OpenAI submitted its S-1 to the SEC on 8 June 2026. Anthropic filed seven days earlier. SpaceX is already on its roadshow. Three AI companies. Three trillion-dollar valuations. One very crowded autumn listing window.
OpenAI’s confidential IPO filing came on 8 June — and the timing tells the whole story. OpenAI submitted its Form S-1 to the Securities and Exchange Commission (SEC) on Monday. The move confirms what investment bankers and rivals already knew. The company did not wait for Anthropic to gain too much of a head start. “We expect it to leak, so we’re just announcing it,” OpenAI said in its statement. That line is the most candid IPO filing announcement in recent memory — and it captures exactly where OpenAI stands. It is racing. It knows it is racing. And it wants the world to know too.
What’s Happening & Why It Matters
OpenAI at $852 Billion: The Numbers Behind the Filing
OpenAI carries a $852 billion post-money valuation — set after its $122 billion funding round closed in March 2026. By contrast, Anthropic filed seven days earlier at $965 billion — overtaking OpenAI in private market terms. That gap is the most awkward fact in OpenAI‘s filing. Goldman Sachs and Morgan Stanley are leading the offering process. JPMorgan is also involved. Analysts at CNBC expect the public listing to target a valuation exceeding $1 trillion. That target requires OpenAI to convince investors it deserves a premium over its current private mark.
The Loss Problem That the S-1 Will Expose
The confidential filing means investors cannot yet see the full financial picture. At the same time, internal documents already in circulation complicate OpenAI‘s road to that trillion-dollar debut. The company lost approximately $1.22 for every dollar it earned in its most recent quarter. Management internally projects a $14 billion loss for 2026. Profitability is not expected until 2029 under the current plan. Meanwhile, HSBC analysts estimate OpenAI may need $207 billion in additional capital by 2030 — even under optimistic revenue projections. CEO Sam Altman must make a compelling case to public market investors. That case has to rest on trajectory, not current profitability. At the same time, it is a case that requires extraordinary forward projections at a 35x forward revenue multiple — a valuation that Bridgewater analysts described as “priced for a monopoly outcome that does not yet exist.”
Altman’s Framing: A Third Phase Begins
Altman framed the moment on X with characteristic ambition. “The economy is beginning to reshape around AI,” he wrote. He described the IPO filing as the beginning of a “third phase” for OpenAI — the first being research, the second being commercial growth, the third being public market accountability. By contrast, the company’s statement was notably cautious on timing. “We have not decided on timing yet. It may be a while because there are things we want to do that are likely easier as a private company.” That caution is real. OpenAI is preparing a tender offer for employees — letting staff sell shares at the $852 billion valuation. That move provides liquidity and reduces near-term pressure. It also signals the company prefers private flexibility while the public process unfolds.
The Race That Now Has Three Competitors
The OpenAI confidential IPO filing completes a historic trio. SpaceX filed first, as TF covered in its SpaceX IPO article, and is already on its investor roadshow. Anthropic filed on 1 June, as TF covered in its Anthropic IPO article. OpenAI filed on 8 June. All three are targeting public listings in the second half of 2026. Together, they represent approximately $3.6 trillion in enterprise value seeking public listing within months of each other. Investment banks have warned both OpenAI and Anthropic that first-mover advantage is real. The first to list sets the pricing benchmark. The second starts from a comparison — and comparisons rarely favour the second.
TF Summary: What’s Next
The SEC begins reviewing OpenAI‘s confidential S-1 immediately. A public S-1 arrives at least 15 days before any roadshow begins. Goldman Sachs and Morgan Stanley are managing the listing process. The company’s employee tender offer at the $852 billion valuation is underway. No confirmed public listing date exists.
MY FORECAST: The OpenAI confidential IPO filing will produce a public listing in Q4 2026 — but not before Anthropic and possibly SpaceX price first. OpenAI‘s financial profile — losses through 2029, extraordinary capital requirements — makes the public roadshow harder than Anthropic‘s. By contrast, the ChatGPT brand recognition with retail investors is an asset no competitor holds. OpenAI will price at or above $1 trillion. The question is whether the first quarterly earnings call after listing — exposing losses that no private investor previously scrutinised publicly — causes the kind of correction that every overpriced AI debut eventually produces.