Anthropic IPO: what the public filing tells traders and what it does not
Anthropic has moved from a confidential filing to a public one. On 26 October, 2026, the company published its S-1 registration statement and applied to list on the Nasdaq Global Select Market under the symbol ANT.
The filing gives traders their first official look at the company’s finances. It does not give them a share price, a share count or a valuation.
Those gaps matter. Until the roadshow ends and the offer is priced, nobody can say what Anthropic will be worth when it starts trading. This article sets out what is known, what is not and how some brokers now let eligible clients take a view before the listing.
What the S-1 filing shows
- Listing plan – Anthropic has applied for the symbol ANT on the Nasdaq Global Select Market. Goldman Sachs and Morgan Stanley are reported as the lead underwriters.
- Revenue – The company reported more than USD 16 billion in revenue for the first half of 2026. That compares with more than USD 4 billion for the whole of 2025.
- Losses – The filing reports a net loss of about USD 80 billion for the first half of 2026. Most of it comes from a non-cash accounting charge linked to convertible notes, not from money spent running the business. Anthropic says it expects costs to keep rising.
- Spending commitments – The company has committed hundreds of billions of dollars to cloud and data centre capacity over the coming years.
- Customers – Anthropic reports more than 14,000 enterprise customers. No single customer made up more than 10% of revenue, but two customers together account for roughly one-fifth.
- Share sales after listing – Some employees and early investors can sell on the first day of trading, with further release dates in stages after that. Part of the stock is subject to an extended lock-up of up to 365 days, rather than the usual single 180-day period.
- Risk factors – The filing runs to 93 pages of risks. They include the Pentagon’s supply-chain risk designation, which Anthropic is challenging in court and says could cause material revenue losses.
How Anthropic compares with SpaceX’s record debut
The largest IPO on record belongs to SpaceX. It raised nearly USD 86 billion, including the underwriters’ extra-share option, at an initial valuation of USD 1.77 trillion. Its shares rose sharply in early trading and have moved around since.
Anthropic’s own numbers explain the attention. Revenue for the first half of 2026 grew 1,300% on the same period a year earlier, and some reports suggest its offer could be larger than SpaceX’s. Anthropic has not confirmed a size.
What is still unknown
The filing leaves the price range, share count and total valuation blank. Reports point to a listing as early as November, but Anthropic has not confirmed a date.
The last private figure is from Series H in May 2026. That round raised USD 65 billion at a USD 965 billion post-money valuation. Estimates for the listing vary widely. Reports have discussed anything from around USD 1.5 trillion to USD 2 trillion, alongside a raise of about USD 100 billion. None of these figures is confirmed.
A funding round does not set the price public investors will pay. That is set during the roadshow and offer process.
OpenAI has said it will not list this year, so Anthropic would reach the public markets first.
Do you have a view on Anthropic’s price?
Do you have a view on where Anthropic will be valued when it starts trading? Its shares are not on any exchange yet, but Anthropic pre-IPO markets let eligible clients act on that view before the listing. Brokers such as ThinkMarkets offer them now.
A pre-IPO market is a cash-settled CFD. Its quote is the broker’s estimate of a company’s market capitalisation at the close of its first day of trading, with each point worth USD 1 billion. That means a price exists even though no shares do.
A trader can open a buy position if they expect the final figure to finish above the quote, or a sell position if they expect it to finish below. Positions can be closed at any time while the market is quoted. One still open at listing settles in cash against the actual first-day closing market capitalisation.
These markets give no ownership of Anthropic shares, no shareholder rights and no IPO allocation. The quote is an estimate, not a share price, and availability depends on where the client lives. They are leveraged products, so the risks below apply.
Key risks
Pre-IPO CFDs are leveraged, which magnifies both gains and losses. In some regions, losses can exceed the initial deposit. The quote is an estimate rather than a share price, and open positions can carry holding costs. If Anthropic has not listed by the contract’s expiry in September 2028, open positions settle at their entry price and holding costs are not refunded. Read the product terms before you trade.
What traders may watch next
These are the events that could change expectations before and after listing:
- An amended S-1 that sets the price range and may add third-quarter figures.
- The start of the roadshow and the pricing date.
- The final offer price and share count.
- The first day of trading and its closing market capitalisation, which is the settlement reference for pre-IPO CFDs.
None of these events has a guaranteed outcome, and this article does not predict them.
The one figure still missing
The filing shows how Anthropic earns and spends its money. It leaves out the number the market cares about most, which is what the company is worth once public investors set the price.
That figure arrives with the roadshow and the first day of trading. Until then, the S-1, any amended filings and the reporting around them are what anyone following the listing has to work with.
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