Will OpenAI’s market cap be between $500B and $750B at market close on IPO day?

Will OpenAI’s market cap be between $500B and $750B at market close on IPO day? It is currently trading at a 1% probability on Polymarket. Reported volume is $167.8K. Scheduled resolution: December 31, 2026.

Last updated September 1, 2026 at 12:10 AM ET

Current Market Probability

Probability	Price	Volume	Liquidity	Platform	Status	Resolution date	Chart
1%	0.01	$167.8K	$35.6K	Polymarket	Open	January 01, 2027

Market Information

Historical Market Probability

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