A Nov. 7 snapshot on Polymarket’s Anthropic IPO Date market put the chance of no listing by Nov. 30, 2026, at 19%, while Anthropic’s SEC filing gives no public-sale date.
At noon ET Nov. 6 (17:00 UTC), Polymarket’s experimental summary recorded a 41.5% chance for the same result. The Nov. 7 quote lacks an hour marker, which rules out a direct comparison with the earlier reading. The 19% figure is tied to the contract’s defined outcome; Anthropic has not announced an IPO date.
Anthropic’s Oct. 26 Form S-1 says the proposed share sale could start “as soon as practicable” after the registration statement becomes effective, but gives no calendar date. The company filed an S-1/A amendment Nov. 2.
