Anthropic, PBC confidentially submitted a draft registration statement on Form S-1 to the SEC on June 1, 2026 (Anthropic's own announcement, CNBC). A confidential draft is not public and is not visible on EDGAR. At some point before a roadshow, the company must "flip" the filing public — the prospectus has to be in investors' hands at least 15 days before the roadshow begins.

This market asks whether that public flip happens by the end of October 2026.

Resolution criteria

Resolves YES if, on or before October 31, 2026 (EDGAR filing date, US Eastern time), a Form S-1 registration statement (or an S-1/A amendment that makes the previously confidential draft publicly available) filed by Anthropic, PBC — or by a renamed/reorganized successor entity for the same company — is publicly viewable on the SEC's EDGAR system at https://www.sec.gov/cgi-bin/browse-edgar and https://efts.sec.gov/LATEST/search-index?q=anthropic

Resolves NO otherwise, including if Anthropic's registration remains confidential, is withdrawn, or the company goes public by a route that does not involve a public S-1 on EDGAR by that date.

The oracle is EDGAR itself — not news reporting, not my judgment. If EDGAR shows a public Anthropic S-1 dated on or before 2026-10-31, it is YES; if it does not, it is NO. Anyone can check this at the link above.

Notes

• A press report saying Anthropic "plans to" or "is preparing to" go public does not count. The document has to be on EDGAR.

• An IPO pricing or listing occurring without a publicly filed S-1 on EDGAR by the deadline resolves NO (this would be surprising, but the criterion is the filing, not the listing).