitz is worth about $3.4 billion, with a range of $2 billion to $8 billion. This is a rough estimate: the firm is private and has never disclosed who owns what. The Opsware sale is on file with the SEC and fund results have been reported from leaked decks. His share of them is our assumption.

Public estimates run from under $2 billion to about $18 billion. The biggest reason is how each treats paper gains in the funds, including whether he gets credit for all of them before tax and before that charity pledge. No fund’s books are public, so nobody outside can settle this.

How we got to $3.4 billion

The two carry rows use the same three assumptions as our Marc Andreessen page: a 20 percent share of the firm’s carry for him, half of it pledged to charity, and 35 percent tax on the half he keeps.

Source	Our estimate	What it rests on
a16z management company stake	$1.68 billion	Our assumption: 30 percent of a firm worth 8 times its fees. A Fast Company author estimated fees of about $700 million for 2025, on standard terms, which gives $5.6 billion.
Paper gains in the funds	$0.81 billion	Our assumption: $50 billion of unrealised gains, about half of the more than $106 billion in assets reported as of March 2026. That total isn’t defined and would include undrawn money, such as most of the $15 billion raised that January, plus money still held at cost. Carry at 25 percent is $12.5 billion, his 20 percent is $2.5 billion, then the pledge and tax.
Carry already paid out	$0.41 billion	Investors got $25.4 billion net from 2011 to August 2025. At one-third of that, the firm earned $8.47 billion. Fees were put at no less than 25 percent of revenue, so carry is at most 75 percent, or $6.35 billion. His 20 percent is $1.27 billion, then the pledge and tax.
Gains on his own money in the funds	$0.4 billion	Our assumption: $100 million invested at 5 times, counting only the $400 million gain, since the principal came from the other rows.
Opsware sale, 2007	$0.05 billion	5,686,140 shares and options at $14.25 is $81 million. We keep 60 percent after option costs and tax, which is about $49 million.
Total	$3.4 billion	Rounded from $3.35 billion. We leave out his books as too small to change it, and treat living costs as covered by fees.

The pledge, and what it does to the math

A 2012 profile in Worth said the six main partners pledged half of their future venture income to charity. It didn’t name them, so his place among the six is our assumption. We found no record of how much has been paid, and we also assume the promise is kept in full and that the gifts escape tax.

Here is the sum. His assumed share of carry is $1.27 billion paid and $2.5 billion on paper, or $3.77 billion. Taxed at 35 percent with no pledge, that leaves $2.45 billion. With the pledge it leaves $1.23 billion. So we calculate the pledge costs him about $1.2 billion. Remove both the pledge and the tax across the whole table and the total becomes about $5.9 billion, about 1.8 times our figure.

Even that doesn’t reach the top public numbers. On our inputs, getting to about $18 billion before any tax or pledge would need him to hold about 84 percent of all carry, which is implausible for a firm with many partners. So those estimates must assume much larger fund gains than our $50 billion, and they could be right: the $106 billion figure predates SpaceX’s June 2026 listing. Each 5 points of carry share moves our figure by about $0.31 billion. The ends of our range come from the same sums: a 10 percent carry share and a 15 percent stake in the firm give about $1.9 billion, while a 30 percent carry share with no pledge and no tax gives about $7.8 billion.

$81 million from the Opsware sale

Everything starts with Loudcloud, co-founded in September 1999 and taken public on March 9, 2001. He sold the managed services business to EDS for $63.5 million in 2002 and kept the software, renamed Opsware. HP paid $1.6 billion in cash in 2007, at $14.25 a share against a $6 IPO price.

The May 2007 proxy statement lists him with 5,936,143 shares, 5.5 percent of the company. Of those, 3,828,850 sat in a family trust, which we credit to him because the proxy counts it as his, 250,003 in children’s trusts that we leave out, and 1,857,290 were options whose exercise cost reduces the payout. His salary that year was $350,000. The HP sale made him rich by most standards, and it is now about 1.5 percent of our estimate.

The firm’s numbers are large and getting larger

Andreessen Horowitz opened on July 6, 2009 with $300 million. It raised $15 billion across five funds in January 2026, and 36Kr reported another $5 billion by August and more than $106 billion in assets as of March 2026. The same report, citing a presentation obtained by Eric Newcomer, gives $25.4 billion in net proceeds paid to investors from 2011 to August 2025. With reinvested capital and the partners’ share it reaches $37 billion. That $11.6 billion gap, by our math, leaves room for the $8.47 billion of firm earnings we assume.

The terms are older than the money. Worth reported in 2012, citing one limited partner, that a16z got a 30 percent carry on its $1.5 billion fund, and noted that was the top of a sliding scale. We use 25 percent for the larger funds raised since. Fast Company’s author estimated a16z’s own earnings at between one-third and one-half of what it returned to investors, stressing the many assumptions involved, and we take the low end. The same author put fees at no less than 25 percent of that revenue, which is why carry gets 75 percent. Newcomer reported in September 2025 that the $900 million Fund III was held at 9.4 times net. That is why we allow 5 times on his own money, a lower figure because most later funds are younger.

Three events would move this page soon: more SpaceX share sales, since a16z backed it before the June 2026 listing that 36Kr valued at $1.8 trillion; proceeds from Cursor, which the firm reportedly owned 10 percent of when SpaceX bought it for $60 billion; and an OpenAI listing, which 36Kr expects next year. Our fee row is a 2025 estimate from before the $20 billion raised in 2026, so it should rise if those terms hold.

Ben Horowitz net worth FAQ

What is Ben Horowitz’s net worth?

We estimate about $3.4 billion as of November 2026, in a range of $2 billion to $8 billion. Most of it is his assumed share of Andreessen Horowitz’s fees and carry.

How much did Ben Horowitz make from selling Opsware to HP?

The 2007 proxy shows 5,936,143 shares and options. Leaving out 250,003 in children’s trusts, 5,686,140 at $14.25 is about $81 million before option costs and tax. We keep about $49 million.

How much does Andreessen Horowitz manage?

It was reported at about $90 billion in January 2026, and one report put it above $106 billion as of March 2026. Those are firm assets, not his.

Did Ben Horowitz pledge to give money away?

A 2012 profile said the six main partners pledged half of their future venture income to charity. It didn’t name them. We assume he is one and that the pledge holds, which lowers our estimate by about $1.2 billion.

How old is Ben Horowitz?

He is 60, born January 13, 1966, in London and raised in Berkeley, California. He joined Netscape in 1995 before co-founding Loudcloud in 1999.

Related profiles

• Marc Andreessen
• Reid Hoffman
• Peter Thiel
• Vinod Khosla
• John Doerr

How we estimate net worth

Our estimates are based on public reporting, company valuations, and deal and earnings figures all compiled in an internal valuation model. They are approximate, and figures change over time as new information emerges.

Last updated: November 2026.