PolymarketEconomyTrading

Will OpenAI not IPO by December 31, 2027?

Part of OpenAI IPO Closing Market Cap
Yes price
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read on the next check
24h volume
—
dollars traded
Ends
Jan 1, 2028
Recorded changes
0
tracked since Oct 31

Yes price and rules edits

Price history from Polymarket's public API. Each numbered marker is an edit; point at it to read it.
Yes price

Resolution

Trading
Ends Jan 1, 2028
Ended
Waiting for a proposal
Proposed
2 h to dispute on UMA
Resolved
Paid out

Checking the live resolution stage with Polymarket…

Rules history

removedadded
  1. 1
    Version 1, currentsince I first saw it,
    Read the current rules
    Question
    Will OpenAI not IPO by December 31, 2027?
    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, 2027, 11:59 PM ET, the market will resolve to "No IPO by December 31, 2027".

    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.

    End date
    Jan 1, 2028, 04:59 UTC
  2. 1
    First recordedOct 31, 2026, 09:06 UTC

    Saved in my first snapshot of every open market. Neither venue keeps older versions, so nothing before this exists.

Clarifications posted elsewhere

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