Will OpenAI’s market cap be between $1.25T and $1.5T at market close on IPO day?
Probability
4¢
1h
+0.0pp
24h
+0.1pp
24h Vol
$10.00
Liquidity
$4.6K
Canonical status
confidence: highSource status (Polymarket)
Derived status (Orrery)
Reason
Active market, expiry beyond the near-expiry window.
Resolution & Risk
LOW risk- End date
- Jun 30, 2026
- UMA status
- n/a
- Resolution source
- PrimaryOpenAI's market capitalization at the closing price on its first day of tradingTypeAmbiguous wordingConfidenceextracted · low
- Market type
- Multi-outcome (neg-risk)
- Part of a multi-outcome event (neg-risk): only one market can resolve YES.
Probability (last 7 days)
+0.3pp 7dWhy did it move?
Structured · 2 factors- 01Active signal
Resolution-risk observation firing
Resolution source is ambiguous or relies on public-figure statements — verify before treating price as the market view.
- 02Liquidity
Thin liquidity
Only $4.6k of visible book — small orders can move the line. Treat the probability as a soft estimate.
What to track next
- Verify the resolution source on this page — exchange feed, official release, news consensus — before treating any move as new information.
Verification actions only — never trade recommendations.
Each factor is grounded in a single named metric you can verify on this page — probability, volume, liquidity, signal, resolution state. No predictions, no prose hallucinations.
Resolution & Risk
LOW risk- End date
- Jun 30, 2026
- UMA status
- n/a
- Resolution source
- PrimaryOpenAI's market capitalization at the closing price on its first day of tradingTypeAmbiguous wordingConfidenceextracted · low
- Market type
- Multi-outcome (neg-risk)
- Part of a multi-outcome event (neg-risk): only one market can resolve YES.
Timeline
critical · price · trade flowCritical
- Jun 30, 00:00 UTCScheduled resolutionLOW
Market resolves in 1024.8h
- 07:11SignalLOW
Resolution risk
Resolution source is ambiguous or relies on public-figure statements — verify before treating price as the market view.
Price movement
+0.1pp over the last 24h, now 4¢.
Active signals
Recent Trades
1- BUYYESMay 18, 07:11 UTC
Related Markets
6- 1¢0.0
Will OpenAI’s market cap be less than $500B at market close on IPO day?
Business · Vol $2.05
- 3¢0.0
Will OpenAI’s market cap be between $500B and $750B at market close on IPO day?
Business · Vol $7.21
- 2¢0.0
Will OpenAI’s market cap be between $750B and $1T at market close on IPO day?
Business · Vol $5.00
- 3¢+0.5
Will OpenAI’s market cap be between $1T and $1.25T at market close on IPO day?
Business · Vol $16.04
- 9¢+0.4
Will OpenAI’s market cap be $1.5T or greater at market close on IPO day?
Business · Vol $0.00
- 68¢-6.5
Will OpenAI not IPO by December 31, 2026?
Business · Vol $149.33
Market Description
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 "No IPO by December 31, 2026". 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. In the event that the relevant figure is not displayed, another reliable source will be used. In the event of an interruption in the course of the normal trading session on OpenAI’s first day of trading (e.g., a circuit breaker or half-day), the market will resolve according to the official closing price of the abbreviated session. If no such official closing price is published, the market will resolve according to the next trading day on which an official closing price is published, treating that as the first day of trading for purposes of this market.
Why this category?
confidence: highCategory
Source
Matched term
ipo Reason
IPO markets are Business / corporate-finance events.
Categories come from a deterministic engine: manual overrides (highest priority) → sports hard markers → event-tag rules → keyword rules → Gamma category hint → default. The engine is versioned in category-overrides.ts; methodology lives at /methodology.
FAQ — questions readers actually ask
What is the current Polymarket probability for "Will OpenAI’s market cap be between $1.25T and $1.5T at market close on IPO day?"?
As of Mon, 18 May 2026 07:11:58 GMT, YES is priced at 4% implied probability on Polymarket. The price changed +0.1pp in the last 24 hours, +0.0pp in the last hour, and +0.3pp in the last 7 days.
When does this market resolve?
This market resolves by Jun 30, 2026 (2026-06-30T00:00:00.000Z). Resolution is determined from the market description on Polymarket.
What source determines the outcome?
Resolution is sourced from the market description on Polymarket. Polymarket's UMA optimistic oracle is the final settlement layer; if the published source is ambiguous, UMA tokenholders adjudicate. Source-extraction confidence is shown in the Resolution & Risk block above.
How much is being traded on this market?
$10.00 of trading volume in the last 24 hours. Lifetime volume on Polymarket: $496.5K. Open liquidity in the YES/NO orderbooks: $4.6K. Spread between best bid and best ask: 1.0¢.
Is this a trade recommendation?
No. Orrery describes — never predicts. Every signal on this market carries explicit Evidence, Backtest, and Action tiers. The Action is always one of: Watch only, Inspect timeline, Create alert, Verify source, or Ignore — never Buy or Sell. The probability above is the market's collective implied probability, not a forecast Orrery is publishing.
How fresh is this data and where does it come from?
This page revalidates from the public Polymarket APIs every 30 seconds. Probability and 24h-change come from Gamma; the chart series comes from the CLOB orderbook history; trade and holder data come from the Data API. The fetched-at timestamp on each block tells you exactly how old the underlying upstream pull was.
Alerts
In-app banners fire as soon as a rule is satisfied. Email digests are wired to a server-side cron and continue while your tabs are closed. Telegram and Discord are planned — every existing rule will keep working as channels light up.
Top Holders
20 wallets- Educated-Runway2.4K
- 0x22e4…ef1c2.1K
- Junior-Zebrafish2.1K
- Webbed-Edible1.7K
- Ample-Instance1.6K