SpaceX is not a rocket company. It never was.
Five years ago, buying a space stock meant buying Boeing or Lockheed Martin and hoping the Pentagon kept spending. Not anymore. SpaceX just filed the largest IPO in history at a $1.75 trillion valuation, listing on Nasdaq under ticker $SPCX this Thursday. Most investors are asking whether they can buy it. The real question is what they are actually buying, because the answer is not what the rocket footage suggests.
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Most investors see the rocket launch, hear “largest IPO in history,” and assume this is a story about space. It is not. SpaceX generated $18.7 billion in revenue in 2025, and roughly 61% of that came from Starlink, a satellite internet subscription business that is growing like a software company, not an aerospace contractor. The launch business is real and dominant, but it exists largely to deploy more Starlink satellites and reduce the cost of doing so. The xAI segment, folded in via a February 2026 merger, adds a third leg built around Grok, X, and Colossus, the AI supercomputer, and is currently burning capital at a rate that has turned a profitable core business into a company reporting a $4.9 billion net loss.
What investors are being asked to price on Thursday is a rocket company that is also a telecom company, an AI lab, and a social network, all controlled by a single founder with more than 82% voting power, per the S-1 filing with the SEC. That is either the most compelling conglomerate thesis in market history, or the most expensive leap of faith ever priced in a public offering. The answer depends almost entirely on which of the three segments you believe in, and how much governance risk you are willing to absorb.
🚀 Three businesses, one ticker
The S-1 prospectus, filed publicly on May 20, 2026, reveals a company that is structurally very different from what the Falcon 9 footage implies. SpaceX reports across three segments, each with distinct economics and a distinct reason to exist.
The Space segment covers rocket launches for outside customers, NASA cargo and crew missions, national security launches for the US Space Force and National Reconnaissance Office, and Starship development. It generated approximately $4.1 billion in revenue in 2025, up around 8% year-over-year, per the S-1 and independent analysis from Sacra. The growth is slow because the launch cadence is already at capacity serving internal Starlink deployments, and the commercial market is a subset of total launches. SpaceX flew approximately 170 orbital launches in 2025, capturing roughly 82% of the global commercial launch market share, per public industry estimates. The Space segment ran at an operating loss in 2025, with roughly $3 billion in R&D spend on Starship development dragging profitability down despite the revenue.
The Connectivity segment is Starlink, and Starlink is the entire investment thesis in compressed form. Revenue grew approximately 50% year-over-year to $11.4 billion in 2025, while operating income reached roughly $4.4 billion, implying an operating margin approaching 39%, per analysis from Tom Tunguz. Subscribers grew from 4.4 million in 2024 to 8.9 million by end-2025, and reached 10.3 million across 164 countries by the end of March 2026, per the S-1. Once the satellite constellation is built, every new subscriber adds revenue at near-zero marginal cost. That is software economics delivered over hardware infrastructure, and it is what makes Starlink genuinely unusual among any category of infrastructure business.
The AI segment includes xAI, Grok, X (formerly Twitter), Colossus, and SpaceX’s nascent orbital data centre ambitions. It generated approximately $3.2 billion in revenue in 2025 but ran a roughly $6.35 billion operating loss, per the S-1 and supporting analysis. Starlink’s profits are, functionally, subsidising xAI’s losses at scale. The merger was completed in February 2026 as an all-stock deal at a combined valuation of roughly $1.25 trillion, per Reuters. Before the merger, sources familiar with SpaceX’s pre-merger financials indicated the legacy rocket-and-satellite business was generating around $8 billion in annual profit. Post-consolidation, that profitable business now reports a $4.9 billion GAAP net loss.
🛰 Why Starlink is the actual story
Starlink is worth spending time on because it is the segment that makes or breaks the investment case at this valuation.
The subscriber trajectory is nearly without precedent in consumer internet history. From 2.3 million subscribers in 2023 to 4.4 million in 2024 to 8.9 million by the end of 2025, the business essentially doubled its customer base in a single year. Roughly 97% compound annual growth over three years is a number that would be extraordinary for a software startup. For a satellite network that required launching around 9,600 satellites to build, it is genuinely remarkable, per the S-1.
The unit economics improve as the constellation matures. Revenue grew 50% year-over-year in 2025, while operating income grew 120% and adjusted EBITDA grew 86%, per public reporting. That operating leverage, more revenue per dollar of incremental cost as the satellite network reaches global coverage, is the structural argument for why Starlink is not just a high-growth business but a compounding one.
The addressable market is large and real. Starlink is the dominant provider of broadband in areas where fibre and cable cannot reach, covering remote geographies, maritime routes, aviation cabins, and, increasingly, mobile direct-to-device connectivity as the constellation expands. SpaceX has FCC approval and active partnerships with T-Mobile in the US for direct-to-cell coverage. In India specifically, Starlink received approval from the Department of Telecommunications in early 2025 and has since launched consumer broadband services, making it one of the few global internet infrastructure businesses with an explicit Indian growth vector at a moment when Indian internet penetration continues to expand.
The average revenue per user has been declining, from approximately $99 per subscriber per month in 2023 to roughly $66 by the end of March 2026, per the S-1. This reflects deliberate volume pricing in international markets. Notably, in May 2026, SpaceX raised plan prices by up to $10 per month, per Sacra, signalling a shift toward monetising the installed base now that subscriber scale has been achieved. That pricing move, if it does not trigger material churn, would be a meaningful inflexion in the revenue trajectory.
Rocket economics, separate from Starlink, are also genuinely interesting. SpaceX holds approximately $22 billion in cumulative US government contracts, including National Security Space Launch Phase 3 awards worth up to $5.9 billion across 28 missions through 2032, per Fed-Spend analysis. The company won all NSSL Phase 3 Lane 1 task orders through May 2026, a sweep that leaves competitors, including ULA and Blue Origin, with zero awards in that category, per public reporting. Reusability is the reason: Falcon 9 boosters have flown up to 28 times, compressing launch costs in ways that vertically integrated competitors have been unable to match.
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