As of October 29, 2026, Anthropic has filed its public S-1 to list on Nasdaq under the ticker ANT, but no IPO date or price range has been announced. The roadshow cannot start before November 10, andAs of October 29, 2026, Anthropic has filed its public S-1 to list on Nasdaq under the ticker ANT, but no IPO date or price range has been announced. The roadshow cannot start before November 10, and

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Anthropic IPO Date, Plans and Status: What's Confirmed and What Isn't

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Oct 29, 2026

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Key Takeaways

Anthropic filed its public Form S-1 with the SEC on October 26, 2026, five months after the confidential draft of June 1.
Confirmed by the filing: Class A common stock, the Nasdaq Global Select Market, the ticker ANT, and 22 underwriters led by Goldman Sachs and Morgan Stanley.
Not confirmed: the share count and the price range, which wait for an amended S-1, and the roadshow dates and the listing day, which come with the final prospectus and the exchange's listing notice.
Under the SEC's 15-day rule the roadshow cannot begin before November 10, 2026, so a listing before mid-November is not possible.
Polymarket priced a listing by November 30 at 88% on October 29, 2026, which measures what traders expect rather than anything the company has set.
The last valuation Anthropic has confirmed is $965 billion post-money from the May 2026 Series H; reported IPO valuation discussions run from $1.5 trillion to $2 trillion.

Anthropic IPO at a Glance

The Anthropic IPO is a filed, undated Nasdaq listing: the paperwork is public, the exchange and ticker are set, and the price and date are not.

Company: Anthropic, PBC, a Delaware public benefit corporation and the developer of the Claude models.
Ticker: ANT, per the application disclosed in the S-1.
Exchange: Nasdaq Global Select Market.
Underwriters: 22 banks, with Goldman Sachs and Morgan Stanley listed first on the cover.
Filing status: public Form S-1 filed October 26, 2026; no amendment (S-1/A) had been filed as of October 29, 2026.
Reported valuation range: $1.5 trillion to $2 trillion under discussion, according to Yahoo Finance, against a confirmed $965 billion private valuation from May 2026.
Current status: waiting for the amended S-1 that adds the share count and price range, then a roadshow that can start no earlier than November 10, 2026.

The confirmed terms of the Anthropic IPO as of October 29, 2026, from the public Form S-1.

Has Anthropic Announced an IPO Date?

No, Anthropic has not announced an IPO date as of October 29, 2026.

The public S-1 filed on October 26 states that the number of shares and the price range have not yet been determined, and it names no listing day.

Anthropic's own filing announcement confirms the Nasdaq application and the ANT symbol but gives no timeline.

What does exist is a procedural floor.

A company that used the SEC's confidential review process must file publicly at least 15 days before its roadshow begins, under the Division of Corporation Finance's expanded draft registration procedures of March 3, 2025.

Counting 15 days from October 26 puts the earliest roadshow start at November 10, 2026.

Pricing follows the roadshow, and the first trade follows pricing by one day, so the earliest realistic listing sits in the second half of November.

This is normal for a first public S-1, which rarely carries a price range; an amended filing adds it shortly before the roadshow, and the final price is set the evening before trading.

Anthropic IPO Timeline: Confirmed, Reported and Expected

The Anthropic IPO timeline has two confirmed dates, one reported estimate and several expected steps, and each entry below carries its label.

June 1, 2026 — Confirmed: Anthropic announced that it had confidentially submitted a draft S-1 to the SEC.
October 26, 2026 — Confirmed: the public Form S-1 was filed, naming the Nasdaq Global Select Market, the ticker ANT and 22 underwriters.
Amended S-1 — Expected: a Form S-1/A will add the share count, the price range and the implied valuation; none had been filed as of October 29.
Roadshow, no earlier than November 10, 2026 — Expected: the 15-day rule sets this floor; the company has not announced a start date.
Roadshow start the week of November 9 — Reported: the Motley Fool reported on October 29 that marketing could begin that week, with a listing in mid-to-late November.
Pricing — Expected: the underwriters set the final price the evening before the first trade, after the roadshow.
First trade — Expected: ANT opens on Nasdaq the morning after pricing, once the SEC declares the registration effective.
Post-listing lock-up releases — Confirmed structure: the S-1 sets a staggered release schedule after the listing, with the largest holders fully free to sell only by the third-quarter 2027 results or day 365, whichever comes first.

The Anthropic IPO timeline with each step labeled confirmed, reported or expected.

What the Market Expects

The market expects Anthropic to list in late November 2026, but that is a market expectation, not a confirmed date.

On Polymarket's "Anthropic IPO by…" market, the October 29, 2026 snapshot priced a listing by November 20 at 61%, by November 25 at 79%, by November 30 at 88% and by December 31 at 95%.

The same market priced a listing by October 31 at under 1%, which matches the arithmetic of the 15-day rule.

The public S-1 repriced these contracts: before October 26 traders were still guessing when the filing would land, and after it they were pricing a known roadshow floor.

The full ladder, the first-day market-cap contracts and the Kalshi equivalents are tracked in the Polymarket Anthropic IPO odds guide.

Polymarket's implied probability of an Anthropic listing by each date, October 29, 2026 snapshot; a market expectation, not a confirmed date.

Anthropic IPO Status: Confirmed, Reported, or Just Noise

The exchange, the ticker, the lead banks and the filing itself are confirmed by the S-1; the valuation is confirmed only as of May 2026; the listing month, the deal size and the share price are confirmed by no one.

Anthropic has filed to go public — Confirmed: Form S-1 on EDGAR, filed October 26, 2026.
The exchange is Nasdaq — Confirmed: the S-1 discloses an application to list on the Nasdaq Global Select Market.
The ticker is ANT — Confirmed: S-1 cover page.
Goldman Sachs and Morgan Stanley lead the deal — Confirmed: the cover lists 22 underwriters with those two banks first.
Anthropic is worth $965 billion — Confirmed as of May 2026: the Series H announcement of May 28, 2026; the IPO valuation is a separate, unset number.
The IPO valuation will be $1.5 trillion to $2 trillion — Reported: discussion range in press reports, not a company statement.
Retail investors will get 15% to 20% of the shares — Reported: Business Insider reported on October 28, citing Bloomberg, that Anthropic could earmark that share for retail investors, with JPMorgan leading the retail allocation, as carried by Yahoo Finance UK.
The IPO will be in November 2026 — Not confirmed: only the 15-day floor is a fact; the rest is market expectation.
The deal will raise $X billion — Not confirmed: the share count is blank, and the $1 billion in the fee table is a placeholder for the registration fee.
Shares will price at $X — Not confirmed: the price range is blank until an amended S-1.

Which Anthropic IPO claims are confirmed, reported or not confirmed, and the basis for each.

What Anthropic Has Actually Said

Anthropic has made two statements about the offering, and neither names a date.

On June 1, 2026 it announced the confidential draft submission and said the offering would depend on market conditions and other factors.

On October 26, 2026 it announced the public filing, the exchange and the ticker.

Every figure tied to the offering comes from the S-1, which is marked "subject to completion," so the financial history is fixed while the offering terms are not.

What Is Only Market Expectation

Reported timelines, anchor investors and IPO valuations are not company statements, and the filing does not confirm them.

Prediction-market prices and pre-IPO product quotes measure what traders expect, which is useful information but not a disclosure.

One expectation has already become fact: reports named Nasdaq as the venue in September, and the S-1 confirmed it in October.

What the Public S-1 Changed

The public S-1 replaced five months of estimates with filed numbers and disclosed terms.

The filing reports revenue of $16.29 billion for the six months ended June 30, 2026, against $1.16 billion a year earlier.

It reports a net loss of $80.7 billion for the half, of which roughly $72.4 billion is a non-cash change in the fair value of convertible notes rather than cash spent.

It also reports $131.7 billion of cash and short-term investments at June 30, 2026, and a share structure in which public Class A holders get one vote each while a founders' share controls 50.1% of the vote.

The full numbers are in the Anthropic revenue and profitability guide.

The ownership and control details, and how the private mark relates to the reported IPO range, are in the guide to Anthropic's IPO valuation.

Checking EDGAR and the Company Newsroom

Two sources settle any Anthropic IPO claim: the SEC's EDGAR database and Anthropic's newsroom.

On EDGAR, search for the filer "Anthropic, PBC" and filter to form type S-1; the October 26, 2026 filing is the current document, and any Form S-1/A that follows will carry the price range.

Anthropic's newsroom has published a notice at each step, so a claim that appears on neither source is a report, not a fact.

The step-by-step guide to finding the filing is in Where Is Anthropic's S-1?.

Day-to-day developments, each labeled confirmed or reported, are logged in the latest Anthropic IPO news page.

What the Plans Still Depend On

Four things still have to happen before ANT can trade, and none of them is fully in Anthropic's control.

SEC review: the staff can issue comments on the public filing, and each round takes time to answer.
Nasdaq approval: the listing application is pending and is confirmed at pricing.
Investor demand: the roadshow sets the price range in practice, whatever the amended filing proposes.
Market conditions: Anthropic itself named these as a condition of the offering in June.

A fifth variable is the share structure: the S-1's summary risk factors flag a "novel capital structure" and concentrated voting power, and how investors value one-vote Class A shares under it will shape the price range.