Anthropic IPO by November 30, 2026 priced at 77.5% on Polymarket, down 8.5 points, on $569K traded

Polymarket’s contract on whether Anthropic will complete an IPO by November 30, 2026 was priced at 77.5%, down 8.5 probability points, with $569K traded, according to the supplied market headline published Oct 31, 2026 at 5:54 AM ET. The price still favored an IPO before the deadline, despite the decline.

A repricing without an identified catalyst

The accompanying summary reported no significant new platform headline in the preceding 30 minutes. Its news search resurfaced previously reviewed material from Oct. 30-31, rather than identifying a fresh explanation for the move.

That leaves the catalyst unresolved. The supplied material contains no new Anthropic announcement or IPO filing that would explain the lower price, and the market move alone does not establish a change in the company’s plans.

What the market data establishes

According to predictionbubbles.net, its movers page measures changes over 24 hours in probability points, using prices from Polymarket and Kalshi. The supplied page records a venue-data snapshot of 31 Oct 2026, 09:41 UTC and says it refreshes every 15 minutes.

The excerpt provides the tracker’s methodology but does not display an Anthropic-specific entry. The 77.5% price, 8.5-point decline and $569K traded therefore come from the supplied headline; the excerpt does not independently confirm those figures or specify the period covered by that volume.

What it means for prediction markets

• Timing is the central question: The contract concerns an IPO by November 30, 2026, not whether Anthropic will eventually go public.
• The decline is in probability points: An 8.5-point move should not be described as an 8.5% relative decrease.
• Volume does not establish liquidity: The reported $569K traded provides activity context, but the supplied material gives no order-book depth.
• The catalyst remains unverified: The price change shows a shift in market expectations, not confirmation of a corporate development.