SpaceX Hits $1.25T Valuation After xAI Merger, Overtakes OpenAI as World's Most Valuable Private Company

SpaceX-xAI Merger Creates $1.25 Trillion Private Market Giant The global unicorn landscape has been reshaped at the top as Elon Musk's SpaceX has officially surpassed OpenAI to claim the title of world's most valuable private company, reaching a staggering $1.25 trillion valuation following its landmark merger with xAI. The deal marks an unprecedented moment in private market history — no privately held company has previously reached this valuation threshold. AI Unicorns Dominate the Top Tier OpenAI holds the second position at $840 billion after closing the largest single investment ever made in a private company: a $110 billion round backed by Nvidia, SoftBank, and Amazon. Anthropic, the AI safety startup, has reached a $380 billion valuation, while Databricks sits at $134 billion amid speculation about a potential 2026 IPO. SpaceX (+ xAI): $1.25 trillion OpenAI: $840 billion ByteDance: $480 billion Anthropic: $380 billion Stripe: $159 billion Databricks: $134 billion Secondary Market Implications These valuations are increasingly being stress-tested in the secondary market, where tender offers and structured liquidity programs have become the primary price discovery mechanism for late-stage private shares. Buyers are paying close attention to the spread between primary round valuations and secondary clearing prices, which in many cases trade at a 10–20% discount to the most recent primary round. Why This Matters for Private Markets The trillion-dollar private company is no longer hypothetical — it is a reality that forces LPs, GPs, and secondaries buyers to recalibrate their valuation frameworks. As these mega-cap private companies approach IPO consideration, secondary market participants who established positions at earlier valuations face both significant upside potential and liquidity timing risk. The SpaceX-xAI benchmark sets a new ceiling for private market pricing and will influence how similar AI infrastructure and deep tech companies are valued in secondary transactions for the remainder of 2026.