Anthropic S-1

Anthropic’s Amended S-1 Discloses $17 Billion Quarter and $104 Billion Loss

The filing also shows an operating loss of $567 million for the third quarter and about $895 billion in computing commitments, while the IPO price and date remain blank.

By Elliot Marsh, Startups and markets correspondent2 min read
Anthropic San Francisco office scene from an official October 2024 visit
Anthropic's San Francisco office as seen during a Secretary of State visit in October 2024. Photograph: Department for Science, Innovation and Technology/Wikimedia Commons (CC BY 2.0)

Anthropic’s amended Form S-1, filed with the U.S. Securities and Exchange Commission on Monday, showed $17.0 billion in revenue for the quarter ended September 30, 2026, up from $11.6 billion in the second quarter, and a $104.0 billion nine-month net loss through September. The nine-month loss was mostly a non-cash charge tied to the rising value of the company’s convertible notes, the filing says.

Anthropic reported a net loss of $23.3 billion for the third quarter, compared with $12.1 billion a year earlier. The company swung to an operating loss of $567 million from a $974 million operating profit in the previous quarter. The company said demand exceeded its long-term capacity, so it spent $5.0 billion on short-term computing during the quarter, and it recorded $2.0 billion in non-cash charges for matching employee share donations.

Within the nine-month net loss, Anthropic recorded a $94.3 billion loss from marking convertible notes, derivative liabilities and SAFEs to market, plus $10.4 billion of other expense mainly from forward share purchase agreements with partners such as Google and Amazon. The company’s operating loss for the nine months was $1.3 billion. Amazon holds $6.2 billion of convertible notes with conversion prices around $2.09 and $5.05 per share; those notes were valued at $130.5 billion on September 30.

The filing also disclosed about $895.4 billion in signed purchase and lease commitments, substantially all for computing and infrastructure. About $447.5 billion of the total falls due before the end of 2030, with roughly $69.8 billion due in the 12 months following September 30. The largest named contracts, each exceeding $100 billion, are with Broadcom, Google, SpaceXAI and Amazon. The company’s cash and short-term investments totaled $131.8 billion as of September 30.

The amended S-1 still leaves the IPO price range and share count blank, and it does not set an offering date. The company has sought a listing on Nasdaq’s Global Select Market under the ticker ANT. Anthropic anticipates that a portion of the shares will be offered to individual investors at the IPO price through retail brokers such as Fidelity, Charles Schwab, Robinhood, SoFi, E*TRADE from Morgan Stanley and Trade-PMR, subject to each broker’s rules. Following the IPO, a trust will elect most board members, and immediately before the offering closes, the seven co-founders’ company will receive one share that carries 50.1 percent voting power on shareholder matters.

Anthropic hopes to match or exceed the $86.2 billion SpaceX raised when it went public, Bloomberg News reported, citing people familiar with the matter. TradingView reported that investors have signaled to bankers a valuation of roughly $1.4 trillion to $1.5 trillion, with $1.75 trillion viewed as possible. The filing itself does not confirm a valuation, share count or price.

Fees from businesses for Claude use rose by $24.2 billion from the same nine months of 2025, and more than 11,900 customers each contributed at least $100,000 over the 12 months ended September 30. Revenue increased 1,127 percent from the year-earlier quarter, while computing and infrastructure costs rose 382 percent, the filing says.

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Elliot Marsh covers startups, IPO filings and the money behind them for Venturist. Elliot writes from SEC filings, company announcements and published reporting.

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