OpenAI’s dominant 98.9% market-implied probability of ranking as the third-largest private company by end-June stems from its March 2026 $122 billion funding round that established an $852 billion post-money valuation alongside $25 billion in annualized revenue, outpacing peers such as Stripe ($159 billion) and Databricks ($134 billion). With SpaceX having completed its June 12 IPO and exited private status, OpenAI’s recent capital raise and revenue trajectory anchor trader consensus on its relative standing among remaining private firms. The narrow 12-day window to resolution limits scope for material shifts, though a surprise late-June tender offer, regulatory filing, or revised valuation multiple on a rival could theoretically alter the ranking before month-end.