Live Odds · Updated October 24, 2026

How much will OpenAI raise in its IPO?

As of October 24, 2026, 08:18 PM ET, Polymarket traders price $90B–$100B at 43.0% in How much will OpenAI raise in its IPO? — $11.2K traded so far.

Last updated October 24, 2026, 08:08 PM ET with live prices from Polymarket. 24h volume: $0.
Leading outcome
$90B–$100B
43%
A 43.0% price implies roughly a 43-in-100 chance, set by traders risking real money.
24H −0.1 pts7D +1.9 pts30D +40.2 pts
$90B–$100B43.0%
<$30B39.1%
Bid
0¢
Ask
86¢
Spread
86¢
Trade on Polymarket →
Range since May 21, 2026: 1.1% – 48.0% · Opened at 48.0%

Market facts

Event data
Event
How much will OpenAI raise in its IPO?
Category
Finance, IPO, Big Tech, sam altman, IPOs, OpenAI IPO, rewards 100, 4.5, 100 Deprec, OpenAI
Scheduled end
December 31, 2027, 11:59 PM ET
Total volume
$11.2K
Volume (24h)
$0
Liquidity
$8.5K
Markets
9
Leading outcome
$90B–$100B — 43.0%

What is the current price?

Momentum & history

The leading outcome, $90B–$100B, is priced at 43.0%.

Price changes for the leading market — 24 hours: -0.1 pts; past week: +1.9 pts; past month: +40.2 pts.

Since May 21, 2026, $90B–$100B has traded between 1.1% and 48.0%. It opened at 48.0% and last traded at 43.1%.

DayClose
Oct 16, 202641.2%
Oct 17, 202641.5%
Oct 18, 202640.5%
Oct 19, 202641.5%
Oct 20, 202642.2%
Oct 22, 202641.9%
Oct 23, 202643.1%

Who is favored to win?

Outcomes

$90B–$100B is favored at 43.0%.

OutcomePriceImplied probability24h changeVolumeVolume share
$90B–$100B43¢43.0%-0.1 pts$7486.7%
<$30B39¢39.1%+4.4 pts$9868.8%
$40B–$50B12¢11.8%-3.9 pts$1.9K16.7%
$80B–$90B11¢10.5%+0.1 pts$7036.3%
$100B+10¢10.5%—$3.3K29.1%
$70B–$80B6¢5.5%-0.1 pts$6956.2%
$60B–$70B4¢4.5%—$7566.7%
$30B–$40B4¢4.1%—$6696.0%
$50B–$60B3¢3.0%—$1.5K13.6%

See the full live book for this market on Polymarket

The leading market's spread is 86¢ (bid 0¢ / ask 86¢) — a tighter spread means cheaper round-trip trading.

How much has been traded?

Volume

$11.2K has been traded on this event in total, $0 of it in the last 24 hours, across 9 markets.

When does this market resolve?

Rules

This market is scheduled to end December 31, 2027, 11:59 PM ET.

This market will resolve according to the total gross proceeds raised by OpenAI in its initial public offering (IPO) at the time of pricing. The amount raised is defined as the aggregate dollar value of shares sold at the final offering price at the time of IPO pricing, as disclosed in the final prospectus filed with the U.S. Securities and Exchange Commission. Shares sold pursuant to any overallotment option (greenshoe) will not be considered. Secondary sales of existing shares by current shareholders will be included only to the extent that they are part of the IPO offering at pricing and reflected in the total gross proceeds. Private secondary transactions conducted outside of the IPO will not be considered. If the total proceeds fall exactly on a boundary between two ranges, this market will resolve to the higher range. If OpenAI does not complete an IPO by December 31, 2027, 11:59 PM ET, this market will resolve to the lowest bracket. The primary resolution source will be the final prospectus filed with the SEC; however, a consensus of credible reporting may also be used.

What do the biggest traders hold?

Top holders

The largest current holder of the leading market holds 498 shares of No.

HolderOutcome heldSharesValue at current price
0xa5ef39c3…No498$284
Belated-GlueYes274$118
Evil-RowYes74$32
Small-Fellow-MandolinYes72$31
0x56a89027…Yes30$13
Automatic-CappuccinoYes20$9
Genuine-TribeYes16$7
Deficient-OutrunYes5$2
Blind-LeafYes5$2
Tepid-MonopolyYes3$1

What are the latest trades?

Tape
BUY No — $350 at 80.6%SELL Yes — $294 at 49.0%BUY No — $188 at 94.7%
TimeOutcomeSidePriceSize
Oct 16, 12:35 AM ETNoBUY73.0%$5
Oct 16, 12:35 AM ETNoBUY69.0%$10
Oct 16, 12:35 AM ETNoBUY94.7%$170
Oct 16, 12:35 AM ETNoBUY72.0%$143
Oct 16, 12:35 AM ETYesBUY32.9%$3
Oct 16, 12:35 AM ETNoBUY69.0%$6
Oct 16, 12:35 AM ETNoBUY69.0%$137
Oct 16, 12:35 AM ETNoBUY94.7%$188
Sep 27, 04:10 AM ETYesSELL17.0%$4
Sep 26, 06:44 PM ETYesSELL30.0%$28

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Frequently asked questions

FAQ

What are the odds of How much will OpenAI raise in its IPO??

As of October 24, 2026, 08:08 PM ET, the leading outcome is $90B–$100B at 43.0%. Next is <$30B at 39.1%. See the live book on Polymarket: https://polymarket.com/event/how-much-will-openai-raise-in-its-ipo?via=bro

How much money has been traded on How much will OpenAI raise in its IPO??

$11.2K in total volume, with $0 traded in the last 24 hours across 9 markets.

When does How much will OpenAI raise in its IPO? end?

The market is scheduled to end December 31, 2027, 11:59 PM ET.

What is the most likely outcome of How much will OpenAI raise in its IPO?, according to Polymarket traders?

$90B–$100B, priced at 43.0% as of October 24, 2026, 08:08 PM ET. Prices are implied probabilities backed by real-money trading.

Browse the live odds index, today's biggest movers, and Whale Watch for the largest positions.

⚠️ Not financial advice: odds swing hard on news. Never bet money you can't afford to lose, and always read a market's resolution rules before trading.

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