OpenAI’s dominant 93.8% market-implied odds reflect its position as one of the highest-valued private AI companies following the $122 billion Series C round that closed at an $852 billion post-money valuation in March 2026, plus secondary market prints and a pending round targeting $1.25 trillion. Strong ChatGPT revenue growth, large-scale model releases, and investor demand from UAE-led groups have reinforced trader consensus that OpenAI will rank second among remaining private firms once SpaceX’s June IPO removed the prior leader. A delayed or downsized closing on the current round, or a larger-than-expected round from Anthropic, could still shift the outcome before month-end resolution.