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Updated 4 wk. ago

Will OpenAI’s market cap be less than $500B at market close on IPO day?
1 %
chance
Market brief
- Last 50 trades: 21 buys, 29 sells; the largest was $211 (sell). Too few trades of $5K+ for a big-money read.
- Historically, 2% of Polymarket Tech markets priced 0–5% seven days before the end resolved YES (139 cases).
- Scheduled to end in 2 mo. (Jan 1, 2027).
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OpenAI IPO Closing Market Cap
7 outcomesTotal volume
$323.7K
24h vol.
$1.01
1w vol.
$111.48
1m vol.
$4.9K
Liquidity
$59.1K
Bid / Ask
1¢ / 1¢
Spread 1¢
Last trade
1¢
Start date
Sep 23, 2025
End date
Jan 1, 2027
ends in 2 mo.
How reliable is this price range?
Of 139 resolved Polymarket Tech markets priced 0–5% seven days before resolution, 2.2% resolved YES. Their average price was 1.0%. In this range the price has been a reliable guide.
A historical frequency for the price range, not a probability for this market and not advice. How we measure this
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- Full AI research reportProA cited research report on demand: probability, bull and bear case, key facts with sources.
- Your forecasts, scoredProSave your call on this market and see it scored against the result.
Order book and recent tradesDepth, spread and up to 50 recent trades
Orderbook
Spread: 0¢Snapshot from cache
Recent trades (50)
| Time | Side | Price | Size |
|---|---|---|---|
| 4 wk. ago | Sell | 0¢ | 4,139 |
| 4 wk. ago | Buy | 0¢ | 159 |
| 4 wk. ago | Buy | 0¢ | 100 |
| 4 wk. ago | Buy | 0¢ | 500 |
| 4 wk. ago | Buy | 0¢ | 500 |
| 4 wk. ago | Buy | 0¢ | 500 |
| 4 wk. ago | Buy | 0¢ | 500 |
| 4 wk. ago | Buy | 0¢ | 500 |
| 4 wk. ago | Buy | 1¢ | 1,232 |
| 4 wk. ago | Buy | 1¢ | 143 |
| 4 wk. ago | Sell | 99¢ | 5 |
| 4 wk. ago | Sell | 98¢ | 4 |
| 4 wk. ago | Sell | 2¢ | 4 |
| 4 wk. ago | Sell | 99¢ | 6 |
| 4 wk. ago | Sell | 1¢ | 6 |
| 1 mo. ago | Sell | 99¢ | 5 |
| 1 mo. ago | Buy | 99¢ | 5 |
| 1 mo. ago | Buy | 99¢ | 168 |
| 1 mo. ago | Buy | 1¢ | 160 |
| 1 mo. ago | Buy | 1¢ | 8 |
| 1 mo. ago | Sell | 1¢ | 1,095 |
| 1 mo. ago | Buy | 1¢ | 1,095 |
| 1 mo. ago | Sell | 1¢ | 626 |
| 1 mo. ago | Buy | 1¢ | 100 |
| 1 mo. ago | Buy | 1¢ | 100 |
| 1 mo. ago | Buy | 1¢ | 426 |
| 1 mo. ago | Sell | 1¢ | 10 |
| 1 mo. ago | Sell | 99¢ | 10 |
| 1 mo. ago | Sell | 99¢ | 11 |
| 1 mo. ago | Sell | 1¢ | 11 |
| 1 mo. ago | Sell | 99¢ | 9 |
| 1 mo. ago | Sell | 1¢ | 4 |
| 1 mo. ago | Buy | 99¢ | 5 |
| 1 mo. ago | Sell | 99¢ | 213 |
| 1 mo. ago | Sell | 1¢ | 99 |
| 1 mo. ago | Sell | 1¢ | 40 |
| 1 mo. ago | Sell | 1¢ | 64 |
| 1 mo. ago | Buy | 99¢ | 10 |
| 1 mo. ago | Sell | 99¢ | 18 |
| 1 mo. ago | Sell | 1¢ | 18 |
| 1 mo. ago | Sell | 1¢ | 50 |
| 1 mo. ago | Buy | 1¢ | 40 |
| 1 mo. ago | Sell | 99¢ | 10 |
| 1 mo. ago | Sell | 99¢ | 15 |
| 1 mo. ago | Sell | 1¢ | 15 |
| 1 mo. ago | Sell | 1¢ | 7 |
| 1 mo. ago | Sell | 99¢ | 7 |
| 1 mo. ago | Sell | 99¢ | 20 |
| 1 mo. ago | Sell | 1¢ | 10 |
| 1 mo. ago | Buy | 99¢ | 10 |
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