SpaceX Has Filed Confidentially for Its IPO — Space Stocks Rally as the Most Valuable Private Company Eyes a Public Listing

Reuters reported on March 25, 2026 that SpaceX — the private rocket and satellite internet company founded by Elon Musk and valued at approximately $350 billion in secondary market transactions — has filed a confidential S-1 registration statement with the U.S. Securities and Exchange Commission, a procedural step that typically precedes a formal initial public offering by three to six months. A confidential S-1 filing allows a company to submit its prospectus and financial history for SEC review without making the contents public until shortly before the IPO roadshow begins. The news triggered an immediate rally in space-related stocks and ETFs, with investors interpreting the filing as confirmation that a listing is now a formal near-term objective rather than a long-term aspiration. SpaceX was most recently valued at approximately $350 billion in a tender offer completed in December 2025, making it the most highly valued private company in the world at the time of the filing. The company’s primary business lines are its Falcon 9 and Falcon Heavy orbital launch vehicles — which currently dominate the global commercial launch market — and Starlink, the low-Earth orbit satellite internet constellation that has grown to over 7,000 operational satellites and serves more than 5 million subscribers globally, generating multi-billion dollar annual revenue. An IPO would provide SpaceX with access to public equity markets for capital raises, would create a liquid market for early employees and investors to realise their holdings, and would require the company to publish quarterly financial disclosures — giving the investment community its first official view of Starlink’s revenues, operating margins, and growth trajectory. Elon Musk has historically resisted taking SpaceX public, arguing that the pressures of quarterly public company reporting were incompatible with the long-horizon goals of building reusable spacecraft and interplanetary transportation. The S-1 filing suggests that calculus has changed.