SpaceX's completed June 2026 IPO at a $1.77 trillion valuation, with shares opening near $2.1 trillion market cap, anchors the 69% market-implied odds as the year's largest by capitalization. Its Starlink-driven revenue trajectory near $20 billion annualized and integration of xAI assets underpin trader consensus on scale. Anthropic's 26% odds reflect its planned November listing and Q3 revenue of $16.8 billion, yet recent investor discussions pointing to a $1.5 trillion target—down from earlier $2 trillion expectations—limit upside relative to SpaceX. xAI's 25.5% probability stems from its February acquisition by SpaceX at a $250 billion standalone valuation, folding its AI exposure into the already-public entity. OpenAI's near-zero odds align with its confirmed 2026 deferral, leaving limited swing factors for other candidates amid IPO market selectivity.