At Anthropic’s IPO ceiling, cloud suppliers’ stakes would be worth $289 billion

Anthropic’s November 10 amended prospectus says Amazon and Google will hold a combined 3.71 billion Class N shares after its initial public offering and concurrent private placement. At the proposed top price of $78, those stakes would have an illustrative value of about $289.4 billion. That is share value at an assumed offering price—not cash paid, a guaranteed market value or a realized gain.

The same filing lists another 1.56 billion Class N shares issuable to Amazon when its convertible notes can convert without breaching an ownership cap. Counting those later, conditional shares at $78 would lift the illustration to about $411.4 billion. They are not part of Amazon’s immediate post-offering holding, so treating the larger number as a day-one stake would overstate the record.

The relationship matters because Amazon and Google are not only investors. They are major suppliers of the computing infrastructure Anthropic needs to train and serve its models. Anthropic warns that migrating between cloud providers can be costly and complex, and that its commercial relationships with major investors may create actual or perceived conflicts of interest.

That makes the central accountability question narrower than a claim of control: can supplier-investors with enormous economic stakes bargain at arm’s length over compute prices, capacity and product dependence—and can customers and shareholders see enough to judge the answer? The prospectus discloses the overlap, but it does not price the effect of those incentives on individual infrastructure contracts.

Anthropic reports about $900.9 billion in aggregate committed spending, substantially all tied to compute and infrastructure. The total combines contractual obligations with short-term and subsequent commitments and leases that have not started. About $451.6 billion is expected before the end of 2030, the remainder mainly from 2031 through 2045, and $70.7 billion is due within 12 months.

The headline commitment is not all unavoidable. The filing says $186.2 billion is subject to termination rights or conditions, and it excludes an estimated $150 billion to $175 billion under other arrangements without fixed dollar commitments. A significant portion supports Anthropic Direct, the company’s plan to own or lease more infrastructure itself.

The scale sits beside large growth and a large accounting loss. Anthropic reported $33.242 billion in revenue and a $104.039 billion net loss for the first nine months of 2026. Of that loss, $94.324 billion was fair-value expense primarily driven by the company’s rising enterprise value, so the GAAP loss should not be read as if all of it were cash consumed by operations.

Amazon’s own September-quarter filing shows how quickly private-company revaluations can swell on an investor’s books. Amazon reported a $92.5 billion carrying value for Anthropic preferred stock, a $146.2 billion fair value for Anthropic notes and a $140.3 billion unrealized gain on those notes. Those are Amazon’s accounting measures as of September 30, not cash proceeds and not the same thing as the post-IPO share illustration.

There are meaningful limits to the influence inference. Class N shares are nonvoting while held by Amazon and Google; Anthropic’s Long-Term Benefit Trust generally selects a majority of directors; and Anthropic is a public benefit corporation whose board must balance shareholder returns with its stated public benefit. The filing does not establish that either supplier directs Anthropic’s operations.

Anthropic also describes a multi-chip strategy spanning AWS Trainium, Google TPUs, Nvidia GPUs and AMD GPUs, while expanding Anthropic Direct. That diversification is contrary evidence to a simple lock-in story, even as the company itself says switching providers is difficult and its obligations remain concentrated in compute.

The observable finding is therefore an alignment risk, not proof of capture. At the IPO ceiling, two companies selling Anthropic critical infrastructure would hold stock worth roughly $289 billion on the filing’s immediate share counts. Readers and future shareholders can see the magnitude; they still cannot see enough contract-level detail to determine how those overlapping roles shape prices, capacity decisions or scrutiny of each supplier.