SpaceX: The Rocket Story Is Proven, but the AI Bet Could Make or Break the Stock
SpaceX may be one of the most important IPO stories of this tech cycle. But for investors, the key question is not whether SpaceX is a great company. The real question is whether the stock can justify the valuation investors may be asked to pay.
Based on the preliminary filing and related summaries, SpaceX is no longer just a rocket company. It is becoming a three-part platform: Starlink connectivity, launch infrastructure, and AI.
The Simple Framework: Proven, Semi-Proven, Unproven
Starlink / Connectivity is the most proven part of the company. It generated about $11.387 billion in 2025 revenue, or roughly 61% of SpaceX’s total revenue. More importantly, it is the core profit engine, with about $7.168 billion in adjusted EBITDA in 2025. This is the part of SpaceX that gives the valuation its hardest financial foundation.
Space / Starship is semi-proven. Falcon 9 has already changed the launch market through reusability, scale, and vertical integration. But Starship is still the bigger swing factor. If Starship reaches high-frequency, low-cost reuse, it could reset the cost curve for satellite deployment, lunar missions, defense payloads, and even future orbital infrastructure. If it disappoints, investors may reprice SpaceX closer to today's Falcon 9 and Starlink economics.
AI is the least proven but potentially the most valuation-expanding segment. It generated about $3.201 billion in 2025 revenue, but also produced a much larger operating loss and consumed heavy capital expenditure. AI can lift SpaceX’s long-term ceiling, but it also extends the payback period for investors.
Starlink: The Most Important Business Today
Starlink has moved beyond the "internet for remote areas" narrative. It is now becoming a global low-earth-orbit communications network.
The reported user growth is strong: about 2.3 million users at the end of 2023, 4.6 million at the end of 2024, 9.2 million at the end of 2025, and roughly 10.3 million by Q1 2026.
But there is one important tension: user growth is rising while ARPU, or average monthly revenue per user, is falling, from about $99 to about $66 in the referenced period.
That is not necessarily bad. It likely means SpaceX is using lower pricing and terminal subsidies to build global scale. The key question is whether higher-value segments can offset consumer ARPU pressure. These include enterprise users, aviation, maritime, government, defense, and direct-to-cell satellite connectivity.
Space and Starship: The Moat Behind the Numbers
The Space segment generated about $4.086 billion in 2025 revenue. On the surface, that is much smaller than Starlink.
The launch business is the infrastructure layer behind the entire company. SpaceX can launch its own Starlink satellites instead of relying fully on third-party launch providers. That is a structural advantage. Falcon 9 reusability lowers cost, supports external launch revenue, and also reduces the internal cost of expanding Starlink.
This is why Starship is so important. Starship is not just a bigger rocket. It is the potential gateway to a new cost curve. If high-frequency full reusability works, SpaceX could deploy more satellites, larger payloads, defense systems, and future orbital infrastructure at lower cost.
But this is also a major risk. If Starship timelines slip, investors may have to discount the more aggressive parts of the story: lunar missions, Mars optionality, orbital data centers, and deep-space infrastructure.
AI: The Biggest Upside, and the Biggest Bill
AI is the most controversial part of the SpaceX IPO story. On the surface, the segment looks like a heavy financial drag.
In 2025, the AI segment generated about $3.201 billion in revenue, but operating losses reached about $6.355 billion. AI-related capex reached about $12.727 billion in 2025. In Q1 2026, the uploaded material notes that AI accounted for about $7.7 billion of roughly $10.1 billion total capex.
But the Anthropic contract changes the framing. According to the provided draft, SpaceX signed a Cloud Services Agreement with Anthropic in May 2026. Anthropic would pay about $1.25 billion per month to use COLOSSUS and COLOSSUS II compute capacity, with the contract running until May 2029.
xAI also brings several strategic assets into the narrative: Grok as the AI interface, X as a real-time data and distribution platform. That gives SpaceX a more vertically integrated AI stack than many standalone AI companies. It potentially has compute, data, distribution, power infrastructure, and applications under one roof.
The prospectus also makes clear why AI matters so much to the IPO narrative. SpaceX estimates a total quantifiable TAM of about $28.5 trillion, with AI contributing roughly $26.5 trillion, or more than 90% of the total. That means AI is not just an add-on business in the filing; it is the biggest part of the long-term valuation story, even though it remains the least proven part of the financial model today.
Terafab and Orbital Compute: Long-Term Options, Not Near-Term Earnings
The filing-related discussion also points to longer-term ambitions such as Terafab and space-based AI data centers. These ideas are powerful, but investors should treat them as long-duration call options rather than near-term earnings drivers.
Terafab would push SpaceX further upstream into compute hardware, chip supply chains, packaging, memory, and manufacturing execution. That could strengthen the company’s vertical integration story, but it also adds complexity. Chip manufacturing has a very different execution cycle from rockets: equipment delivery, yield ramp, process know-how, talent, and customer qualification all take time.
The orbital AI data center concept is even more aggressive. In theory, SpaceX could use low-cost launch, solar power, and Starlink data transmission to support compute infrastructure in orbit. In practice, thermal management, radiation, maintenance, orbital debris, regulation, and economics remain unresolved.
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