Anthropic Filed to Go Public Today. The Ticker Is ANT, and Its Own Paperwork Shows an $80.7 Billion Loss
Three days ago we covered a fight over what Anthropic is actually worth, with guesses ranging from $144 billion to $2 trillion and no filing to settle it. That filing exists now. It doesn't name a valuation (IPOs set price the week of listing, not at the S-1 stage), but it finally puts real, if messy, numbers on the table.
The last confirmed valuation is still the one from Anthropic's $65 billion Series H round in May 2026: $965 billion post-money, per Orrick's deal announcement. Everything above that remains a target or a guess until the roadshow sets a price range.
What's confirmed, and what's still blank
| Item | Status |
|---|---|
| Form filed | S-1, October 26, 2026, publicly on EDGAR |
| Exchange and ticker | Nasdaq Global Select Market, symbol ANT |
| Underwriters | Goldman Sachs & Co. LLC, Morgan Stanley & Co. LLC |
| Shares to be offered | Not yet determined |
| Price range | Not yet determined |
| Registration status | Filed, not yet effective; no sale can occur until it is |
Why a company worth hundreds of billions reports an $80 billion loss
The headline loss figure looks like a company burning cash at an impossible rate. It isn't, mostly. Anthropic has issued a lot of convertible financing instruments, securities that convert into equity, and under GAAP accounting rules the company has to re-mark their value upward every time its own valuation climbs. As Anthropic's private valuation shot up through 2026, that re-marking alone produced a loss on paper, without a matching dollar leaving the bank, per Wolf Street's breakdown of the prospectus.
That doesn't mean the business is cheap to run. Two customers, reportedly including Amazon, accounted for close to a quarter of 2025 revenue, per Let's Data Science's review of the filing, and the prospectus reportedly discloses roughly $518 billion in future cloud and compute commitments, per Investing Live's coverage. That's the real bet investors are pricing: whether revenue keeps compounding fast enough to justify locking in that much compute years in advance.
How big a listing is this, actually
- ✦SpaceX currently holds the IPO-size record for 2026, pricing at $135 a share and raising about $75 billion in June, per 36Kr's reporting. Anthropic's own reported ambitions, if they hold, would top it.
- ✦No valuation is locked in. Anthropic's own filing doesn't state one; every trillion-dollar figure still circulating is pre-roadshow.
- ✦The loss headline will travel faster than the non-cash footnote. Expect '$80 billion loss' in a lot of headlines this week without the context that most of it isn't cash leaving Anthropic's accounts.
- ✦SEC review comes next. The agency can send comment letters before the registration is declared effective; that process, not today's filing, is what actually sets the listing date.
Did Anthropic actually file to go public?
Yes. On October 26, 2026 it filed a public Form S-1 with the SEC, confirmed on its own newsroom and visible on SEC EDGAR, proposing to list on the Nasdaq Global Select Market under the ticker ANT.
What is Anthropic's IPO valuation?
Not set. The S-1 doesn't state a valuation; that gets determined during the roadshow when shares are actually priced. The last confirmed number is $965 billion post-money from its May 2026 Series H round.
Why does Anthropic's S-1 show an $80.7 billion loss if the company is worth hundreds of billions?
Most of that first-half-2026 figure is a non-cash accounting charge: GAAP rules require re-marking convertible financing instruments to fair value as Anthropic's valuation rises, which creates a large loss on paper without a matching cash outflow.
How much revenue does Anthropic actually make?
Reported 2025 revenue was about $4.6 billion. First-half 2026 revenue was reportedly already $16.3 billion, more than all of 2025, though these figures come from outlets that reviewed the filing rather than Anthropic's own press materials.
When will Anthropic's stock actually be available to buy?
Not yet. The registration statement isn't effective, the SEC can still require changes, and no share count or price range has been set. A listing typically follows weeks to months after an S-1 like this one.
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