HSBC’s $43 Billion Azure Case Still Runs Through Amazon

HSBC says Anthropic could be worth $43 billion a year to Microsoft Azure by 2030. That figure is a 30% slice of a compute bill Amazon already moved to lock down.

Stephen Bersey, the HSBC analyst behind the May 27, 2026 note, still rates Microsoft a Buy with a $571 price target. He also wrote that Microsoft now books a “minimal” amount of Anthropic revenue. The gap between those two sentences is the whole story.

Three Assumptions Sit Under HSBC’s $43 Billion

Bersey’s path to $43 billion a year is three multiplications, not a signed invoice. He put Anthropic at about $241 billion of revenue in 2030, against his own estimate of less than $5 billion in 2025. He then assumed compute would eat 60% of that 2030 sales base, or $144 billion a year for the clouds that host Claude.

Azure’s piece, in his model, is 30% of that pool, “in line with our 2030 market share estimates.” Thirty percent of $144 billion is how he gets the $43 billion Azure revenue case. None of those three steps is a contract Microsoft can take to a bank.

THE HSBC CHAIN

• 2030 sales: Bersey models about $241 billion of Anthropic revenue, versus less than $5 billion in 2025.
• Compute take: He assumes 60% of that sales base is spent on cloud, or $144 billion a year.
• Azure cut: A 30% share of that pool is $43 billion a year for Microsoft by 2030.
• Today’s take: He said Microsoft currently earns a “minimal” amount from Anthropic.

Anthropic’s own numbers already run hotter than that 2025 base. On April 20, 2026, the company said its run-rate revenue had surpassed $30 billion, up from about $9 billion at the end of 2025. A faster Claude ramp helps the 2030 sales line. It does not hand Azure 30% of the associated power bill.

Microsoft Signed $30 Billion and One Gigawatt

The number on paper is smaller, and it is a lifetime spend, not an annual rent. On November 18, 2025, Microsoft, NVIDIA, and Anthropic announced the partnerships that Bersey later stretched into 2030.

Anthropic $30 billion of Azure compute capacity is the purchase commitment in Microsoft’s own blog, plus extra capacity up to one gigawatt on NVIDIA Grace Blackwell and Vera Rubin systems. NVIDIA said it would invest up to $10 billion in Anthropic. Microsoft said it would invest up to $5 billion.

Customers of Microsoft Foundry gained Claude Sonnet 4.5, Claude Opus 4.1, and Claude Haiku 4.5. Microsoft also said Claude would keep running across GitHub Copilot, Microsoft 365 Copilot, and Copilot Studio. That is distribution. It is not $43 billion of Azure rent.

THE ANTHROPIC COMPUTE CALENDAR

1. November 18, 2025: Microsoft, NVIDIA, and Anthropic announce the Azure spend, the gigawatt option, and the equity checks.
2. April 20, 2026: Anthropic names AWS its primary training and cloud provider and pledges more than $100 billion over ten years for up to 5 gigawatts.
3. May 27, 2026: Bersey publishes the $43 billion-a-year Azure case.
4. June 29, 2026: Claude on NVIDIA GB300 Blackwell Ultra becomes generally available in Microsoft Foundry.
5. July 29, 2026: Microsoft closes fiscal 2026 with a $3.2 billion gain on its Anthropic investment and $678 billion of commercial remaining performance obligation.

Bersey also wrote that Anthropic was about 5% of Microsoft’s remaining performance obligations, versus OpenAI. Five percent of the $625 billion commercial backlog Microsoft reported on its fiscal 2026 second-quarter call is about $31 billion. That is the $30 billion Azure commitment showing up in the order book, not a second, hidden pipeline.

AWS, Trainium, and a $100 Billion Pledge

Amazon did not treat the Azure announcement as a changing of the guard. Four months later, Anthropic said it would keep AWS as its primary training and cloud provider for mission-critical workloads, and it put a much larger envelope behind that sentence.

The April 20, 2026 agreement commits Anthropic to spend more than $100 billion over the next ten years on AWS technologies and secures up to 5 gigawatts of new capacity. Nearly 1 gigawatt of Trainium2 and Trainium3 was due by the end of 2026. Anthropic said it already used more than one million Trainium2 chips and that more than 100,000 customers run Claude on Amazon Bedrock.

Amazon invested $5 billion in that round, with up to an additional $20 billion later, on top of $8 billion it had already put in. Andy Jassy, Amazon’s chief executive, tied the decade-long pledge to custom silicon, not to a guest listing on a rival cloud.

ANTHROPIC’S TWO HYPERSCALE CHECKS

Claude is still the only frontier model Anthropic says is sold on all three major clouds, with Google Cloud’s Vertex AI as the third listing. A listing is not a training cluster. HSBC’s 30% Azure share has to be won against a landlord that already has the 5 gigawatt envelope and the Trainium roadmap through Trainium4.

45% of the Backlog Still Traces to OpenAI

Microsoft’s order book still reads as an OpenAI story with an Anthropic footnote. On the fiscal 2026 second-quarter call, the company said approximately 45% of commercial remaining performance obligation was from OpenAI. That backlog sat at $625 billion. The November Anthropic commitment was called out as a bookings item, not as a rival pillar.

By the year ended June 30, 2026, commercial remaining performance obligation had risen 84% to $678 billion. Microsoft said that backlog grew 25% when OpenAI was excluded, and that all sequential commercial RPO growth in the fourth quarter came from customers outside frontier model labs. The concentration problem Bersey flagged did not migrate to Anthropic. It eased because other customers signed, while OpenAI remained the giant line item.

Amy Hood, Microsoft’s chief financial officer, said Microsoft Cloud revenue in the June quarter was $59.3 billion, up 27%. Satya Nadella, chairman and chief executive, said Azure revenue surpassed $100 billion for the first time in the fiscal year, with more than 30 million paid Microsoft 365 Copilot seats. Azure and other cloud services grew 43% in the quarter. Intelligent Cloud revenue was $39.3 billion, up 32%. A $43 billion Anthropic line in 2030 would be large even on that base. It would still be a new customer win, not a conversion of the OpenAI book.

What Azure Has to Build to Collect That Bill

Azure only collects Bersey’s $43 billion if it has the racks, the power, and the share. Microsoft already spends like a utility to keep Azure growing at 43%, and Anthropic’s 60% compute-to-sales assumption is a statement about how hungry Claude stays, not about how much margin Redmond keeps.

The November loop is familiar. Microsoft may put up to $5 billion into Anthropic, and Anthropic pledged $30 billion back onto Azure. NVIDIA’s up to $10 billion sits in the same circle, because the gigawatt is specified on Grace Blackwell and Vera Rubin gear. That is the same cash-in, cloud-out pattern that already binds Microsoft to OpenAI. It can be real demand. It can also be a round-trip that inflates both sides’ bookings.

WHAT STILL HAS TO GO RIGHT

• Share versus AWS: Azure has to take 30% of a 2030 compute pool after Anthropic named AWS the primary cloud and reserved 5 gigawatts there.
• The 60% burn: Bersey’s $144 billion cloud pool only exists if Anthropic still spends 60 cents of every revenue dollar on rented computers.
• Token demand: Usage-based bills have already pushed large buyers to treat coding tools as a budget line that can snap, which is the demand risk under that 60% ratio.
• Capacity: Microsoft has to keep delivering Azure growth while customer demand, by its own account, still exceeds supply.

If Claude gets cheaper per task, the sales line can still rise while the compute bill per dollar of revenue falls. That would be good for Anthropic’s margins and bad for a model that needs 60% of sales to show up as cloud spend. The $43 billion is not Copilot seats. It is Anthropic’s rent.

Claude Now Runs on GB300 in Foundry

The product side of the November deal is no longer a press release. On June 29, 2026, NVIDIA said Claude models in Microsoft Foundry were generally available on GB300 Blackwell Ultra GPUs, with Quantum-X800 InfiniBand underneath. Azure-native shops can now call Claude without leaving Foundry.

That is the distribution Microsoft actually shipped: model choice next to OpenAI, with Copilot remaining a Claude client as well. It is also the part of the deal that does not require Anthropic to move training off Trainium. Foundry inference can grow while Project Rainier and the 5 gigawatt AWS book still take the heavy runs.

Anthropic’s commitment to run its large language models on AWS Trainium for the next decade reflects the progress we’ve made together on custom silicon, as we continue delivering the technology and infrastructure our customers need to build with generative AI.

Andy Jassy, CEO, Amazon, in Anthropic’s April 20, 2026 announcement

Dario Amodei, Anthropic’s chief executive, said users now treat Claude as essential and that the company had to build infrastructure to match demand, including the more than 100,000 customers on AWS. He was speaking on the Amazon deal, not on Azure. The quote Microsoft still needs is the one where Anthropic calls Azure the primary training cloud. It has not said that.

The $3.2 Billion Mark Came From Equity

Microsoft’s June quarter already showed how Anthropic hits the income statement when it is not paying rent. The company recorded a $3.2 billion gain from its Anthropic investment, one of the discrete items that added $0.27 to diluted earnings per share against the April guide. Fiscal 2026 revenue was $331.8 billion, up 18%, and operating income was $155.2 billion, up 21%. The paper gain on the Anthropic stake is an equity mark. It is not Azure consumption.

Nadella’s year is still an Azure year. Full-year company revenue of $331.8 billion and a Cloud quarter of $59.3 billion dwarf anything Anthropic currently sends over the meter. Bersey is not arguing otherwise. He is arguing that a lab with a $30 billion-plus run-rate, if it keeps spending like a hyperscale tenant, can become a $43 billion Azure customer in 2030 if Microsoft takes nearly a third of that tenant’s cloud wallet.

Amazon already booked the larger pledge, the primary-provider label, and five times the gigawatts. Microsoft has Foundry, GB300, Copilot hooks, and a $30 billion commitment that already sits in remaining performance obligation. HSBC’s $43 billion a year only prints if Azure collects 30 cents of every compute dollar Anthropic spends in 2030.

Disclaimer: This article is news reporting and analysis of analyst estimates, company announcements, and earnings figures, and it is for information only. It is not investment advice, a recommendation to buy or sell Microsoft, Amazon, NVIDIA, or any other security, and it is not a forecast of Anthropic’s private valuation or a future public listing. Readers should consult a licensed financial adviser or other qualified investment professional before making decisions about shares, funds, or related derivatives. Figures, ratings, and contract statuses reflect the cited company statements and the May 27, 2026 HSBC note and may change with later filings, funding rounds, or revised analyst models.