History was made on Wall Street Friday morning. SpaceX (Nasdaq: SPCX) began trading on the Nasdaq at $150 per share — 11% above its $135 IPO price — in the largest public market debut in history. Shares immediately surged to an intraday high of $168.40, pushing the company’s market capitalization above $2 trillion and lifting Elon Musk’s net worth to an estimated $1.3 trillion or more, making him the first person in human history to achieve trillionaire status on paper.
The milestone is as much a reflection of what SpaceX has built over 24 years as it is of the scale of investor demand that greeted the stock on its first day of public trading.
The Numbers Behind the Debut
The SpaceX IPO officially priced at $135 per share Thursday evening, raising approximately $75 billion — the largest capital raise in IPO history — and assigning the company a market capitalization of $1.77 trillion from day one. The offering was oversubscribed four times, meaning institutional investors who wanted allocations did not receive them and are now buying shares in the open market, providing additional upward price support on the first trading day.
The demand dynamic is amplified by an unusually small public float. Only approximately 4% of SpaceX shares are available for public trading, with early investors, employees, and insiders holding the remaining 96% subject to lock-up restrictions. That combination of overwhelming institutional demand against a tiny available float is the primary mechanical driver of today’s opening price action.
The IPO is also one of the largest single wealth creation events in venture capital history. Founders Fund, which invested $600 million in SpaceX and holds approximately a 3% stake, is sitting on estimated returns of more than $50 billion at the $135 IPO price. Andreessen Horowitz’s stake is valued at more than $10 billion. Sequoia’s position is worth over $20 billion. Approximately 4,400 current and former SpaceX employees are expected to become millionaires as a result of the listing, with roughly 400 reaching centimillionaire status.
The Index Inclusion Catalyst Is Days Away
One of the most consequential structural factors supporting SPCX in the near term is not investor enthusiasm — it is mandatory index buying. SpaceX successfully lobbied multiple major indexes, including the Nasdaq-100, to change their inclusion eligibility rules ahead of the IPO. Under the revised Fast Entry rule that took effect May 1, SpaceX will join those indexes in a matter of days rather than the months the prior process would have required. Once included, every ETF and passive fund benchmarked to those indexes will be required to purchase SPCX at whatever price the market sets — creating a structural buyer with no price sensitivity arriving imminently.
What Is Happening to Smaller Space Stocks Today
While SPCX trades sharply higher, virtually every small and microcap space company that had been rallying in anticipation of today’s debut is selling off hard in the same session. York Space Systems is down more than 16%. Firefly Aerospace has fallen over 16%. EchoStar is off nearly 15%. Voyager Technologies is down more than 13%. AST SpaceMobile has declined more than 12%.
The pattern is a textbook “sell the news” rotation. Investors who accumulated positions in smaller space names as proxies for SpaceX IPO excitement are now rotating directly into SPCX. Capital that had been parked in accessible small cap space vehicles while SpaceX remained private is moving into the real thing now that it is publicly available.
The Question That Matters Going Forward
The more important question for investors in smaller space companies is not what happens today. It is what happens over the next six to eighteen months as SpaceX operates as a public company with $75 billion in fresh capital and a publicly traded stock as acquisition currency. The company’s vertical integration across launch, satellite connectivity, AI, and lunar operations means it competes with or could potentially acquire virtually every other company in the space technology sector.
For some smaller names, a well-capitalized public SpaceX validates and accelerates the sector’s commercial development. For others, it is a better-funded competitor now operating with full public transparency. The index buying wave arriving in the coming days will be the next major price catalyst to watch — both for SPCX and for the smaller companies trading in its orbit.
Elon Musk gave SpaceX less than a 10% chance of success when he founded it in 2002. On Friday June 12, 2026, the market assigned it a $2 trillion valuation. The 24-year wait is over.