OpenAI's Revenue Did Not Fall by $20 Billion. The Nasdaq Lost 1.4% Anyway

On October 8 the Financial Times reported that OpenAI had recently told investors its annualized revenue was approaching $50 billion at the end of September. The figure that had been circulating since late September was $70 billion. Nothing happened to OpenAI's business in between. The $20 billion was never there.

The market treated it as news anyway. The Nasdaq Composite fell about 1.4%, on pace for its worst session since July, with the decline steepening after the FT story published around midday in New York. Oracle dropped 5–6%, Intel about 6%, AMD about 4%, Nvidia about 3%. The SPDR S&P Semiconductor ETF lost 4.3% and the Philadelphia Semiconductor Index 3.8%. The trigger was a restated run rate for a company that files no accounts.

Where the $70 billion came from

A person familiar with the documents told CNN the $70 billion figure did not originate with OpenAI. It can be reconstructed from two steps, each defensible and jointly wrong.

The first was a comparability adjustment. Anthropic's reported run rate counts the gross value of sales made through its cloud partners; OpenAI reports net. Investors trying to set the two companies side by side grossed OpenAI's number up, which produced the roughly $40 billion annualized figure attributed to it in August. That was never OpenAI's own number either.

The second was compounding. OpenAI told investors revenue had grown more than 70%. Applied to the inflated $40 billion base, that arithmetic lands near $70 billion — a growth rate stated on a net basis multiplied against a grossed-up starting point. Two conventions that do not belong in the same equation.

OpenAI declined to comment to the FT.

A disclosure problem, not a demand problem

Nothing in the report is evidence about AI demand. No customer cancelled, no contract repriced, no product missed. Roughly $50 billion annualized still represents close to four times the approximately $13 billion of 2025 revenue shown in the company's leaked financials earlier this year. By any ordinary reading, the business grew.

What was marked down on Thursday was not OpenAI's revenue but the reliability of the number standing in for it. Shareholders in Oracle, Nvidia and Micron are not underwriting OpenAI's sales directly. They are underwriting a belief about those sales, and that belief turned out to rest on a calculation nobody outside a handful of investor updates could check. Discovering that your central input was assembled rather than reported is a real repricing event, and it is a separate event from the input changing.

Why this keeps happening

The two companies anchoring the largest capital expenditure cycle in the industry's history are private. Neither publishes on a schedule, to a standard, audited by anyone. What reaches the market is what investors relay from private updates, annualized by whichever convention each firm prefers. "Annualized revenue" is not an accounting term at all — it is one period multiplied out, and whether it is gross or net is a choice the person doing the multiplying makes.

That is why the sequencing of the next few months matters more than Thursday's move. Sam Altman postponed OpenAI's IPO in September to at least next year, citing AI safety. Anthropic is expected to list this autumn, reportedly seeking a valuation near $2 trillion. Its S-1 would be the first audited account of a frontier lab's economics that anyone could read — gross and net defined, cloud revenue-sharing disclosed, the comparison investors have been improvising finally specified. Until then OpenAI is reportedly seeking at least $30 billion in fresh funding at a $1.4 trillion valuation, which is 28 times the $50 billion figure where it was 20 times the $70 billion one.

What got buried

GlobalFoundries announced a $2 billion supply agreement on Thursday and Nvidia committed $1 billion to a five-year research push. Both are real, contracted, and dated. Both disappeared under the restatement of a number that no company was ever obliged to publish and that, on inspection, no company had published.

The AI trade will keep repricing on arithmetic until one of these two labs files something an auditor signed.

Sources: TechCrunch · Yahoo Finance — OpenAI's annualized revenue $20 billion lower than prior investor estimates · Yahoo Finance — OpenAI revenue $20B below previous reports, ORCL, NVDA tumble · CNN Business · Finimize