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Anthropic files S-1 with the SEC for proposed initial public offering

By Alexis Dufresne Published October 26, 2026 at 18:12 UTC

Summary

Anthropic files S-1 with the SEC for proposed initial public offering

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Tim Kellogg @timkellogg.me: Anthropic filed their S-1, a required document for IPO * $80B on-paper loss in H1 ‘26 * 900% revenue retention * $430B in non-cancelable co… →
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Anthropic IPO announcement.
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Original headline: Anthropic files S-1 with the SEC for proposed initial public offering