When a young company prepares to enter public markets, its filing reveals who truly stands to gain, and here the answer is not the venture investors who first believed in it but the corporations that became its suppliers and partners. Anthropic's disclosure shows that the firms that helped it grow have, through patient debt and preferred stock, positioned themselves to reap the largest rewards as its valuation climbs toward a public listing. The arrangement ties the fortunes of a frontier AI lab to the cloud giants that sell it computing power, a dependence the company itself acknowledges as a
VCs Stand to Win Billions on Anthropic's IPO, but Amazon Is Set to Make Far More
Backed a would-be rival early and now sell it the computing power it runs on
Mark
Why does it matter that no VC firm reaches 5%?
Mimi
Because it breaks the usual pattern. In most tech IPOs, the lead venture backers hold double-digit stakes. Here, Menlo's roughly $14 billion position is only about 1.5%.
Luke
Worth flagging that the Menlo figure comes from Bloomberg's recent reporting, not from the S-1 itself. The S-1 only tells us nobody crossed 5%.
Mark
So where does the money concentrate instead?
Mimi
With Amazon. It holds convertible notes with $6.2 billion in principal, which Amazon's own filings value at $97.9 billion, plus $10 billion in nonvoting preferred stock.
Luke
But the notes don't all convert automatically. A 12% cap on the partially diluted share count applies, and Amazon can waive it. How much converts at the IPO is not settled in what we have.
Mark
And the $72.4 billion charge on Anthropic's income statement?
Mimi
It reflects the growing value of what Anthropic owes Amazon. It's non-cash, so no money left the company.
Luke
Right, so it is an accounting effect, not a loss of cash. Don't read it as Anthropic burning that much.
Mark
What about Google?
Mimi
About 14% as of early last year per court filings, and $10 billion more in April. Anthropic has also committed at least $114 billion in cloud spending through 2033.
Luke
The current stake is an estimate. PitchBook's Harrison Rolfes puts it near 5.6%, but that's one analyst's number, not a disclosed figure.
Mark
What's the underlying tension?
Mimi
Amazon and Google are investors, suppliers and builders of rival models. The S-1 itself warns they may not always want what Anthropic wants.
Der Puls
- No venture capital firm holds 5% of Anthropic, a striking departure from the double-digit stakes usually held by backers of tech startups going public.
- Amazon's convertible notes, valued at $97.9 billion, and $10 billion in new preferred stock position it as likely the largest financial winner of the offering.
- A 12% conversion cap and waiver rights give Amazon a controlled but powerful path to turning debt into shares as the company's value rises.
- Anthropic's $72.4 billion non-cash accounting charge and its $110 billion AWS commitment show how deeply its finances are knotted to its cloud suppliers.
- Google, also a cloud provider and rival model builder, faces the same tension, and the filing's own warning about conflicting interests will shape how investors read the listing.
When a young company prepares to enter public markets, its filing reveals who truly stands to gain, and here the answer is not the venture investors who first believed in it but the corporations that became its suppliers and partners. Anthropic's disclosure shows that the firms that helped it grow have, through patient debt and preferred stock, positioned themselves to reap the largest rewards as its valuation climbs toward a public listing. The arrangement ties the fortunes of a frontier AI lab to the cloud giants that sell it computing power, a dependence the company itself acknowledges as a risk. Whether that alliance proves a shared inheritance or a quiet conflict will become clearer once the shares begin to trade.
Anthropic's S-1 contains a table that lists every holder of 5% or more of the company's stock, and no venture capital firm appears in it. Menlo Ventures, Sequoia, Sound Ventures and Spark Capital all stand to see billions when the company goes public, yet none clears that threshold. In most tech IPOs, lead backers hold double-digit shares. Here they do not.
The reason is scale. At a private valuation of $965 billion, a single percent is worth nearly $10 billion, and even Menlo's roughly $14 billion position amounts to only about 1.5%.
The larger stakes belong to strategic partners who are also Anthropic's suppliers. Amazon, which began backing the company in 2023, is likely the biggest financial beneficiary. Much of its money came as convertible notes, debt that turns into shares at a listing, and those notes were worth $97.9 billion by June 30. The rise has been recorded on Anthropic's books as a non-cash charge of $72.4 billion in the first half of 2026, though no money left the company. A cap limits Amazon's conversion to 12% of the partially diluted share count, though it can waive the limit. Adding $10 billion in preferred stock, its total investment reaches about $18 billion, and Anthropic has committed at least $110 billion to AWS over the next decade.
Google also stands to gain from both the listing and its cloud contracts, with commitments of at least $114 billion through 2033, though its stake has likely been diluted to around 5.6%.
The venture firms have little to complain about. Yet the biggest winners may be the tech giants that backed a future rival and now sell it the computing power it runs on. The filing itself warns that these providers also build competing AI models and may not always share Anthropic's goals. That tension will be the thing to watch once the shares begin trading.
Anthropic's S-1 contains a table that, by custom, lists every holder of 5% or more of the company's stock. No venture capital firm appears in it. Menlo Ventures, Sequoia, Sound Ventures and Spark Capital are all expected to see their stakes return billions when the company goes public, yet none of them clears that threshold. In a typical tech IPO, the lead venture backers hold double-digit percentages of the startup. Here they do not.
The explanation is scale. At Anthropic's private valuation of $965 billion, a 1% stake is worth nearly $10 billion. Menlo's position, recently reported by Bloomberg at roughly $14 billion, works out to only about 1.5% of the company. Even a stake worth that much is a small slice.
The larger holdings sit with strategic partners, companies that are also Anthropic's business partners. Amazon is the clearest case, and it is likely the single largest financial beneficiary of the offering. It first backed Anthropic in 2023 with a commitment to invest up to $4 billion, and has put in billions more since. Much of that money came as convertible notes, a form of debt that turns into shares at an IPO or sale, rather than as stock up front.
As of June 30, the S-1 says, Amazon held notes with $6.2 billion in principal outstanding, which is Anthropic's entire debt load. But the shares those notes convert into grew far more valuable with each funding round at a higher valuation. Amazon's own filings put the value of its note holdings at $97.9 billion as of that date.
That rise shows up on Anthropic's books. The company must record the growing value of what it owes, and it did so on its income statement under a line called "change in fair value of convertible notes, derivative liabilities, and SAFEs." The line totaled $72.4 billion for the first half of 2026. The charge is non-cash, so no money left the company.
The notes could convert into as many as 1.84 billion shares, according to the S-1, but a cap limits Amazon to 12% of Anthropic's partially diluted share count, which includes some shares not yet issued, such as stock options. Amazon can waive the cap. Any notes that cannot convert stay outstanding and convert in later quarters under the same limit.
The notes are only part of the picture. In the second quarter, Amazon also invested $10 billion in nonvoting preferred stock, according to its quarterly report for the period ended June 30, putting $5 billion into each of Anthropic's last two funding rounds. Added to the $8 billion it put into the notes from 2023 through 2025, Amazon's total investment comes to about $18 billion. It also stands to keep earning revenue from Anthropic, which has committed to spend at least $110 billion on AWS over the next 10 years.
Google is positioned for a windfall too, from both the listing and its cloud deals. Court filings reported by The New York Times showed it held about 14% of Anthropic as of early last year, and it has invested more since, including $10 billion in April. Later large funding rounds probably diluted that stake, and PitchBook analyst Harrison Rolfes told TechCrunch he estimates it is now closer to 5.6%. Google has also secured at least $114 billion in cloud commitments from Anthropic through 2033.
The venture firms have little to complain about. But the S-1 suggests the biggest winners may be tech giants that backed a would-be rival early and now sell it much of the computing power it runs on. The filing itself warns that some of those cloud providers also build rival AI models and may not always want what Anthropic wants. That tension is the thing to watch once the shares begin trading.
Bemerkenswerte Zitate
He estimates Google's current stake at closer to 5.6% after dilution from later funding rounds.— Harrison Rolfes, PitchBook analyst, to TechCrunch
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