Anthropic’s seven co-founders each hold roughly 1.4 per cent of the company, its IPO filing revealed, giving them individual fortunes of more than $US13 billion ($18.5 billion).
asserted
filing → hold → billion
That vaults all of them, including siblings Dario and Daniela Amodei, among the top 300 people on the Bloomberg Billionaires Index, and makes them richer than well-known finance billionaires like Bill Ackman and Stan Druckenmiller.
asserted
them → vault → Ackman
The fortunes, which are based on Anthropic’s $US965 billion valuation in its last funding round, jumped from Bloomberg’s previous calculation of $US8 billion each.
asserted
which → base → billion
If Anthropic succeeds in reaching a $US2 trillion valuation in its initial public offering — a number that was previously floated by investors — they would rise to more than $US27 billion each before accounting for dilution from newly issued shares, according to Bloomberg’s wealth index.
uncertain
they → succeed → index
The founders’ net worth underscores the utter dominance of tech, and particularly artificial intelligence, in driving both the US stock market and wealth creation this year.
asserted
worth → underscore → market
Tech fortunes among the world’s 500 richest people gained a combined $US845 billion through the first nine months of 2026, while billionaires outside tech saw their average net worth shrink.
asserted
worth → gain → tech
In a letter to potential shareholders, Anthropic’s co-founders said that AI and Anthropic “represents one of the greatest economic opportunities in history.”
asserted
AI → say → history
All seven have pledged to dedicate 80 per cent of their personal equity in Anthropic to philanthropic causes, according to the filing.
uncertain
seven → pledge → filing
The size of the founders’ stakes belies their control over the company.
asserted
size → belie → company
Under Anthropic’s proposed governance structure, each founder remains a member of the Founder LLC — which controls a Class F share carrying 50.1 per cent of shareholder voting power — as long as they retain at least 2 per cent of the number of Class A shares they held when the company goes public.
asserted
company → propose → shares
That means a founder could dispose of 98 per cent of their existing stake and still retain an equal say with the other founders over how that controlling share is voted.
uncertain
share → mean → founders
The founders’ majority voting control is somewhat offset by Anthropic’s Long-Term Benefit Trust, however, which has the power to elect and remove four members of the company’s seven-person board.
asserted
which → vote → board
The trust is designed to continue indefinitely, while the founders’ special voting share will eventually expire once fewer than three qualifying founders remain, whether because of death, incapacity, resignation or because they have sold or given away more than roughly 98 per cent of the Class A shares they held at the IPO.
asserted
they → design → IPO
The trust is governed by five trustees, who largely select their own replacements.
asserted
who → govern → replacements
San Francisco-based Anthropic was started in 2021 by a group of former OpenAI employees who left following disagreements over the company’s future direction.
asserted
who → base → direction
Anthropic had an $US80.7 billion net loss on revenue of $US16.3 billion in the first six months of 2026, versus a $US13 billion net loss on revenue of $US1.2 billion in the same period last year, the filing shows.
asserted
filing → have → period
Anthropic confirmed that chief executive officer Dario Amodei and President Daniela Amodei sold some of their shares in the company’s tender offers in 2025 and 2026.
asserted
officer → confirm → 2025
Last year, Anthropic kicked off a $US157 million tender that saw both siblings unload some of their stock.
asserted
siblings → kick → stock
This year, Anthropic did a $US4.7 billion tender; the Amodeis, chief financial officer Krishna Rao, and Holden Karnofsky, the spouse of Daniela Amodei, all sold shares in that offering.
asserted
Amodeis → do → offering
Anthropic also paid $US5 million in regulatory filing fees on behalf of the Amodeis this year related to their acquisition and ownership of Anthropic securities.
asserted
Anthropic → pay → securities
It’s not just the founders who are getting rich: Anthropic’s employees and other option holders were sitting on about $US98 billion in potential gains from their stock options as of June, based on figures in the filing.
asserted
employees → ’ → filing
Those gains reflect how sharply the company’s value has risen since many employees received their stock options.
asserted
employees → reflect → options
Employees and other holders could buy the shares underlying their outstanding options at an average price of just $US2.89 a share as of June.
uncertain
Employees → buy → June
Altogether, exercising those options would cost about $US5.2 billion — while on paper, the underlying shares are estimated to be worth more than $US103 billion.
asserted
shares → exercise → paper
Anthropic also operates a donation-matching program that lets employees pledge a portion of their equity awards to eligible charities, with the company matching those donations in shares of its non-voting Class N stock.
asserted
company → operate → stock
In August, it recognised a $US2 billion expense tied to employee donations in that month that resulted in it issuing 28 million shares for matching purposes.
asserted
it → recognise → purposes
The co-founders’ pledge to donate 80 per cent of their equity isn’t eligible for the matching program.
asserted
pledge → donate → program
Bloomberg
The Business Briefing newsletter delivers major stories, exclusive coverage and expert opinion.
asserted
newsletter → deliver → stories
The Aporia
