Anthropic selected Morgan Stanley, Goldman Sachs, and JPMorgan Chase as lead underwriters for its initial public offering, Bloomberg reported June 3, moving the Claude maker's path to public markets into its most concrete phase yet. The selection came two days after Anthropic filed a confidential S-1 with the U.S. Securities and Exchange Commission, and three days after it closed a $65 billion Series H funding round that pushed its post-money valuation to $965 billion — briefly making it the most valuable private artificial intelligence company in the world, ahead of rival OpenAI's last disclosed valuation of $852 billion. Retail and institutional investors, enterprise customers evaluating long-term vendor contracts, and developers building on Claude's application programming interfaces all have a material stake in what the public prospectus will eventually reveal.
The company is targeting a listing as early as October 2026, according to multiple reports. No share count, price range, exchange, or ticker has been set; the offering remains subject to SEC review and market conditions. Goldman Sachs and Morgan Stanley are also leading the SpaceX IPO roadshow that began this week, and both banks are in discussions with OpenAI, which filed its own confidential S-1 on May 22 and is targeting a September debut. The result is an IPO race among three near-trillion-dollar companies competing for the same pool of institutional capital.
Goldman Sachs, Morgan Stanley, JPMorgan Lead Biggest AI Listing Attempt
The choice of all three firms signals a deal structured for institutional scale. More banks could still join the syndicate, people familiar with the underwriting discussions told Bloomberg. The company engaged law firm Wilson Sonsini to assist with public-market readiness; Wilson Sonsini managed Google's 2004 initial public offering.
Anthropic filed its confidential S-1 after closing the Series H — a round reported to be the largest single primary equity financing in private-market history. The round drew a broad coalition, with co-leaders including Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital, as well as Capital Group, Coatue, D1 Capital Partners, GIC, ICONIQ Capital, and XN. Additional investors included Baillie Gifford, Blackstone, Brookfield, D.E. Shaw Ventures, DST Global, Fidelity Management and Research, General Catalyst, Insight Partners, Jane Street, Lightspeed Venture Partners, T. Rowe Price, and Temasek, among others. Amazon contributed $5 billion as part of a larger infrastructure commitment; Samsung, SK Hynix, and Micron joined as strategic participants, reflecting how tightly Anthropic's growth is bound to hardware supply chains.
A confidential filing allows Anthropic to begin the formal SEC review process without disclosing its full financial data, legal risks, or capital structure to the public or its competitors. When the company files its public prospectus, it will need to contain audited financials, a full risk-factor disclosure, and details of the company's voting structure — information institutional investors will scrutinize before the roadshow begins.
Anthropic Revenue Run Rate Hit $47 Billion — With a Catch
Anthropic's run-rate revenue grew from approximately $9 billion at the end of 2025 to $30 billion in April 2026, and the company announced it crossed $47 billion in annualized revenue by late May — a more-than-fivefold increase in under six months. The growth was driven primarily by enterprise adoption and the breakout commercial success of Claude Code, the company's agentic coding assistant, which reached $2.5 billion in annualized recurring revenue as of February 2026.
Enterprise clients account for roughly 80 percent of total revenue, according to analysis by Sacra. More than 1,000 businesses were spending at least $1 million annually with Anthropic as of April 2026, a figure that roughly doubled in under two months. The company's commercial position was reinforced by data from the Ramp AI Index May 2026, which showed more U.S. businesses paid for Claude than ChatGPT in April 2026 — the first time Anthropic held that top position.
The headline revenue figure, however, carries an important accounting caveat that the public prospectus will need to address. Anthropic reports revenue from cloud reseller channels — Amazon Web Services Bedrock, Google Cloud Vertex AI, and Microsoft Azure — on a gross basis, counting total end-customer spending as its revenue and recording what it pays those platforms as expenses. Net-reporting peers, which count only their own margin as revenue, present fundamentally different headline numbers for businesses of otherwise comparable scale. The Futurum Group and Sacra both flagged this practice in published analyses; it means the reported $47 billion figure is not directly comparable to net-basis figures at competitors.
Analyst Gil Luria of DA Davidson made the competitive dynamic explicit: the company that files first gets to define how a frontier AI lab reports its financials in public markets — a structural advantage that could shape how investors value the entire sector.
How Claude Code Became the IPO's Growth Engine
Claude Code is not a code-completion tool in the mold of earlier coding assistants. It reads a full codebase, plans a sequence of actions, executes them using real development tools, evaluates the outcome, and adjusts its approach — with the developer retaining control over what gets committed but the execution loop running autonomously. Anthropic has said that the majority of its own production code is now authored by Claude Code. The average developer using the product was spending 20 hours per week with it as of April 2026, according to the company.
That level of adoption translates into deep enterprise integration — and deep enterprise integration translates into contract values that are difficult to unwind. Deloitte has made Claude available to more than 470,000 of its staff through Anthropic's Claude Partner Network, which launched in March 2026 with a $100 million annual commitment from Anthropic. Enterprise customers including Netflix, Spotify, KPMG, and Salesforce are among confirmed Claude Code users. The product generated roughly 20 percent of Anthropic's total revenue as of early 2026, but its growth rate has consistently outpaced total company revenue growth.
Infrastructure Commitments Create Competing Obligations
Anthropic signed infrastructure agreements with Amazon for up to five gigawatts of compute capacity, with Google and Broadcom for five gigawatts of next-generation Tensor Processing Unit capacity beginning in 2027, and with SpaceX for access to GPU clusters at the Colossus 1 data center in Memphis, Tennessee. SpaceX's own prospectus disclosed that Anthropic agreed to pay $1.25 billion per month for that access through May 2029 — an annualized commitment of $15 billion.
The scale of that infrastructure obligation has prompted questions about the durability of Anthropic's path to sustained profitability. The company told investors it expects to report a first quarterly operating profit of roughly $559 million in the second quarter of 2026, a figure cited by CNBC from a source familiar with the financials. Anthropic itself has been clear, however, that planned data center capital expenditure in the second half of 2026 and through 2027 is expected to push subsequent quarters back into operating losses. The first profitable quarter is real; investors should not interpret it as a structural shift in the cost base.
Active Litigation Adds Risk Factors Before the Prospectus Lands
A public prospectus will require Anthropic to disclose its material legal proceedings, and there are several. The most consequential is its dispute with the Department of Defense, which designated Anthropic a supply chain risk in March 2026 — a label previously used only for entities with foreign-government connections — after the company declined to allow Claude to be used for autonomous weapons systems without human oversight. The designation bars defense contractors from using Claude on Pentagon work. A federal appeals court in Washington denied Anthropic's request for a temporary halt to that designation; separately, a federal court in San Francisco granted Anthropic a preliminary injunction blocking enforcement against civilian government users. The two rulings left Anthropic excluded from DOD contracts while civilian government access remained intact.
Copyright litigation represents a second category. A class action brought by authors who alleged Anthropic trained Claude on pirated books reached a settlement that went before a federal judge for final approval in May 2026. Music publishers including Universal Music Group and Concord have pursued a related suit over alleged unauthorized use of song lyrics in model training. Reddit sued Anthropic in 2025, alleging the company scraped its platform more than 100,000 times after Reddit required payment for access; a federal judge sent the case back to California state court in March 2026. Anthropic has said it disagrees with the claims in each case and intends to defend itself vigorously.
A ProMarket analysis published in April 2026 also raised questions about whether Anthropic's Project Glasswing — a consortium of organizations using the company's Claude Mythos Preview model to identify security vulnerabilities in critical infrastructure — could face antitrust scrutiny from the DOJ and FTC, which launched a joint inquiry into AI competitor collaborations in February 2026.
Safety Governance as Investment Thesis
Anthropic is structured as a Public Benefit Corporation with a Long-Term Benefit Trust designed to place safety oversight above short-term investor pressure — a governance feature that differentiates it structurally from competitors organized as conventional for-profit entities. CEO Dario Amodei has consistently framed AI safety not as a constraint on commercial growth but as the feature that makes Anthropic's enterprise positioning credible. The company's refusal to allow Claude to be used for autonomous lethal weapons, even at the cost of a Pentagon contract dispute, is the clearest recent demonstration of where that line sits.
The company's Claude Mythos Preview model — its most capable model — has been withheld from public release over concerns about its cybersecurity capabilities, which were not by design. The model is currently available only to a limited set of trusted organizations under Project Glasswing. For investors, that restricted rollout represents a visible and controllable product unlock: a frontier model deliberately held back ahead of a public listing is a growth lever that can be activated at a time of the company's choosing rather than under competitive pressure.
How Does Anthropic Valuation Compare to OpenAI?
The $965 billion post-money valuation established in the Series H represents more than a doubling from the $380 billion valuation set in the Series G in February 2026. The speed of that compression — from $380 billion to nearly $1 trillion in roughly 12 weeks — is without precedent in private technology markets.
OpenAI filed its own confidential S-1 on May 22 and is targeting a debut as early as September 2026. The two companies are directly competitive: OpenAI leads on consumer reach with ChatGPT, which surpassed 900 million weekly active users by early 2026, while Anthropic leads on enterprise coding adoption and, as of May, surpassed OpenAI in business-payment share for the first time. Both companies are now racing to set the template for how a frontier AI laboratory is valued on public markets.
Wedbush Securities analyst Dan Ives described the convergence of SpaceX, Anthropic, and OpenAI IPOs as "an opening of the floodgates for the IPO market." Motley Fool analyst Geoffrey Seiler cautioned that the pattern of first-day IPO euphoria — which historically produces sharp gains followed by significant correction — argues against chasing the stock at opening. The public prospectus, when filed, will give investors the audited financials, customer concentration disclosures, and legal risk summaries needed to form a grounded view.
Frequently Asked Questions
When is the Anthropic IPO date?
Anthropic has not set a specific IPO date. The company filed a confidential draft S-1 with the SEC on June 1, 2026, and selected Morgan Stanley, Goldman Sachs, and JPMorgan Chase as lead underwriters on June 3. Reports indicate the company is targeting a listing as early as October 2026, but the final date depends on SEC review progress and market conditions at the time.
What is Anthropic's valuation?
Anthropic's post-money valuation reached $965 billion following the close of its $65 billion Series H funding round in May 2026. That figure represents more than a doubling from its $380 billion valuation set in February 2026. The company has not set a public offering price or share count, so its public market debut valuation has not yet been established.
What is Anthropic's revenue?
Anthropic disclosed that its annualized revenue run rate crossed $47 billion by late May 2026, up from approximately $9 billion at the end of 2025. Analysts have noted that the company reports cloud-reseller revenue on a gross basis — counting the full spend of enterprise customers using AWS, Google Cloud, and Microsoft Azure — which inflates the headline figure relative to competitors that report on a net basis. The public S-1 prospectus is expected to address this accounting practice directly.
Is the Anthropic IPO a buy?
Anthropic has not set IPO pricing or a share count, so no investment assessment is yet possible. Analysts have cautioned that high-profile AI IPOs at elevated private valuations frequently fall below their opening-day price within the first year as growth narratives normalize. The full S-1 prospectus, when publicly filed, will contain audited financials, risk factors, and legal disclosures that institutional investors will rely on before the roadshow begins.
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