Amazon’s outsized Anthropic IPO stake highlights cloud providers’ AI advantage

Anthropic’s IPO filing reveals a lopsided distribution of potential gains. While venture firms like Menlo Ventures and Sequoia are set for major returns, Amazon’s stake—largely tied to convertible notes and preferred stock—appears to be the most valuable among investors. Combined with Anthropic’s commitment to spend billions on AWS over the next decade, the arrangement raises questions about who benefits most from the AI company’s growth.

The ownership structure reflects Anthropic’s massive scale. At its $965 billion private valuation, even small percentage stakes translate to billions in value. This leaves traditional VC firms with holdings below the 5% threshold for principal stockholders, despite their substantial investments. Menlo Ventures, for example, reportedly holds about $14 billion—roughly 1.5% of the company, per Bloomberg. The dynamic differs from typical tech IPOs, where lead investors often control larger portions of the company.

Amazon’s position stems from its strategic investment strategy. Starting in 2023, Amazon committed to invest up to $4 billion in Anthropic, later expanding its stake through convertible notes—debt that converts to equity upon an IPO. As of June 30, Amazon held $6.2 billion in principal outstanding on these notes, representing Anthropic’s entire debt load. The notes’ value has grown significantly as Anthropic’s valuation rose, with Amazon’s filings showing a valuation of $97.9 billion for its holdings. The S-1 indicates these notes could convert into up to 1.84 billion shares, though a 12% cap on Anthropic’s “partially diluted” share count may limit Amazon’s immediate stake. The cap could potentially be adjusted, and any unconverted notes might remain outstanding for future conversion.

In addition to the notes, Amazon invested $10 billion in nonvoting preferred stock during Anthropic’s last two funding rounds, bringing its total investment to roughly $18 billion. Beyond equity, Anthropic has committed to spending at least $110 billion on AWS over the next decade, which could provide Amazon with ongoing revenue alongside any stock gains.

Google is also positioned for significant returns. Its stake has likely been diluted from an estimated 14% last year to around 5.6%, according to one analyst. Google’s recent investments and long-term cloud commitments with Anthropic suggest it will remain a key financial beneficiary. The S-1 notes that cloud providers, which also develop competing AI models, may not always share the same priorities as Anthropic.

For venture firms, the IPO represents a major payday, but the structure highlights a broader trend. Cloud providers appear to be using their infrastructure dominance to secure financial and strategic advantages in AI startups, through debt-like instruments and long-term contracts.

Sources: techcrunch.com