Anthropic Files Confidentially for an IPO: What We Know So Far

On June 1, 2026, Anthropic, an artificial intelligence company which created the Claude range of models, officially confirmed that it filed a confidential draft registration statement under Form S-1 with the United States Securities and Exchange Commission. The filing marks the first formal step toward a public listing, though no share count, price, or definitive timeline has been disclosed. What makes this noteworthy is the scale at which Anthropic is arriving at the public markets, and the unusual structure through which it is doing so.

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Why Anthropic Filed Confidentially?

The filing came just days after Anthropic closed a $65 billion Series H funding round at a $965 billion post-money valuation, surpassing OpenAI's $852 billion mark. Filing within days of closing that round signals fairly clearly that this was intended to be the company's last major private fundraise. Anthropic is targeting a possible public listing as early as October 2026 and has reportedly engaged law firm Wilson Sonsini, which managed Google's 2004 IPO, to assist with public-market readiness.

The advantage of the confidential S-1 filing is that the firm will be able to submit its financial statements to the SEC for scrutiny before they are available publicly, thus being able to fine-tune their disclosures.

Revenue Growth Has Accelerated Rapidly

In January 2025, the company's annualised revenue run rate stood at $1 billion. By May 2026, sixteen months later, that figure had crossed $47 billion, with the difference reflecting the pace of new enterprise API agreements signed in the final weeks of May alone.

The company expects to report $10.9 billion in revenue for the second quarter of 2026, more than doubling the $4.8 billion it generated in Q1 and exceeding its entire 2025 annual revenue in a single quarter.

Anthropic has told investors it expects to report its first profitable quarter in June 2026, as revenue growth starts to outpace its heavy compute costs. This could translate into around ₹4,650 crore (approximately $559 million) in operating profit for Q2. That puts the operating margin at roughly 5%, which is thin relative to the valuation being sought but reflects a business that is still in the process of scaling its cost base.

The primary reason for such growth is Claude Code, which earned more than $1 billion in just six months after launch due to enterprise developers. More than 1,000 clients spend over $1 million annually on Claude, while the number doubled within less than two months, from April 2026.

What Valuation Is Anthropic Targeting?

It intends to have a valuation of $1.75 trillion to $1.8 trillion and to raise a maximum amount of $75 billion, thus making it possibly the biggest IPO ever recorded. A market value that high would place Anthropic among the world's top 15 companies by market capitalisation on its first day of trading.

Who Is Backing It?

The Series H round was co-led by Capital Group, Coatue, D1 Capital Partners, GIC, ICONIQ, and XN. Significant investors include Baillie Gifford, Blackstone, Brookfield, DST Global, Fidelity, General Catalyst, Lightspeed Venture Partners, Temasek, and T. Rowe Price. The round also includes $15 billion of previously committed investments from hyperscalers, including $5 billion from Amazon.

Amazon invested $25 billion and Anthropic has agreed to spend $100 billion on AWS infrastructure. Claude Code is running at $2.5 billion in annualised revenue and eight of the Fortune 10 are Claude customers.

How Does Anthropic's Governance Structure Differ?

One of the aspects about Anthropic that may be appealing to the public market investors is the nature of the business corporation itself. As opposed to the typical business entity that is aimed at maximizing the profits of shareholders, Anthropic is structured as a Public Benefit Corporation (PBC). The organization also has a Long-Term Benefit Trust (LTBT) that will help ensure the safety of the organization despite the growth in size.

PBC corporate form is exceptional for a publicly held company, and it is important that any disclosures be made about how the shareholder fiduciary responsibility intersects with the declared safety goal of Anthropic. Furthermore, the issue of the hyperscalers being involved through Amazon and Google creates a complex situation from the point of view of conflict of interests.

Conclusion

Since the S-1 is confidential, the full financial statements, risk factors, and details of the share structure have not been made public yet. The anthropic approach to gross vs. net revenue accounting inflates numbers compared to its net-revenue reporting competitors, and this is an issue that Anthropic’s S-1 filing will have to address. Compute costs are another significant factor. Running frontier AI models at scale is expensive, and how quickly the company can expand margins as it grows will be central to how public investors price the stock.

An operating profit of $559 million for Anthropic in the second quarter would translate to about a 5% margin, which is a small margin for a firm that is trying to become valued at nearly a trillion dollars in the public markets. It is not cheap to run advanced AI models.

For now, the confidential filing is the opening move. The full picture will only emerge once the public S-1 is released, which is when investors will get the complete set of financials, risk disclosures, and the final offer structure to work with.