OpenAI's Revenue Came In $20B Below Reports, and Oracle Fell 5.6%

The Nasdaq had already opened lower on Thursday when the Financial Times story landed around midday. The selling sped up after the report, and the index closed down 1.25%.

According to the report, OpenAI told investors its annualized revenue was approaching $50B at the end of September. The figure that had been derived from investor materials a month earlier, and widely reported, was about $70B (some accounts put it at $68B).

OpenAI declined to comment. A person familiar with the matter said the gap reflected how revenue was calculated, not lost sales.

One Company, Two Revenue Figures

The gap comes down to gross versus net. Rival Anthropic books the full value of sales made through cloud partners as revenue. OpenAI books only its own share.

To compare the two companies, investors grossed up OpenAI's figure with its partners' sales. A number put at $40B in August became roughly $70B after OpenAI reported growth of more than 70%.

We covered the Anthropic side of this accounting split in our story on Anthropic's gross and net revenue. This time the split worked the other way, against the company that uses the narrower measure.

Who the Selloff Hit

The selling was concentrated in companies that sell capacity and chips to OpenAI. The Philadelphia Semiconductor Index fell as much as 4% intraday, and Intel and Arm each dropped more than 6% during the session.

Oracle led the list because it reportedly signed a five-year, $300B cloud contract with OpenAI in September 2025. For the company's latest quarter, see our Oracle earnings analysis.

Other pressures were in play the same day. Crude rose 3.6%, and the 30-year yield touched a 24-year high intraday. Still, the sources clearly note that the decline accelerated at the time of the report.

The Math on Who Pays the Bills

The market did not read this as an accounting footnote. It read it as a story about ability to pay.

The logic is simple. When a partner such as Microsoft sells an OpenAI model on its own cloud, the part of the bill the partner keeps never reaches OpenAI. Net revenue is what pays Oracle, Nvidia or Broadcom.

The cash coming in was the same yesterday as today. What changed is the denominator investors use to size the commitments. A denominator 29% smaller makes the same commitment 40% heavier relative to revenue.

TSMC Posted a Record Quarter the Same Day

Supply-side data pointed the other way. TSMC reported September revenue of about $16.1B, up 54.6% from a year earlier and the second-best month in its history.

At roughly 31.9 Taiwan dollars per US dollar, third-quarter revenue reached $46.8B. That beat the top of the $44.6B to $45.8B guidance the company gave in July.

TSMC still fell 1.35% in Taipei, and its US shares were down as much as 3.3% intraday. The market was not questioning whether the chips get made. It was questioning whether they get paid for.

The chart puts the two-day pullback since the Nasdaq 100's record the previous day in context.

What It Means for Investors

• The market repriced the revenue base behind OpenAI's commitments, not its growth rate; strong TSMC data did not change that.
• Oracle, CoreWeave, AMD and Broadcom, tied to OpenAI by contract, will stay more sensitive to such news than Nvidia or Microsoft.
• TSMC's October 15 report, including its AI revenue share and 2027 capex outlook, will show whether demand holds on the supply side.
• The risk to the thesis: if OpenAI's new round closes well below the expected valuation, the financing of its commitments comes into question.

For why this distinction matters in valuation, see our guide How Is Valuation Done?

This story draws on reporting of the Financial Times' October 8 article by Dow Jones (MarketScreener), CNN and Benzinga, on TSMC's official monthly revenue release of October 8, and on closing market data. The FT original is paywalled; the $50B and $70B figures match across several independent accounts. The Oracle contract value has not been officially disclosed and rests on press reports. Stock moves are closing figures; the declines given for Intel and Arm are intraday.