Anthropic S-1 Shows $131.7 Billion in Cash, a Quarterly Operating Profit and a Blank Where Q3 Revenue Should Be

Since Anthropic posted its public S-1 at 9:00 a.m. ET today, Oct. 26, the 330-plus page document has turned up details that go beyond the headline loss and the compute commitments we already reported. The cash position is large, the business is generating operating cash, and the third quarter is missing from the numbers.

The balance sheet and the cash flow

The filing says Anthropic had raised $141.1 billion in total capital as of June 30. It held $112.4 billion in cash and cash equivalents and $19.3 billion in short-term investments. The balance sheet also carries $108.6 billion in convertible notes payable.

Anthropic generated $3.4 billion in free cash flow in the first half of 2026, according to the filing's figures. That is $3.9 billion in operating cash flow less $482 million in capital expenditures.

SemiAnalysis read the balance sheet as roughly $9.7 billion burned to date. It called the company "likely the most efficient scaling of a business in the history of capitalism" and said Anthropic was profitable on an operating basis in the June quarter. Altimeter's Jamin Ball made the same point: less than $10 billion of total burn to reach $16.8 billion in quarterly revenue.

For the full six months, operating expenses were $16.98 billion, including $8.95 billion on compute and infrastructure. The operating loss narrowed to $693 million from $2.14 billion a year earlier. ZeroHedge, which went through the quarterly tables, puts the second-quarter operating profit at $974 million and calls it the first quarterly GAAP operating profit in the filing.

Compute and infrastructure spending fell from 251% of revenue in the first quarter of 2025 to 48% in the second quarter of 2026. Revenue was $11.6 billion in that second quarter.

The missing third quarter

The prospectus summary says revenue grew from $0 at launch in early 2023 to a figure for the three months ended Sept. 30, 2026. The figure itself is blank. The financial statements stop at June 30.

Management told investors in mid-October that third-quarter revenue was $16.8 billion, up about 45% from the second quarter. That number is not in the S-1. The company also warns that it expects its revenue growth rate to fluctuate and "decline over time."

Customer concentration and model churn

Anthropic's five biggest customers drove about 25% of revenue in the first nine months of the year. Their spending hit a record in the quarter ending Sept. 30. The company reports net revenue retention of nearly 900%. Anthropic itself flags the concentration as a double-edged sword, because those customers could switch AI providers.

Model versions released in the six months ended Sept. 30 accounted for more than 80% of third-quarter revenue, the filing says. ZeroHedge reads that as a treadmill: most of the money comes from products that did not exist two quarters ago, so the company has to keep shipping frontier models to hold its position.

The filing also notes seasonality. Total customer spend fell about 20% in the two weeks to Jan. 2, 2026, compared with the prior period.

Revenue per employee reached more than $6.6 million on a trailing 12-month basis across roughly 5,300 staff as of Sept. 30, up from $1.4 million a year earlier.

Commitments, risk language and the lock-up

The filing itemizes minimum cloud commitments of $265.6 billion owed regardless of usage. That includes at least $114.5 billion with Google through July 2033, $110 billion with Amazon through April 2036 and $44.9 billion with Microsoft through May 2033. There are also $161.2 billion in five-year Broadcom TPU leases and $245 billion under new and amended deals signed after June 30. ZeroHedge's own tally puts the total compute bill at roughly $780 billion to $810 billion.

Risk factors take up 94 of the filing's 335 pages. Anthropic warns that advanced AI models could pose "catastrophic or existential risks to humanity." It says they have shown self-preserving behavior, including "attempts to resist shutdown, conceal or manipulate information" and "behavior resembling blackmail." Damages from a catastrophic incident, it says, could be too large to insure.

Under the lock-up terms, non-founder insiders can sell up to 10% of their shares on the first day of trading and another 35% after full-year 2026 results. The seven co-founders are locked up for 365 days or until third-quarter 2027 results. They can sell up to 29% after 180 days or after first-quarter 2027 results.

Each co-founder has pledged 80% of their equity to philanthropy. The filing allocates 846.8 million shares, roughly 5% of the fully diluted total, to the Anthropic Public Benefit Fund.

Bull case, bear case

The sharpest framing of the risk came before the filing. Analysts at LightShed wrote in a research note: "Anthropic could become the most valuable company in the world. It could also end up in bankruptcy."

ZeroHedge argues the 45% quarter-over-quarter growth masks a sharp slowdown in monthly growth and says IPO investors marked their valuation down to $1.5 trillion from $2 trillion. It also says public shareholders will never hold more than 49.9% of the vote. SemiAnalysis and Ball look at the same cash numbers and see unusual capital efficiency.

One market signal has already appeared. Anthropic's pre-IPO perpetual contracts on Binance fell nearly 7% from a peak of $1,972 to $1,837, then settled near $1,870 in the hour after the filing, according to HuggingNews. These are thinly regulated derivative contracts, not shares.

What comes next

The share count and price range are still blank. Goldman Sachs and Morgan Stanley lead a syndicate of at least 22 banks. Fox Business's Liz Claman reported that pricing on Nov. 19 or 20 remains on track. The Financial Times says investors expect a valuation of $1.5 trillion to $1.75 trillion, up from the $965 billion valuation in May. Until the range is filed, it is unclear what investors will pay for a company whose latest quarter is not in its own financial statements.