SpaceX filed its S-1 after 24 years private. The numbers confirm what the filings reveal: this is not a rocket company. It is a three-segment conglomerate generating $18.7 billion in 2025 revenue across Space ($4.1B, -16% operating margin), Starlink ($11.4B, +39% operating margin), and an AI segment built around xAI and the X platform ($3.2B, -199% operating margin, $12.7B in capital expenditure).
Starlink is the engine. It grew from 2.3 million subscribers in 2023 to 8.9 million in 2025, a 97% CAGR, and now covers 164 countries with 9,600 satellites representing 75% of all active maneuverable satellites in orbit. Revenue grew 50% year-over-year while operating income grew 120%, the classic fixed-cost leverage of a constellation that adds each new subscriber at near-zero marginal cost. That $4.4 billion in Starlink operating income is subsidizing two loss-making segments, including an AI division burning $6.4 billion to build COLOSSUS data centers and train Grok.
The full filing is worth reading for the segment accounting alone. The AI segment, consolidated after the xAI merger closed in February 2026, sits inside a launch company with 80% of global mass-to-orbit share and a Falcon 9 booster that has reflown 34 times at $67 million per launch. The open question the S-1 raises but does not answer: what does Starship's projected 100 metric ton payload capacity do to these economics when commercial deliveries begin in the second half of 2026.
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