PolymarketCheck availabilityNo KYCVerified resolution dataWell calibratedSelected book midpoint
December 31, · —
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Stored reference
December 31, 78%Leader of 10 outcomes
December 31, 78%Market quality
≤74 / 100
Medium quality24h Volume
$42.3K
Liquidity
$228.5K
High liquidityOpen interest
$690.7K
Bid / Ask
— / —
December 31,Spread
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Comments
51
7d Change
+9.0 pts
Market data
Updated 14 minutes ago
Jun 1, 26, 9:08 PM UTCJan 1, 27, 4:59 AM UTC
Chart and changes show stored historical probabilities, not the selected live book.
Trends
Selected row: book midpoint. Other rows: stored references, possibly normalized; 24h changes use stored history.
July 31,Lost
June 30,Lost
October 15,Lost
Before close: 0% ·
September 15,Lost
Before close: 0% ·
September 30,Lost
Before close: 0% ·
Venue terms
Source: Polymarket
Informational venue terms only; CoinRithm paper trading uses its own rules.
- Minimum order (shares):
- 5
- Tick size:
- 1 percentage points
- Fees:
- Yes
Top holders
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Market depth · December 31,
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Related Markets
Related questions for context, not a comparison of equivalent contracts.
When will Anthropic officially announce an IPO?
KalshiWhat Month in 2026 Will Anthropic IPO in?
Manifold MarketsAt what valuation will Anthropic IPO? (buckets within $2-3T)
Manifold MarketsWill Anthropic’s IPO Form S-1 be public by 31 October 2026?
Manifold MarketsWhich week will Anthropic's IPO prospectus (Form S-1) go public on SEC EDGAR?
Manifold MarketsAnthropic IPO Closing Market Cap
PolymarketRules
This market will resolve to "Yes" if Anthropic shares are listed on a public securities exchange and open for trading by 11:59 PM ET on the listed date.
- Otherwise, this market will resolve to "No."
- If Anthropic is acquired by another company that is already public, this market will immediately resolve to "No."
- The primary resolution source for this market is official filings and announcements from Anthropic and the relevant securities exchange on which the shares are listed, including SEC filings (e.g., Form S-1, Form 8-A), exchange listing confirmations, and official press releases from Anthropic; however a consensus of credible reporting may also be used.
Prediction Source Comparison
- Also available on Manifold Markets — Will Anthropic IPO by….? · December 31 11.59pm ET 75%
- Also available on Limitless — Anthropic IPO by __? · December 31, 2026 78%