Anthropic Could File Its IPO Publicly on Friday — and It Might Be the Biggest Listing Ever

The short answer: Anthropic, the AI company behind Claude, could make its IPO filing public as early as this Friday, October 23, according to reports citing three people familiar with the plans — clearing the way for a listing targeted for November that could rival the biggest stock market debut in history. The timing is not confirmed, and Anthropic has not commented, but the draft numbers already in circulation explain why Wall Street cannot stop talking about it: $16.3 billion of revenue in six months, an $80.7 billion reported loss, and more than $600 billion in future computing commitments.

What happened

Yahoo Finance reported on October 21 that Anthropic plans to publicly file its IPO registration documents as soon as Friday, a step that would move the process out of the confidential lane it has occupied since June. Under SEC rules, a company that files confidentially must make its materials public at least 15 calendar days before its investor roadshow begins. Reports based on the draft prospectus — first detailed by the Wall Street Journal on October 20 — say Anthropic is targeting the week of November 9 to start that roadshow, has picked Nasdaq as its listing venue, and has Morgan Stanley, Goldman Sachs and JPMorgan leading the offering. None of those details has been confirmed by the company, and the timeline could still shift with market conditions.

Why it is blowing up

Three things are colliding at once. First, scale: a November debut at the valuations being discussed would test whether any AI company can match or beat SpaceX's June listing, which raised about $75 billion and stands as the largest first-time share sale on record. Second, the growth: Anthropic's first-half revenue of $16.3 billion is roughly fifteen times the $1.1 billion it reported for the same period a year earlier, a growth rate almost unheard of at this size. Third, the argument: the same draft filing shows enormous losses and computing bills, landing in a week when investors from Hong Kong to New York are openly debating whether AI spending is running ahead of AI profits. Anthropic has become the single clearest test case for that debate.

Key facts from the draft filing

Revenue: $16.3 billion in the first half of 2026, up from $1.1 billion a year earlier, according to the draft prospectus viewed by the Wall Street Journal and reported by Reuters.
Reported loss: A net loss of $80.7 billion for the half — but about $72 billion of that is a non-cash accounting charge from revaluing convertible notes and other financing instruments, not money spent running the business.
Operating picture: Excluding those charges, the operating loss was about $8.1 billion for the half, similar to the roughly $8.1 billion operating loss for all of 2025, when revenue was $4.6 billion — meaning revenue is scaling far faster than the underlying loss.
Compute bill: Nearly $9 billion spent on computing and infrastructure in the half alone, with future commitments above $600 billion — including roughly $111 billion tied to Google, $110 billion to Amazon Web Services and $31 billion to Microsoft, plus large chip-leasing arrangements — and up to $150 billion more under negotiation.
Concentration risk: About one-fifth of first-half revenue came from just two customers, a risk the filing itself flags.
Valuation debate: Some investors are now weighing a value near $1.5 trillion, below the $1.8 trillion to $2 trillion range discussed earlier, according to Reuters reporting.

What happens next

If the Friday timing holds, the public filing will replace leaks and summaries with the actual document — audited figures, risk factors and all — and the debate will move from rumored numbers to printed ones. The reported roadshow window in the week of November 9 would then set up a listing before Thanksgiving, though every date in this story remains a reported target, not a company promise. What is certain is the stakes: this would be the first true public-market referendum on a frontier AI lab's economics, arriving just months after SpaceX's record debut and while rival OpenAI's own plans remain a step behind.

Sources

FAQ

When could Anthropic publicly file for its IPO?
As early as Friday, October 23, according to reports citing three people familiar with the plans. The timing is unconfirmed and Anthropic has not commented.

When would Anthropic actually list?
Reports target a November 2026 listing, with an investor roadshow possibly starting the week of November 9. No listing date has been officially announced.

How did Anthropic lose $80.7 billion while revenue surged?
About $72 billion of the loss is a non-cash accounting charge from revaluing convertible notes as the company's value rose. Its operating loss was about $8.1 billion for the half.

Could this be the biggest IPO ever?
Possibly. Investors are debating a valuation between roughly $1.5 trillion and $2 trillion, and the deal would be measured against SpaceX's record June debut, which raised about $75 billion.