Anthropic IPO 2026: Date, Valuation & Timeline

Anthropic publicly filed a Form S-1 with the SEC on October 26, 2026, for the proposed Anthropic IPO of its Class A common stock. The registration statement has been filed but is not yet effective, so no securities can be sold until the statement is effective. Anthropic plans to list on the Nasdaq Global Select Market as ANT, but the share count, price range, and listing date are not set. This article covers what the S-1 confirms, what remains reported or unconfirmed, and how trading Anthropic stock would work on tastytrade once it lists.

The Anthropic IPO has moved from a confidential filing to a public one, but the listing date, price, and offering valuation are not set.

Anthropic, the company behind the Claude AI models, confidentially submitted a draft S-1 registration statement to the Securities and Exchange Commission (SEC) on June 1, 2026, following a Series H funding round that set a $965 billion post-money valuation. On October 26, 2026, Anthropic publicly filed its S-1 and applied to list its Class A common stock on the Nasdaq Global Select Market under the symbol ANT.

This article covers what the S-1 confirms, what has been reported but not confirmed, and what has changed since the confidential filing.

When Is the Anthropic IPO Date? Timeline From Confidential Filing to Public S-1

The Anthropic IPO date has moved several times since reporting began. 

Each entry is attributed to its source. Dates marked "reported" are targets, not commitments.

Companies routinely adjust IPO timing around market conditions and regulatory review, and Anthropic's own spokespeople have not confirmed a settled date. Anyone searching for a specific day should treat any date they see, including the ones in this article, as a potential target rather than a certainty. 

How Prediction Markets Are Pricing the Anthropic IPO Timing

Since the exact listing date is still unknown, some traders have turned to event contracts to express a view on timing rather than waiting for confirmation.  

Event contracts, sometimes called prediction markets, let participants take a position on the binary of a specific event, like "Anthropic lists before November 1," allowing traders to potentially profit from market news.  

What Is Anthropic's IPO Valuation?

Anthropic's most recent confirmed private valuation is $965 billion post-money, set by its Series H funding round in May 2026, up from $380 billion after its Series G round in February 2026.  

More recent reporting has referenced investor discussions around figures as high as roughly $2 trillion, though that figure reflects public and market speculation rather than a company-confirmed number.  

This valuation reflects a steep climb in revenue.   

Per company disclosures, Anthropic's annualized revenue run rate grew from roughly $9 billion at the end of 2025 to about $47 billion by May 2026.  

Later reporting from Yahoo Finance put the run rate above $65 billion by the end of July 2026, alongside a reported first operating profit in the second quarter of the year.  

IPO valuations are notoriously volatile, and as can be seen with SPACEX, the largest IPO in history, the stock is just now trading around its IPO price (roughly $150) 3 months after its IPO. It reached $230 before slumping down to $110.  

Investors and traders should use their discretion when trading any stock post-IPO and understand the risks of a new and untested public company.  

Underwriters and Deal Structure Behind the Anthropic IPO

The S-1 cover page lists 22 underwriters, with Goldman Sachs & Co. LLC and Morgan Stanley listed first, followed by J.P. Morgan, Citigroup, Barclays, Wells Fargo Securities, and BofA Securities, among others. NBC News reports Goldman Sachs and Morgan Stanley are leading the offering, as they did for SpaceX. The underwriters have an option to buy additional shares from Anthropic.

As part of the process, the company is reported to be finalizing a $15 billion revolving credit facility alongside the listing.

Reporting has also indicated that Anthropic is weighing whether to let existing shareholders sell some of their shares as part of the IPO, paired with an extended lock-up period of more than 180 days, versus allowing shareholders to sell immediately.

A structure like this would be intended to manage how much stock hits the market in the months after the listing, potentially reducing IPO volatility.

None of these deal terms have been confirmed as final by the company.

Anthropic IPO Ticker and Exchange: What's Confirmed

Anthropic has applied to list its Class A common stock on the Nasdaq Global Select Market under the symbol "ANT," according to the S-1 and the company's October 26 announcement.

The listing becomes final when the registration statement takes effect and the offering prices.

Ticker symbols shown on charts or trackers before the offering prices may be placeholders and should be checked against the exchange listing once trading begins.

Can You Buy Anthropic Stock Before the IPO?

Private Anthropic shares bought before the IPO were generally restricted to insiders, and venture capitalists, those who are and were employed by Anthropic and those institutions which seeded funding capital in Anthropic’s start-up phase, when they were a private company.  

The primary market for the IPO, sometimes erroneously labeled as “pre-IPO shares,” is available to institutional investors, such as hedge funds, banks, brokerages, and others, and is available through certain brokers for participation by accredited investors. 

tastytrade doesn’t offer primary market IPO shares, but if you are an accredited investor, you can participate at the primary market through a broker who offers this service.  

How Anthropic's IPO Compares to OpenAI and SpaceX in the 2026 Wave

Anthropic's IPO is arriving alongside two other major private-company listings in 2026: SpaceX, which completed an IPO of more than $86 billion in June 2026, and OpenAI, which filed its own confidential draft S-1 on June 8, 2026, roughly a week after Anthropic.  

The comparison below reflects reported figures as of this writing and should not be construed as a recommendation of which is the stronger investment. 

What Are the Risks to Watch as Anthropic Goes Public?

The main reported risks, beyond general IPO risk, are public and private AI-backlash, price competition following OpenAI's reported price cuts, local opposition to data center construction, execution risk on the listing timeline itself, adoption risk in older companies, and general risks of an immature and growth-oriented industry. Not to mention Anthropic’s self-reported “existential risks” of A.I.  

CNBC has reported that AI-backlash-related risk factors are expected to appear in Anthropic's eventual public prospectus.  

Separately, competitive pricing pressure has intensified across the AI industry following reported price cuts from OpenAI, which could pressure Anthropic's premium-pricing model if it isn't matched by continued usage growth.  

Data center construction tied to AI infrastructure has also drawn local opposition in several markets, which could slow down the buildout that AI companies depend on.  

MIT management reports that companies adopting A.I. have initial productivity losses when integrating the new technology, meaning further adoption could be slowed by older and less digitally integrated companies, which have a harder time integrating A.I. into their businesses.  

Further, rapid growth is an attractor for investors and traders, but this growth comes with risk. A.I., despite its already legendary reputation, is not yet a fully established commercial sector and still has potential for rapid, large technological, regulatory, business, and ethical shifts.  

Lastly, there are the so-called “existential risk warnings” often reported by previous researchers of Anthropic, like former researcher Jacon Coxon after he resigned. Existential risks are risks that threaten the continued existence of humanity on a planetary scale. These warnings were previously considered science fiction, but A.I., a powerful and rapidly growing tool, has alarmed many in the industry by its parabolic growth. Reuters reported that approximately 80 pages of Anthropic’s 261-page confidential prospectus are dedicated to risk factors, versus 48 pages for its business.  

Existential risk warnings for A.I. have recently culminated in industry leaders calling for a slowdown in its development. If A.I. were to become sentient, rebellious, deceptive, or in some way become unmanageable for its creators, it is speculated it could operate autonomously, mimicking the Hugging Face incident, i.e. hacking third party organizations, or even culminate in a human-wide extinction event.  

Regardless, the Anthropic IPO poses significant risks, or potential rewards for investors and traders looking to trade it when it hits the markets.  

Getting an Account Ready Before the Anthropic Listing

Whatever a trader decides to do once Anthropic lists, opening an account, funding it, and completing a transfer from another broker (an ACAT transfer) all take time.

Please allow 1-3 business days for your account to be fully opened and plan accordingly for funding time, as settlement duration will vary depending on your funding method.

This is true regardless of which broker someone chooses.

tastytrade offers individual, joint, entity, and retirement account types, with no minimum deposit required to open an account, across mobile, desktop, and web platforms.

How Do You Trade Anthropic Stock on tastytrade When It Lists?

Once Anthropic completes its IPO, you can trade the stock on tastytrade the same way as any other listed stock, through the platform's stocks product. New stocks are generally listed sometime during the midday on the day it opens for trading.

What actually happens on listing day is worth understanding before placing an order.

The stock typically opens through an auction process that sets off the first print, and that first print can differ substantially from the reported offer price, sometimes by a wide margin in either direction.

The subsequent volatility and large swings in price mean that the trader should choose their order type wisely. Market orders, which are filled at the next available price, may fall victim to this volatility. On the flip side, limit orders, where you’re filled at a specific price, do not guarantee a fill.

Stock trading is included with a tastytrade account with zero commissions for trading.

Opening an account ahead of the listing is the practical step for anyone who wants to be ready when Anthropic starts trading.

Trading Options on Anthropic After It Lists

Options will not be available on Anthropic immediately after its IPO.

Exchanges generally require a settling-in period, often measured in weeks to months, before options are listed on a newly public name, so there's no fixed date to expect them for Anthropic, and no guarantee they'll be available by any specific point.

When options are first listed on a recent IPO, they tend to carry wider bid-ask spreads and elevated implied volatility compared to options on more established stocks, reflecting the market's uncertainty about how the new stock will trade.

tastytrade's options platform displays probability of profit natively on every position, amongst other tools, which can be useful context once options become available on a name like Anthropic.

Options involve risk and are not suitable for all investors, so before trading options, read the Characteristics and Risks of Standardized Options.

What Investors Should Watch Next

After the public S-1 filing, we now know the ticker (ANT), the exchange (Nasdaq), and the first-half financials, but there are still a few items that remain in question:

• An amended S-1 with the share count and price range, which typically precedes the roadshow
• The roadshow start, reported as possible from the week of November 9, but not guaranteed
• The pricing date and first trading day, reported as targeted before Thanksgiving
• The date the SEC declares the registration statement effective
• The date exchanges list options on ANT, which has not been announced

Regardless, whatever timeline ends up holding, being prepared is your best bet, and first step.

Opening and funding a brokerage account ahead of time is the step that's actionable today, independent of whether the listing happens in October, November, or later.