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Techcloses in 9mo

What will OpenAI's IPO valuation be?

This market will resolve according to the implied equity valuation of OpenAI at its initial public offering (IPO) price. The IPO valuation is defined as the final IPO price per share multiplied by the total number of shares outstanding on a fully diluted basis, as disclosed in the final prospectus filed with the U.S.…

As of 21 September 2026, "$2.5T+" leads at 15% implied probability (+0.5pp over the last 24h). The biggest 24h move is "$2.0T–$2.25T", from 90% to 93%. The event has traded $185.6K in total ($6.6K in the last 24h) with $44.9K of liquidity across 8 markets. Trading is due to close on 1 July 2027.

24h volume
$6.6K
Total volume
$185.6K
Liquidity
$44.9K
Markets
8
1 Jul 2027
FinanceIPOchatgptBig TechIPOssam altmanOpenAI IPOrewards 100, 4.5, 100 DeprecOpenAI

Chart, demo trading & order book

Market$2.5T+
Yes14.8¢
24h Chg+0.5pp
Mkt Vol$59.2K
live
Order bookYes
Market tradeslive · 6s
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Holders and activity

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Markets and probabilities

8 markets
How to read

The percentage is the implied probability of the outcome, between 0% and 100%. For mutually-exclusive markets the sum trends to 100% (no vig). The ▲/▼ arrow shows the change over the selected window (1h/24h/7d/30d) in percentage points (pp). Click a market to see its top holders (with average entry price and position change) and the latest trades.

What will OpenAI's IPO valuation be? — Polymarket implied odds · Polytracker