PolymarketAI / TechDevelopingUpdated 1h ago

Will Anthropic IPO by December 31, 2026?

As of Oct 29, 2026, 8:37 PM ET, Polymarket priced this market at 94.5% (little changed over 24 hours). It had $7K traded in the past 24 hours, $34K of order-book liquidity and a bid-ask spread of 0.7 pts. probcast.co rates the support behind this price as moderate.

Market probability
94.5%
Little changed over 24 hours
Not live — snapshot Oct 29, 8:37 PM ET

Thin market where small orders can move the price, with broad trading across many accounts.

Price historyPolymarket

Source: Polymarket price history

How credible was the move?

Methodology →

Move validity

Moderate

Consensus stability

Stable

Contract clarity

High

Can you trust this price?

Two different questions: how hard the price is to move, and whose trading set it.

Market capacity

How hard is it to move this price?

ThinTight spread

Order-book liquidity

$34K

Bid-ask spread

0.7 pts

24h volume

$7K

Total volume

$1.5M

It would take roughly $136.2K of buying to move the price up by ~5 pts.

Little money on the book — a modest order can move this price, so treat swings with care.

Who's trading

Whose opinion is this price?

Broad participation
16%of the traded money came from the single largest account

Accounts

133

Trades

200

over 3 days

Largest order

$8K

$50.7K traded across these 200 trades (last 3 days).

Many independent accounts traded — the price reflects a crowd, not one trader.

Recent trade activity$50.7K traded

From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.

What this market actually measures

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 r…

This summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.

View full official resolution rules

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.

What could move this market next?

  • The market's deadline arrivesDecember 31, 2026 at 11:59 PM ET

    The contract must resolve based on what has happened by this date.

Derived from the contract's own mechanics as of Oct 29, 9:58 PM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.

Advanced analysis (experimental)

Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: low · expected error ±13 pts.

Quote-drivenLegacy movement classifier: watch

What's happening

low classifier confidence
Quote-driven

A tight, deep, quote-driven book with little executed flow. The price is stable but reflects resting quotes more than active trading.

  • Tight spread on a liquid, calm market

The latest price is a usable but caveated read — weigh it with the market state.

More details — reliability score, dynamics, durability
Reliability score
42Medium
Where the price path tends to go next1222 observed
  • Choppy / mean-reverting96%
  • Stable consensus1%

Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.

DurabilityHigh· half-life —
PredictabilityStable

Secondary read: leaning toward Thin market.

A read-only classification of the market environment — how much weight the current price deserves as a read of consensus. It describes conditions, never a trade.

Change (pts)1H0.06H0.024H0.07D0.0

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