--- title: "Amazon's Stake in Anthropic Could Be Worth Over $400 Billion If the AI Start-Up's Reported IPO Valuation Holds. Should Jeff Bezos' Amazon Investors Care?" type: "News" locale: "en" url: "https://longbridge.com/en/news/296461664.md" description: "Amazon's $13 billion investment in AI startup Anthropic is valued at up to $420 billion if the company achieves a $2 trillion IPO valuation. This stake now represents nearly 15% of Amazon's market cap, significantly impacting its financial standing and offering potential windfalls for investors while highlighting the strategic importance of AI in Amazon's growth." datetime: "2026-08-20T09:01:58.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/296461664.md) - [en](https://longbridge.com/en/news/296461664.md) - [zh-HK](https://longbridge.com/zh-HK/news/296461664.md) generator: "portal-rs" --- # Amazon's Stake in Anthropic Could Be Worth Over $400 Billion If the AI Start-Up's Reported IPO Valuation Holds. Should Jeff Bezos' Amazon Investors Care? One of the most impressive investments at the corporate level in recent years has been **Amazon**'s (AMZN +2.46%) decision to take an early stake in Anthropic. The tech giant invested $8 billion in the artificial intelligence start-up in 2024, then followed that up with an additional $5 billion investment this year. Combined, those moves gave Amazon a reported 21% stake in Anthropic, the developer of the Claude chatbot and family of large language models. And they have paid off in a big way. According to Amazon's quarterly financial reports, its Anthropic stake was valued at $190.4 billion as of the end of June, including $97.9 billion in convertible notes and $92.5 billion in nonvoting preferred stock. But that calculation was based on a May 2026 funding round that valued Anthropic at $965 billion, and it's already being valued at much more than that. In early July, secondary markets were valuing Anthropic at $1.2 trillion in anticipation of the company going public as early as October.That would bring Amazon's stake to a whopping $252 billion. And more recent estimates from secondary markets put Anthropic's valuation at much higher -- $2 trillion or more. If Anthropic is successful in that offering (it submitted its confidential S-1 form to the Securities and Exchange Commission earlier this year to explore the possibility), Amazon's stake in it would be valued at roughly $420 billion. ![Amazon executive chairman Jeff Bezos.](https://imageproxy.pbkrs.com/https://g.foolcdn.com/image//query-b3A9cmVzaXplJnVybD1odHRwczovL2cuZm9vbGNkbi5jb20vZWRpdG9yaWFsL2ltYWdlcy84ODMyNTAvamVmZi1iZXpvc19hbWF6b25fYW16bl9leGVjdXRpdmUtY2hhaXJtYW5faW1hZ2Vzb3VyY2VfYW1hem9uY29tLWluYy0xLmpwZWcmdz0zODQw?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg) Amazon executive chairman Jeff Bezos. Image source: Amazon. ## The bigger Anthropic gets, the better it is for Amazon Amazon could book a huge profit from its Anthropic shares, should it ever want to divest itself of some of them. But considering how fast Anthropic is growing, it may be hard for Executive Chairman Jeff Bezos and CEO Andy Jassy to pull the trigger on a sale. Let's look at how the Anthropic stake has become an increasingly larger part of Amazon. By doing so, we'll look at four data points. | Metric | March 31, 2026 | June 30, 2026 | Estimated Valuation in July 2026 | Estimated Valuation in August 2026 | | ------------------------------------------------------ | --------------- | --------------- | -------------------------------- | ---------------------------------- | | Anthropic's estimated value | $353 billion | $965 billion | $1.2 trillion\* | $2 trillion\* | | Amazon's stake in Anthropic | $74.2 billion | $190.4 billion | $252 billion | $420 billion | | Amazon's market cap | $2.158 trillion | $2.566 trillion | $2.814 trillion\*\* | $2.814 trillion\*\* | | Anthropic stake as a percentage of Amazon's market cap | 3.43% | 7.42% | 8.95% | 14.92% | Data sources: Amazon filings, Macrotrends. \*Targeted IPO valuation. \*\*Amazon's market cap as of Aug. 17, 2026. For this example, we'll look at the value of Amazon's stake in Anthropic as reported by the company in its two most recent quarterly filings and compare it to the company's market cap. At the end of March, Anthropic accounted for only 3.4% of Amazon's value, but that share climbed to 7.4% by the end of June as Anthropic's valuation rose. If Anthropic achieved a $1.2 trillion valuation in its IPO -- a conservative estimate, given how secondary markets are pricing the start-up now -- its Anthropic shares would be nearly 9% of Amazon's value. But based on a $2 trillion valuation -- assuming that Amazon's market cap stays roughly at its current level for the next two months or so -- that Anthropic stake is providing nearly 15% of Amazon's value. Expand ![Amazon Stock Quote](https://imageproxy.pbkrs.com/https://g.foolcdn.com/image//query-b3A9cmVzaXplJnVybD1odHRwczovL2cuZm9vbGNkbi5jb20vYXJ0L2NvbXBhbnlsb2dvcy9tYXJrL0FNWk4ucG5nJnc9MTI4?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg) ## NASDAQ: AMZN Amazon Today's Change (2.46%) $6.39 Current Price $265.84 ### Key Data Points Market Cap $2.9TMarket cap calculated using publicly traded shares outstanding only. Does not include unlisted, private, or dual-class non-traded shares. Implied market cap may vary. Day's Range $258.58 - $266.40 52wk Range $196.00 - $287.20 Volume 81.6K Avg Vol 49.8M Gross Margin 50.77% With all this in mind, Amazon investors should be watching the Anthropic news closely. The bigger the AI startup gets, the more important it is to Amazon. Based on its current outlook, Bezos and Jassy could realize a windfall if they sell some or all of those shares -- money that could help fund Amazon's aggressive AI build-out. And if Anthropic's valuation craters, Amazon would be looking at big paper declines. Either way, though, Amazon's $13 billion investment has been amazingly profitable -- and it may just be in the opening stages. ### Related Stocks - [AMZN.US](https://longbridge.com/en/quote/AMZN.US.md) - [AMZD.US](https://longbridge.com/en/quote/AMZD.US.md) - [AMZU.US](https://longbridge.com/en/quote/AMZU.US.md) - [AMZW.US](https://longbridge.com/en/quote/AMZW.US.md) - [AMZZ.US](https://longbridge.com/en/quote/AMZZ.US.md) - [AMZO.US](https://longbridge.com/en/quote/AMZO.US.md) - [AMZY.US](https://longbridge.com/en/quote/AMZY.US.md) - [AZYY.US](https://longbridge.com/en/quote/AZYY.US.md) - [AMZP.US](https://longbridge.com/en/quote/AMZP.US.md) - [MAGX.US](https://longbridge.com/en/quote/MAGX.US.md) - [ANTH.NA](https://longbridge.com/en/quote/ANTH.NA.md) ## Related News & Research - [Amazon Stock (AMZN) Slips amid Plans to Invest $2 Billion in Latin America](https://longbridge.com/en/news/296643110.md) - [AMZN vs. GOOGL: Rosenblatt Sees One Tech Stock as the 'Most Resilient Leader'](https://longbridge.com/en/news/296515598.md) - [Twist Bioscience Stock Resilient Despite Scorpion Capital Short Report](https://longbridge.com/en/news/296396483.md) - [OpenAI and Anthropic Clash Over Massachusetts’ AI Safety Push](https://longbridge.com/en/news/296542178.md) - [Google Lost About $186 Billion After 4 of Its Top AI Researchers Left, but Sundar Pichai Says Google Will Be ‘A Founding Investor’ Anyway](https://longbridge.com/en/news/296636401.md) --- > **Disclaimer: This article is for reference only and does not constitute any investment advice.**