Six Anthropic cofounders enter Forbes 400 with $15.5 billion each
Six of Anthropic’s co‑founders—Daniela Amodei, Dario Amodei, Tom Brown, Jack Clark, Jared Kaplan and Sam McCandlish—have been listed on the Forbes 400, each estimated at $15.5 billion for a total of $93 billion. Their fortunes swelled after a May funding round that more than doubled the value of their roughly 1.6 % stakes.
Key points
- Six Anthropic cofounders each valued at $15.5 billion, joining Forbes 400 with a combined $93 billion net worth.
- Anthropic’s Q2 revenue hit $11.6 billion, surpassing OpenAI’s $6.7 billion, and posted $559 million adjusted profit.
- Both Anthropic and OpenAI have filed confidential IPO paperwork, signaling potential public listings later this year.
Anthropic’s financial performance is accelerating: the company posted $11.6 billion in second‑quarter revenue, outpacing OpenAI’s $6.7 billion, and recorded a modest adjusted operating profit of $559 million. Both firms have filed confidential IPO paperwork, hinting at public listings later this year or early next, which could trigger significant tax obligations for thousands of employees.
The AI sector dominates the newcomer cohort on the Forbes 400, with 15 of 34 fresh entrants deriving wealth from artificial‑intelligence ventures, highlighting the industry’s growing economic clout.
The story so far
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Six Anthropic cofounders join Forbes 400 at $15.5 billion each
finance.yahoo.com · 15 September 2026
Six Anthropic cofounders made their debut on the Forbes 400 list of America's wealthiest people on Tuesday, with a combined net worth of $93 billion. Daniela Amodei, Dario Amodei, Tom Brown, Jack Clark, Jared Kaplan, and Sam McCandlish are each worth an estimated $15.5 billion, according to Forbes.
The six cofounders left OpenAI in 2021 to found Anthropic and have built the company into a significant competitor in the artificial intelligence industry, partly through the popularity of its Claude chatbot. Their fortunes rose in May, when Anthropic closed a funding round that more than doubled the estimated value of their individual stakes of roughly 1.6% each, according to Forbes. A seventh cofounder holds Canadian citizenship and does not appear on the list.
The Anthropic group ranked among the most prominent of 34 first-time entrants to this year's Forbes 400, which set a record minimum net worth of $4.4 billion, up from $3.8 billion in 2025. America's 400 wealthiest people are collectively worth $8 trillion, up from $6.6 trillion a year ago. The 34 newcomers account for $321 billion of that total.
The AI sector drove the largest share of new entrants, with 15 of the 34 newcomers drawing their wealth from the industry. OpenAI cofounder Greg Brockman topped the new members, debuting at No. 45 overall with an estimated $25.5 billion fortune. Robotics entrepreneur Brett Adcock ranked second among newcomers with an estimated $23.4 billion net worth, while investor Antonio Gracias, an early backer of multiple Elon Musk companies, placed third at $17.1 billion.
The Anthropic cofounders' arrival on the list follows a period of rapid growth at the company. Anthropic posted $11.6 billion in revenue in the second quarter, surpassing OpenAI's $6.7 billion for the same period — the first time Anthropic had led its rival on that measure. Anthropic also recorded a small adjusted operating profit of $559 million in the quarter, according to Forbes.
Both Anthropic and OpenAI have submitted confidential IPO filings to the Securities and Exchange Commission, a development that has drawn attention to the potential tax consequences for their employees. Thousands of prospective millionaires at the two companies face potential tax obligations ahead of expected public offerings later this year or early next.
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