Anthropic Files to Sell Shares to the Public, and Its Losses Are Large
Anthropic, PBC filed its IPO paperwork with the U.S. Securities and Exchange Commission on October 26, 2026. An IPO, or initial public offering, is the first time a company sells its shares to ordinary investors on a stock market.
The company announced the filing in its newsroom. The document now appears on SEC EDGAR, the government's public database of company filings, under the title "Anthropic, PBC - S-1."
An S-1 is the document a company files before selling stock to the public in the United States. It describes the business, lists the risks, and includes audited financial statements, which are accounts checked by an outside accountant. Investors and the banks running the sale read it closely before a price is set. Filing starts the public phase, but it does not set a price or the size of the deal. Those terms can still change.
Earlier, Anthropic had confidentially submitted a draft S-1 to the SEC. That let regulators review the draft out of public view. The company's announcement of that submission is dated June 1, 2026.
Timing is the next thing to watch. Reuters reported on October 23 that Anthropic is expected to start marketing its shares to possible buyers in the week of November 9. Dates like these often move when markets shift.
The numbers are where most of the attention will go. Reuters reported on September 29 that Anthropic lost $42 billion in 2025. A draft prospectus, as reported by The Wall Street Journal on October 20, disclosed an $80.7 billion net loss for the first half of 2026. Over the same six months, the company reported $16.3 billion in revenue, according to Yahoo Finance on October 21.
Net loss is what is left after every cost is paid. Think of a shop that spends more on rent and stock than it takes at the till. Anthropic's costs include computing power, staff, and spending on equipment and buildings.
Put side by side, the first-half loss is roughly twice the full-year 2025 loss. It is also about five times first-half revenue. That means the company spent far more than it brought in.
In my view, the key point for an ordinary saver is simple. Revenue is growing, but costs are growing faster, and that gap has to be financed by someone.
Reuters reported on September 29 that the offering could value Anthropic at more than $2 trillion. That is a projection from reporting, not a set price.
My concern is that the figure leans on future growth the company has not yet shown at the scale of its losses. Investors will be weighing a business with large sales against costs that, on the disclosed figures, have not yet narrowed the gap.
Three things will shape how the offering looks once marketing opens. The first is how the company explains its path from losses to profit, and whether the risk section gives investors enough detail to judge it. The second is the number of shares and the price range it proposes, since the implied value depends on both. The third is whether demand for large AI listings holds up between filing and pricing, a stretch when moods can change quickly.
For now, the confirmed record is short. A public S-1 has been filed, a confidential draft came first, marketing is expected to start the week of November 9, and the disclosed losses are large compared with revenue. The offering size, the price, and how the shares trade will come from later filings and the market itself.
