Polymarket odds for the prediction market question on whether OpenAI’s valuation will reach $975 billion by September 30 rose to 63%, up 30% over the past 24 hours. According to ChainCatcher, the contract settles “Yes” if OpenAI’s private market valuation published on Nasdaq Private Market reaches or exceeds $975 billion by September 30, 2026, and may also reference IPO or direct listing pricing and post-listing public market capitalization if the company goes public during the period. Nasdaq Private Market’s later revisions to historical data are generally not counted unless they correct obvious errors.