Amazon's Anthropic stake could top $400 billion at $2 trillion IPO

Anthropic's reported $2 trillion IPO valuation would value Amazon's 21 percent stake at roughly $420 billion, a 32-fold return on the $13 billion the e-commerce giant has invested since 2024.

"The bigger Anthropic gets, the better it is for Amazon," said Patrick Sanders, a contributing analyst at The Motley Fool.

Amazon's stake was valued at $190.4 billion at the end of June, including $97.9 billion in convertible notes and $92.5 billion in nonvoting preferred stock, according to Amazon's quarterly filings. That figure was based on a May 2026 funding round that valued Anthropic, the developer of the Claude large language model, at $965 billion. Secondary markets have since pushed the valuation to $1.2 trillion in early July and $2 trillion or more in August, ahead of a potential listing as early as October.

At a $2 trillion valuation, Amazon's Anthropic stake would equal nearly 15 percent of the company's $2.814 trillion market cap, up from 3.4 percent at the end of March. An IPO would let Executive Chairman Jeff Bezos and Chief Executive Andy Jassy monetize the position to fund Amazon's AI build-out — or book large paper declines if the valuation craters.

A $13 billion bet that kept compounding

Amazon invested $8 billion in Anthropic in 2024 and added $5 billion this year, giving it a reported 21 percent stake in the AI start-up. The position has grown from $74.2 billion at the end of March to $190.4 billion by June 30, then to an estimated $252 billion at a $1.2 trillion valuation and $420 billion at $2 trillion, according to Amazon filings and Macrotrends data.

The valuation surge tracks Anthropic's accelerating revenue. The company generated $11.5 billion in second-quarter revenue, up 14-fold from $787 million a year earlier, and reached an annualized run-rate above $47 billion in May, according to Bloomberg data. Anthropic submitted a confidential S-1 filing to the Securities and Exchange Commission in June and is working with Morgan Stanley, Goldman Sachs and JPMorgan Chase on the listing.

What a $2 trillion price tag demands

A $2 trillion valuation would surpass the $1.77 trillion record set by SpaceX when it went public in June, making Anthropic the largest IPO in history. The price implies revenue expectations for 2028, according to Bank of America Securities strategists, and requires growth to hold near triple digits even as Chinese open-source rivals such as Moonshot AI's Kimi compete on price.

For Amazon, the stake has become a swing factor in its own valuation. The position equaled 7.4 percent of Amazon's market cap at the end of June and could approach 15 percent if the IPO prices at $2 trillion. Amazon's core business generated $200.6 billion in second-quarter revenue and $62.6 billion in net profit, against a market value of about $2.86 trillion.

The listing would also test secondary-market liquidity. OpenAI, valued at roughly $852 billion in secondary trading, is expected to follow Anthropic to the public market, and investors have warned that two mega-IPOs could drain hundreds of billions of dollars from equities. Anthropic's executives have not confirmed a valuation target, and the final price will depend on investor demand when the deal launches.

This article is for informational purposes only and does not constitute investment advice.