The $1 Trillion Question: OpenAI Files for the Most Anticipated IPO in History

EBM NEWSDESK ANALYSIS-Nick Staunton, Editor-in-Chief

OpenAI is heading for Wall Street at a valuation that would make it the largest tech listing ever. There is just one problem — it loses $1.22 for every dollar it earns.

The Filing That Changes Everything

The most anticipated IPO in the history of technology is now formally underway. OpenAI confidentially filed its S-1 prospectus with the US Securities and Exchange Commission on 22 May 2026, targeting a public listing as early as September and a valuation that could exceed $1 trillion — a number that would make it the largest stock market debut ever recorded. Goldman Sachs, Morgan Stanley and JPMorgan are leading the deal.

The filing arrived two days after a jury dismissed Elon Musk’s lawsuit against the company, clearing the most significant legal obstacle to going public. The timing was not accidental. OpenAI’s bankers had been waiting for that ruling. With it resolved, the path to Wall Street is now clear — at least legally.

The confidential filing format means the full financial details stay private until approximately 15 days before the investor roadshow. What is already known from fundraising disclosures is striking enough. OpenAI’s last private round closed on 31 March 2026 — a $122 billion raise, the largest private technology financing ever completed, backed by Amazon, Nvidia and SoftBank at an $852 billion post-money valuation. Analysts covering the deal expect the public listing to push that figure past $1 trillion.

The Economics Nobody Is Leading With

The revenue numbers are extraordinary. OpenAI is generating approximately $2 billion per month, hitting an annualised $25 billion run rate by March 2026, up from $20 billion at the end of 2025. Sam Altman has publicly targeted $100 billion in annual revenue by 2027 — a figure that, if achieved, would represent one of the fastest revenue ramp-ups in corporate history.

The number that deserves equal attention is the one buried beneath the headline: OpenAI lost $1.22 for every $1 of revenue in Q1 2026. The company is growing at extraordinary speed and burning capital at an extraordinary rate simultaneously. Compute costs — the raw infrastructure bill for running models at the scale ChatGPT demands — are the primary driver of that loss ratio, and they do not compress quickly or easily.

This is the central tension that Goldman and Morgan Stanley will spend the roadshow attempting to resolve for institutional investors. The bull case is that compute costs follow a learning curve — they fall as infrastructure scales, as model efficiency improves and as custom silicon displaces general-purpose GPU clusters. The bear case is that the frontier model race is a capital destruction exercise with no obvious floor, and that OpenAI’s competitive moat is narrower than a $1 trillion valuation implies.

As we explored in our analysis of how Anthropic’s Series H raise is reshaping the AI investment landscape, the valuation logic in frontier AI has increasingly decoupled from conventional revenue multiples. Investors are not buying current earnings. They are buying the right to own the infrastructure of the next computing era — or so the pitch goes.

The IPO Week That Will Define 2026

OpenAI does not arrive at the SEC in isolation. This week, SpaceX is set to debut on the Nasdaq in a deal targeting $86 billion in proceeds and a valuation of $1.78 trillion — figures that would make it the most valuable company ever to list on a public exchange. Anthropic, the Claude maker valued at approximately $900 billion following its own recent fundraising, filed its IPO paperwork last week and is targeting an October debut.

Three AI-adjacent companies, each valued at close to or above $1 trillion, attempting to access public markets within months of each other. The capital absorption question is not trivial. As we noted in our markets coverage of how AI-related IPOs are competing for oxygen in an already thin market, the concern among portfolio managers is whether institutional appetite can absorb this volume of supply without meaningful price discovery pressure on all three deals simultaneously.

The NASDAQ’s 4.2% single-session decline last Friday — its largest drop since April 2024 — and the subsequent volatility across semiconductor stocks adds a timing complication that OpenAI’s bankers did not factor into their original roadshow calendar. A market reassessing AI valuations in real time is not the environment in which you want to price a $1 trillion listing.

The Governance Question

The structural transformation that made this IPO legally possible deserves scrutiny. In October 2025, OpenAI restructured from a capped-profit LLC into a Public Benefit Corporation, removing the 100x investor return cap that had previously limited its attractiveness to conventional equity investors. The nonprofit entity that originally controlled OpenAI retains a stake — but its oversight role has been substantially diminished.

Public Citizen, a consumer advocacy group, has argued that subordinating the nonprofit to the for-profit entity is legally impermissible. No active legal challenge currently remains. But SEC reviewers and institutional investors with ESG mandates will examine the governance structure carefully — particularly the fact that as of April 2026, all but one Foundation board member also served on the Public Benefit Corporation board, raising questions about the independence of nonprofit oversight.

For European institutional investors, this governance complexity sits alongside a regulatory environment that has consistently taken a more cautious view of AI concentration and corporate structure than Washington. As we examined in our coverage of Europe’s tech sovereignty push and what it means for American AI dominance, the question of who controls frontier AI infrastructure is not purely financial — it is geopolitical, and European capital allocators are increasingly required to take a view on it.

The Verdict

OpenAI’s IPO filing is simultaneously the most exciting and most sobering corporate event of 2026. A company generating $25 billion in annualised revenue, backed by the most powerful technology investors on earth, carrying the most recognisable AI brand in consumer history — heading to market at a valuation that prices in a future that has not yet arrived and may not arrive on the timeline the bulls are pricing.

The loss ratio is the number that will define the roadshow. Altman’s $100 billion revenue target for 2027 is the number that will define the valuation. And the state of AI equity markets between now and September — currently experiencing their most significant correction since the rally began — will define whether the timing holds.

What is not in doubt is the historical significance. When OpenAI prices its IPO, it will be the defining capital markets moment of the AI era. Whether it is remembered as the moment the AI revolution went mainstream or the moment the bubble peaked will depend entirely on what the audited financials show when the public S-1 finally lands.

As we noted in our analysis of how the Anthropic Series H raise set the template for AI mega-valuations, the race to define AI’s public market moment has been building for two years. The starting gun has now been fired.

“OpenAI generates $2 billion a month in revenue. It loses $1.22 for every dollar it earns. Goldman Sachs and Morgan Stanley have until September to make that arithmetic look like a buying opportunity.”

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