Anthropic IPO by November 30, 2026 priced at 90.0% on Polymarket, up 38.5 points, on $517K traded

Polymarket’s contract on whether Anthropic will IPO by November 30, 2026 was priced at 90.0%, up 38.5 probability points, with $517K traded, as reported in the October 26, 2026 update published at 3:09 PM ET.

According to PredictionBubbles’ movers board, the contract was the largest upward mover and appeared in the finance category. The change measures a shift in traders’ pricing over 24 hours, rather than confirmation that an IPO will occur.

How the move was measured

PredictionBubbles’ supplied snapshot drew venue prices on 26 Oct 2026, 18:33 UTC. The service refreshes every 15 minutes and tracks markets on Polymarket and Kalshi, ranking moves by their absolute change in probability points—not their relative percentage gain.

The ranking covered 1,993 markets with lifespans longer than 14 days. Only open contracts with a valid 24-hour comparison qualified. The displayed table contained the top 150 of 531 markets that had moved at least one probability point; trading volume and liquidity provide context but do not affect the ranking.

IPO timing versus an announcement

The board also listed a separate Anthropic question concerning an official IPO announcement before Jan 1, 2027. That is a different event from an IPO by November 30, 2026, so the two contracts should not be treated as interchangeable measures of the same deadline.

The supplied material does not identify a company announcement, filing or other specific catalyst for the repricing. Nor does it provide order-book depth or specify the period covered by the headline’s $517K traded figure. Those gaps limit what can be inferred about the move beyond the reported price change.

What it means for prediction markets

• The size of the repricing is the central signal: the 38.5-point rise describes a substantial change in the contract’s market-implied probability, not independent verification of an IPO timetable.
• Contract wording matters: an IPO by November 30, 2026 and an announcement before Jan 1, 2027 concern different milestones.
• Volume does not establish liquidity: $517K traded supplies activity context, but without depth data it cannot show how much trading was needed to move the price.
• The ranking has a defined scope: the largest upward move refers to PredictionBubbles’ eligible market set and 24-hour window, not every contract on either venue.