# Anthropic Files for IPO, Revealing $80.7 Billion First-Half Loss and Nasdaq Ticker ANT The Claude maker’s public S-1 lays out plans to list on Nasdaq while showing $16.3 billion in first-half revenue, steep accounting losses and no final share count or price range yet. By The Signal Edition | Business / Technology Published: 2026-10-26T14:10:21Z Updated: 2026-10-26T14:10:21Z Canonical: https://www.thesignaledition.com/article/anthropic-ipo-1g8pj9t-20261026 Image: https://www.thesignaledition.com/media/1f756713729c950b2e3c90e546066320.jpg (Anthropic CEO Dario Amodei speaking beneath a Code with Claude banner at the company’s developer conference; credit: Source: Los Angeles Times) ## Summary - Anthropic publicly filed a Form S-1 registration statement on Oct. 26, 2026, for a proposed IPO of Class A common stock. - The company intends to list on the Nasdaq Global Select Market under the ticker symbol ANT; share count and price range have not been determined. - Anthropic reported $16.3 billion in first-half 2026 revenue and an $80.7 billion net loss, much of it tied to the accounting value of convertible bonds. ## A public filing, but no IPO price yet Anthropic, the San Francisco company behind Claude, filed a public Form S-1 with the U.S. Securities and Exchange Commission on Monday, Oct. 26, 2026, beginning the formal disclosure process for a proposed initial public offering. The company said it intends to list Class A common stock on the Nasdaq Global Select Market under the symbol ANT. The filing is not yet effective, and Anthropic said the number of shares and price range have not been set, so investors do not yet have final offering terms. [1](https://www.anthropic.com/news/s1-sec) [2](https://www.investing.com/news/stock-market-news/anthropic-opens-books-on-ais-explosive-growth-and-staggering-costs-4972801) The public filing follows Anthropic’s June announcement that it had confidentially submitted a draft S-1. At that stage, the company said any IPO would depend on SEC review, market conditions and other factors. Monday’s filing moves the process into public view, but it does not by itself mean shares are available to buy or that a trading date is fixed. [1](https://www.anthropic.com/news/s1-sec) [3](https://www.anthropic.com/news/confidential-draft-s1-sec) ## Rapid sales growth alongside an outsized loss Anthropic reported about $16.3 billion in revenue for the first six months of 2026 and a net loss of $80.7 billion, Reuters reported from the prospectus. The loss was largely driven by an increase in the fair value of bonds convertible into company shares, rather than a comparable cash operating loss. Revenue in the three months ending June 30 was 1,368% higher than a year earlier, underscoring the extraordinary pace of expansion as businesses adopt Claude and related AI services. [2](https://www.investing.com/news/stock-market-news/anthropic-opens-books-on-ais-explosive-growth-and-staggering-costs-4972801) The figures put a sharp focus on the economics of frontier AI: demand can scale quickly, but developing and operating advanced models requires heavy investment in computing infrastructure. Anthropic’s filing identifies compute and infrastructure as its largest operating expense for the foreseeable future and says those costs are expected to rise in absolute dollars. The company also disclosed customer and distribution concentration, a reminder that fast growth brings exposure to a relatively narrow commercial base. [2](https://www.investing.com/news/stock-market-news/anthropic-opens-books-on-ais-explosive-growth-and-staggering-costs-4972801) ## What the listing could mean for AI investors An IPO would give Anthropic access to public-market capital as it competes with OpenAI, Google and other developers for customers, computing capacity and talent. The Associated Press reported that the filing also describes risks including difficulty retaining employees, regulatory barriers and securing enough compute. The document warns that Anthropic’s models could create catastrophic or existential risks, bringing the company’s safety claims and commercial ambitions into the same prospectus. [2](https://www.investing.com/news/stock-market-news/anthropic-opens-books-on-ais-explosive-growth-and-staggering-costs-4972801) [4](https://apnews.com/article/anthropic-ipo-shares-public-ca2f4c282bef3201a392e59e3df2300c) The filing does not establish Anthropic’s eventual valuation, how much it will raise, the number of shares offered or when trading will begin. Those details may change as regulators review the registration statement and the company gauges investor demand. For now, the S-1 gives the market a first public, detailed look at the business and the costs behind one of the most closely watched AI companies, while leaving the central question of IPO pricing unanswered. [1](https://www.anthropic.com/news/s1-sec) [2](https://www.investing.com/news/stock-market-news/anthropic-opens-books-on-ais-explosive-growth-and-staggering-costs-4972801) ## Reporting sources 1. [Anthropic: Anthropic files S-1 with the SEC for proposed initial public offering](https://www.anthropic.com/news/s1-sec) (2026-10-26) 2. [Reuters: Anthropic’s IPO filing shows explosive growth, risks and staggering costs](https://www.investing.com/news/stock-market-news/anthropic-opens-books-on-ais-explosive-growth-and-staggering-costs-4972801) (2026-10-26) 3. [Anthropic: Anthropic confidentially submits draft S-1 to the SEC](https://www.anthropic.com/news/confidential-draft-s1-sec) (2026-06-01) 4. [The Associated Press: Artificial intelligence giant Anthropic files papers to sell shares to the public for the first time](https://apnews.com/article/anthropic-ipo-shares-public-ca2f4c282bef3201a392e59e3df2300c) (2026-10-26)