OpenAI IPO Closing Market Cap
0.1 pts (24h)ExchangeAIOne-OffCorporate ActionsEquitiesBusiness & Corporate2mo
PolymarketCheck availabilityNo KYCVerified resolution dataWell calibratedSelected book midpoint
No IPO by December 31, 2026 · —
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Stored reference
No IPO by December 31, 2026 97%Leader of 7 outcomes
No IPO by December 31, 2026 97%Market quality
82 / 100
High quality24h Volume
$5.2K
Liquidity
$210.3K
High liquidityOpen interest
$126.4K
Bid / Ask
— / —
No IPO by December 31, 2026Spread
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Comments
0
7d Change
-0.3 pts
Market data
Updated 7 minutes ago
Sep 23, 25, 12:22 AM 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.
Venue terms
Source: Polymarket
Informational venue terms only; CoinRithm paper trading uses its own rules.
- Minimum order (shares):
- 5
- Tick size:
- 0.1 percentage points
- Fees:
- Yes
Top holders
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Market depth · No IPO by December 31, 2026
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Related Markets
Related questions for context, not a comparison of equivalent contracts.
Rules
This market will resolve based on OpenAI's market capitalization at the closing price on its first day of trading.
- If no IPO occurs by December 31, 2026, 11:59 PM ET, the market will resolve to "the named outcome".
- Market capitalization expresses the monetary value of a company’s outstanding shares, stated in its pricing currency.
- It is calculated as the number of shares outstanding multiplied by the closing share price on the first trading day.
- If the relevant value falls exactly between two brackets, then this market will resolve to the higher range bracket.
- Resolution will be based on the primary exchange’s official listing page.
Prediction Source Comparison
- Also available on Manifold Markets — OpenAI closing market cap on IPO day? · 1 trillion or higher? 94%
- Also available on Polymarket — OpenAI IPO Closing Market Cap · 1.5T+ 43%
