SpaceX Surpasses $1.25T to Become World's Most Valuable Unicorn After xAI Merger

SpaceX Becomes History's Most Valuable Private Company Data compiled by BestBrokers from Crunchbase, PitchBook, and other sources confirms SpaceX as the most valuable private company ever recorded, reaching a $1.25 trillion valuation following its completed merger with xAI, Elon Musk's artificial intelligence venture. The combined entity spans space infrastructure, satellite internet via Starlink, and generative AI — a diversification that analysts say justifies a valuation premium well above any previous private-market benchmark. The Unicorn Leaderboard — March 2026 SpaceX — $1.25 trillion (US, Aerospace & AI) OpenAI — $840 billion (US, AI) ByteDance — $480 billion (China, Media & Tech) Anthropic — $380 billion (US, AI) Stripe — $159 billion (US, Fintech) Databricks — $134 billion (US, AI/Data) IPO Pipeline and Secondary Market Implications Bloomberg reports that SpaceX has filed confidentially with the SEC at a target valuation of approximately $1.75 trillion — above its current secondary market price — signaling that management expects significant upside post-listing. Meanwhile, pre-IPO secondary transactions in SpaceX shares have reportedly intensified, with Bloomberg noting a proliferation of structured deals offering investors indirect exposure through special purpose vehicles. These deals vary widely in terms, fees, and investor protections, creating material due-diligence risk for buyers. OpenAI's $840 billion mark reflects the largest single private investment in history — a $110 billion round anchored by Nvidia, SoftBank, and Amazon. Secondary buyers pricing OpenAI positions now face a compressed entry point relative to the just 12 months ago, when the company traded closer to $300 billion. Why This Matters for Private Markets With over $3 trillion in combined market cap potentially hitting public exchanges in 2026 across SpaceX/xAI, OpenAI, Anthropic, Stripe, and Databricks, secondary market participants face a pivotal pricing decision. Early secondary buyers at lower valuations stand to benefit substantially from IPO-driven price discovery. However, buyers entering today at peak private valuations may find limited upside if public market reception is mixed — a recurring pattern in historical IPO classes. Disciplined underwriting and careful SPV structure review remain critical for anyone acquiring exposure through secondary channels.