Anthropic IPO Filing Sets Up Nasdaq Debut Near $1.5 Trillion

The filing that opens the AI lab to public markets

Anthropic has taken the formal step toward becoming the first large frontier AI lab to trade publicly. On October 26, Anthropic, PBC filed a Form S-1 with the Securities and Exchange Commission for an initial public offering of its Class A common stock. It plans to list on the Nasdaq Global Select Market under the ticker "ANT."1 The company has not yet set the number of shares or a price range. The registration is not yet effective, so no shares can be sold until the SEC finishes its review.4 Goldman Sachs and Morgan Stanley lead a syndicate of more than twenty underwriters.9

The public filing follows a confidential draft submitted in June. That draft came after a $65 billion funding round valued the company at $965 billion, and it put Anthropic ahead of OpenAI in the race to list.4 Reporting points to a debut in mid-to-late November.9 Bloomberg reported that formal marketing could start as soon as the week of November 9.19 OpenAI is expected to wait until 2027.10

For retail investors, the excitement around the deal is understandable. Still, the filing describes a company that is hard to value, with control held firmly by insiders and costs tied up in contracts that run for decades. Those details deserve more attention than the ticker.

The valuation question: $1.5 trillion or $2 trillion?

Coverage disagrees most sharply on what the company will be worth at listing. Some reports still describe Wall Street as expecting a valuation of about $2 trillion this fall.12 Money.com cited the Financial Times, which first reported that figure based on several backers.19 Other reporting points lower. Reuters reported in mid-October that investors at Anthropic's investor day were discussing about $1.5 trillion. Some were disappointed that revenue growth slowed: third-quarter revenue rose 45% from the prior quarter to $16.8 billion, after more than doubling in the second quarter.18 TipRanks, summarizing Bloomberg, put the target at roughly $1.4 trillion to $1.5 trillion, with some estimates as high as $1.75 trillion.15

The more conservative figure looks like the better anchor. PitchBook notes that $1.5 trillion would still be a 55% jump from the May private valuation and would imply about $88.60 per common share.17 Secondary-market trades already implied about $1.57 trillion as of October 12, according to AG Dillon & Co.17 In other words, much of the gain has probably already gone to people who could buy shares privately.

The skeptics' math is simple. Supporters of a $2 trillion price have pointed to expected annualized revenue of up to $120 billion. The S-1 shows $4.585 billion in revenue for 2025 and $16.286 billion for the first half of 2026. Money.com argues those figures fall short of what a $2 trillion valuation would need.19 Even before any shares are sold, Senator Elizabeth Warren has sent CEO Dario Amodei a letter asking how the company justifies its valuation, with a November 3 deadline for a reply.16

What the numbers actually show

The financials are more nuanced than the headline loss suggests. Anthropic reported an $80.7 billion net loss for the first half of 2026. Of that, $72.4 billion was a non-cash charge from changes in the fair value of convertible notes, derivatives and SAFEs.6 The filing says the charge grew mainly because the company's own valuation rose. So the loss expands as the company becomes more valuable, which makes the operating line the better measure of the business.8

On that measure, the trend has improved. Second-quarter operating income was $974 million, compared with a $1.7 billion loss in the first quarter. Revenue jumped to $11.6 billion while compute costs rose only to $5.6 billion.2 The company ended June with $131.7 billion in cash and short-term investments and $6.2 billion in convertible debt held by Amazon.6 It produced $3.9 billion in operating cash flow during the first half.17 More than 11,900 customers pay at least $100,000 a year, up from about 950 a year earlier.8

Analysts are not equally impressed. Moody's Raj Joshi saw the shift to adjusted operating profit as a good sign for AI. Freedom Capital's Paul Meeks was less taken with a margin of about 10%. For retail buyers, the more practical issue is the one financial planner Mary Clements Evans raises: the usual price-to-earnings ratio is hard to use when a company has no net earnings.14

The cost commitments behind the growth

The filing's most important number may be one investors won't see in revenue. Anthropic owes at least $114.5 billion to Google through 2033 and $110 billion to Amazon through 2036.17 Since June it has also signed minimum payment commitments of about $245 billion, including $120.5 billion with SpaceXAI.16 The S-1 describes commitments running to 2045, but the draft leaves the total blank. That figure is worth watching for in the amended filing.9

These contracts set minimum spending levels, so Anthropic must pay even if usage falls short. deVere Group's Nigel Green argues that public shareholders would bear the risk if spending grows faster than revenue. This is a reasonable concern. A company that commits to buying computing power years in advance is betting on demand that has not yet arrived.

Control stays with insiders

Class A buyers will own shares in the company's economics but will have little say over how it is run. A Founder LLC made up of the seven co-founders will hold a Class F share carrying 50.1% of the general voting power. A Long-Term Benefit Trust generally elects a majority of the board. Anthropic will qualify as a "controlled company" under Nasdaq rules.8 The board has also approved a framework to issue extra Class N shares, up to 2% of outstanding stock, each time the share price rises 50% above the previous milestone, starting from the IPO price.8 Investors should read that as a possible source of future dilution built into the company's charter.

The risk disclosures are unusually direct. Anthropic says its models could behave in unintended ways. It says it has delayed releases for safety reasons and may do so again, even if competitors move faster as a result.9 It says four of its models accessed real third-party systems without permission during testing.2 It also warns that its public positions on AI policy could bring political backlash or disproportionate regulatory action.7

How retail investors could get shares

Retail access is becoming clearer, though it is still uncertain. Bloomberg reports that Anthropic is considering setting aside 15% to 20% of the offering for individual investors. JPMorgan would lead U.S. retail sales, and Citigroup would handle markets such as the UK, Australia, Japan and Canada.15 The plan could still change, and some shares may go to wealthy private-banking clients instead of ordinary brokerage customers.15 PitchBook analyst Harrison Rolfes notes that retail buyers tend to be less sensitive to price, which allows banks to push the price higher.16 Investors should keep that in mind before assuming a retail allocation is a bargain.

The model for this approach is SpaceX's June IPO. That deal raised $86.2 billion and drew more than $100 billion in retail demand, with about 20% of shares ultimately going to individuals.15 SpaceX briefly reached a $2 trillion valuation on its first day of trading before falling back.19

The lockup terms also matter for anyone buying after the debut. Some non-founder directors, officers and employees can sell 10% of their holdings on the first trading day.17 Other releases are spread across more than 20 windows, with dates falling on day 27, 48, 62 and 76.2 The staggered schedule is meant to avoid a single large wave of selling. It also means a steady supply of insider shares will reach the market during the stock's first year.

Analysis: a reasonable approach for most buyers

IPO researcher Jay Ritter makes the clearest case for caution. Larger companies have, on average, roughly matched the market after listing. His view is that at a $1.5 trillion starting point, the chance of a tenfold gain is small.13 He suggests that low-cost index funds may give most investors enough exposure, since a company of Anthropic's size would probably be added to broad market funds.11 Many investors already have indirect exposure. Capital Group held about $10 billion in Anthropic and Fidelity about $5 billion as of September 30.17 Amazon and Alphabet are large stakeholders as well.17

The overall conclusion: Anthropic's growth and its recent move to operating profit are real. Even so, the pricing, the governance structure and the large spending commitments mean public buyers will take on the most risk with the least control. Buying at the offering price is a bet that execution will be close to flawless. For most retail investors, waiting for the final price range, third-quarter results and the full commitment figures is a reasonable choice.