Anthropic Made an 8 Percent Operating Profit in the Second Quarter, Its S-1 Shows. After June It Signed About $245 Billion More in Compute Deals.

On Monday, October 26, 2026, Anthropic made its S-1 registration statement public, 147 days after it confidentially submitted a draft on June 1. It has applied to list Class A shares on the Nasdaq Global Select Market under the symbol ANT. The share count and price range are still blank. Twenty-two banks sit on the cover, with Goldman Sachs and Morgan Stanley listed first.

The headline most outlets ran is the $80.7 billion net loss for the first half. It is real, and it is mostly paper. The more useful number is three lines higher: in the three months ended June 30, Anthropic booked $974 million of operating income on $11.6 billion of revenue. That is an 8 percent operating margin, and it is the only profitable quarter of the six the filing breaks out.

The same filing shows why one good quarter does not settle the question. After June 30, Anthropic says it entered new and amended compute and infrastructure agreements with about $245 billion of future minimum payments. Revenue is growing fast. The obligations it has to be paid from are growing in much larger steps.

Six Quarters, One Profit

The quarterly table is the most informative page in the document. Revenue went from $376 million in the first quarter of 2025 to $11.6 billion in the second quarter of 2026. The jump from the first quarter of 2026 alone was about 2.4 times.

Source: Anthropic S-1, quarterly results of operations. Compute share is TensorFeed's math (compute and infrastructure expense divided by revenue). The third-quarter 2025 loss includes the $1.5 billion Bartz copyright settlement.

The compute column is the story. For all of 2025, Anthropic spent $7.3 billion on compute and infrastructure against $4.6 billion of revenue, about $1.60 for every dollar it brought in. In the second quarter of 2026 it spent about 48 cents. On the company's adjusted measure, which excludes stock-based compensation and non-cash charitable contributions, first-half operating income was $1.6 billion, about a 10 percent margin, and the second quarter alone was $2.2 billion, about 19 percent.

For the half year, revenue was $16.3 billion, 14 times the $1.2 billion of the first half of 2025. Operating cash flow turned positive at $3.9 billion, against $1.5 billion of cash burned a year earlier. Cash, cash equivalents and short-term investments stood at $131.7 billion on June 30, after $110.8 billion of net cash from financing in six months.

Where the $80.7 Billion Loss Came From

Of the $80.7 billion first-half net loss, $72.4 billion is a change in the fair value of convertible notes, derivative liabilities and SAFEs. The S-1 says that was driven by the rising value of its convertible notes as Anthropic's valuation went up. Another $8.4 billion of other expense in the second quarter came mostly from fair value accounting on note purchase agreements. Neither is cash leaving the building, and Yahoo Finance and Fortune both describe most of the loss as accounting charges.

That does not make it irrelevant. A loss that grows when the company gets more valuable is a loss that converts into shares, and shares are what IPO buyers are paying for. The pro forma loss per share that strips the note charges out is still blank.

The Commitments Keep Moving

The S-1 discloses compute obligations in pieces, at different dates and under different definitions. Here is each figure as the filing states it.

These do not add up cleanly. The June 30 figure covers purchase commitments, mainly cloud hosting and infrastructure services, while the two windows of new agreements also include leases. What is clear is the direction. On the filing's own figures, the purchase line went from $54.6 billion to about $265.6 billion in six months, roughly 4.9 times, and the agreements entered after June add about $245 billion more. Added together, the two windows of new deals come to about $662 billion of minimum obligations by our sum, a rough figure since amended contracts may overlap and the month of June is not covered. That is before the $125 billion to $150 billion estimate and before agreements the S-1 says carry no fixed dollar amount at all.

The S-1 also includes a July hardware agreement with AMD for Helios rack systems built on MI450 GPUs, under which AMD committed to buy up to $5.0 billion of Anthropic's Class N stock if certain conditions are met. In September, Anthropic raised its revolving credit line from $3.3 billion to $15.0 billion.

Where the summary should state the total committed spend as of September 30, the S-1 prints a blank dollar sign. Same for third-quarter revenue, and for run-rate revenue as of October 31, a date that has not arrived yet.

What the Risk Factors Add

• Half the revenue runs through rivals. Sales through cloud provider marketplaces were 47 percent of 2025 revenue and 48 percent of first-half 2026 revenue. Anthropic says it is the principal in those sales and books them gross, and fees to channel partners sit in its sales, marketing and partnerships line. That line came to 19 percent of first-half revenue, and the S-1 says its $3.0 billion increase was mostly a $2.7 billion rise in channel partner fees.
• Some revenue comes from customers breaking its rules. Anthropic estimates 5 to 7 percent of revenue for the nine months ended September 30 came from customers it later determined were violating its usage policy or commercial terms. "We believe this dynamic is common in our industry," the filing says.
• Concentration is falling, not gone. No customer topped 10 percent of nine-month revenue, but the top five were about 25 percent. About 79 percent of third-quarter revenue came from outside the top five, up from about 64 percent in the first quarter.
• New models carry the revenue. Model versions released in the six months to September 30 made up over 80 percent of third-quarter revenue.

The customer base itself grew fast. Customers paying $100,000 or more over a trailing year went from more than 950 on September 30, 2025 to more than 11,900 a year later. Anthropic puts net revenue retention at approximately 900 percent and says Claude "has experienced the fastest enterprise adoption of any technology in history," a claim it makes about itself.

The Third Quarter Already Has Charges in It

The subsequent events note flags costs that will land after the profitable quarter. Anthropic recognized $2.0 billion of expense in the third quarter for its obligation to match employee donations made in August. After June 30 its board approved about 91 million restricted stock units with a grant date fair value of $5.8 billion, vesting tied partly to the registration statement taking effect. The company also warns that it expects margins to fluctuate, "particularly in periods when substantial incremental compute is delivered to us and we incur the associated expenses."

With about $245 billion of new agreements commencing between 2026 and 2036, a lot of incremental compute is on its way.

Our Take

The second quarter is a real result. Compute falling from about $1.60 per revenue dollar in 2025 to 48 cents in one quarter is the clearest evidence yet that frontier model serving can carry a positive margin at scale. It also confirms the point we made in August: Anthropic counts cloud marketplace sales gross, so its top line and OpenAI's are not counted the same way. The partner cut shows up in the 19 percent partnerships line.

But one profitable quarter, measured before the biggest compute deliveries arrive, is a snapshot of the gap between when revenue shows up and when capacity gets billed. Revenue is mostly consumption based. The obligations run up to 20 years. The S-1 says so plainly in its risk factors, and the blanks in the summary are exactly the numbers that would tell investors how wide that gap is today.

Our view: a buyer should treat Q2 as the ceiling of what this model looks like before the next wave of capacity hits the income statement, not the floor. The amended S-1 with third-quarter numbers is the document that matters. If compute stays under 60 percent of revenue while the $245 billion starts billing, the bull case is earned. If it jumps back toward 100 percent, the Q2 profit was timing.

Sources: Anthropic Form S-1 (SEC EDGAR, October 26), Fortune, Yahoo Finance.