Anthropic IPO Polymarket odds put the chance of a public sale by December 31, 2026, at 82%, with November as the leading month at roughly 60%–61%; October is near 3%. Kalshi’s odds of an announcement before November rose from 4.7% on September 28 to 16% on September 30.
Reports of IPO preparations and a possible public prospectus in the coming weeks offer a potential catalyst, but not confirmation. A chart or embedded market-odds post would fit here: the contrast between near-term timing and year-end confidence is the story.
The valuation question is less settled. A $2 trillion-plus listing would price in substantial growth and execution, while AI-safety disclosures could sharpen scrutiny of the business. What do the contracts actually say about timing and scale?

What Do Anthropic IPO Polymarket Odds Say About Timing and Valuation?
Prediction-market prices, not a conventional stock chart, are the relevant levels here. Polymarket’s 82% year-end probability acts as the main reference point for the 2026 listing thesis.
A sustained decline below roughly 80% would signal weakening confidence in a completed IPO by December 31; a move higher would reinforce it. These are market-implied odds, not guarantees.
The timing setup has shifted decisively. October is priced at about 3% for the expected listing month, compared with roughly 60%–61% for November. Separately, an October 31 confirmation contract sits at 18%, a different market question that should not be conflated with the month-by-month listing odds.
Valuation is the tougher trade. The leading closing-market-cap brackets are 27% for $2.0 trillion–$2.25 trillion and 24% for $2.25 trillion–$2.5 trillion, a combined 51%. That concentration shows substantial appetite for a $2 trillion-plus outcome, but not a clear consensus on the exact range.
Recent reporting puts annualized revenue on a steep trajectory, while infrastructure spending above $500Bn raises the bar for future growth and profitability. Polymarket’s Anthropic IPO market and its IPO valuation contracts offer separate reads on those questions.
Bull case: Public filing or confirmed timetable keeps year-end odds above 80% and supports the November lead.
Base case: Preparation advances, but timing remains fluid.
Bear case: Delays, weaker revenue disclosures, or tougher investor scrutiny push the year-end probability below that reference level.
Could LiquidChain Benefit as Anthropic’s IPO Tests AI Appetite?

A strong year-end IPO probability supports demand for AI exposure, but a $2 trillion valuation leaves little room for casual assumptions about upside.
If the timetable slips or valuation expectations reset, investors may look beyond large private-company listings toward infrastructure with a more defined use case. That is a rotation thesis, not a hedge against IPO delays.
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Anthropic IPO S-1 prospectus LEAKED: