Anthropic Files S-1, Lays Out Nasdaq Listing Under "ANT"
Anthropic has filed its S-1 prospectus with the Securities and Exchange Commission, and the company plans to list on the Nasdaq under the ticker symbol "ANT." The Verge reported the filing on October 26, 2026.
The filing reports $16.3 billion in revenue and an $80.7 billion net loss for the first half of the year. For comparison, Reuters reported in late September that Anthropic lost $42 billion in 2025 and that its operating loss had widened to $8.06 billion. Reuters also reported that the IPO could value the company at more than $2 trillion.
The path to the public filing ran through a confidential submission. Anthropic confidentially filed with the SEC in June, ahead of the S-1 now on the public record. Timing reports moved over the late summer and early autumn. In late August, Reuters reported that the company planned to unveil its prospectus after Labor Day and had targeted a listing in late September or early October. In early September, Reuters reported that marketing of the offering was expected to begin in mid-October at the earliest. On October 21, Yahoo Finance reported, citing three people familiar with the matter, that the company was expected to publicly file its S-1 as soon as that Friday. The public filing has since come, roughly a month behind the earliest of those targets.
Reuters also reported that Anthropic plans to warn prospective IPO investors that advanced AI could pose catastrophic or existential risks to humanity. That risk language is a standard feature of a risk-factors section, but in this case it is written by a frontier model developer about its own core product, and it will sit alongside the revenue and loss figures in front of institutional buyers.
The broader context here is the shape of the numbers. A first-half net loss of $80.7 billion against $16.3 billion in revenue is a loss profile that depends on continued access to capital and on investors accepting a long horizon before margins turn. Compute commitments for training and inference are the obvious drivers. Anyone modelling the company will want the cost of revenue, the depreciation schedule on accelerators, and the contractual obligations once they are read in full, rather than the headline totals.
The valuation reported by Reuters, above $2 trillion, would place a company founded in 2021 in a bracket that few public software or semiconductor companies occupy. That comparison matters less than the question of what the market is being asked to price: a revenue line growing quickly against losses that scale with it. Public-market investors have priced AI infrastructure before, and the cloud buildout of the last decade offers a useful reference for how long capital intensity can persist before it compresses. The difference is the sheer scale of the cash burn now disclosed in a single document.
For enterprise buyers and developers who depend on Anthropic's models, a public listing brings quarterly reporting, disclosure obligations and a board that answers to shareholders. Those constraints can shape pricing, product cadence and the willingness to absorb losses on a given tier. For the broader market, the filing offers the first detailed look at the financial structure of a frontier lab operating at this scale, and it will be read closely by competitors and by the labs' customers.
The ticker "ANT" is short and, for a company whose products are sold to developers through APIs and enterprise contracts, the listing will test whether public investors value the model layer differently from the compute layer beneath it. The answer will emerge over the coming months as the offering is marketed and priced, and as the full prospectus is parsed line by line.
