SpaceX IPO Valuation Hinges on Starship Proving Operational Readiness

Massive IPO Rides on Rocket Development

SpaceX has officially filed for its long-awaited stock market debut, setting the stage for what could become the largest IPO in Wall Street history and targeting a $1.8 trillion valuation . The astronomical figure makes this potentially the most valuable company ever to go public, with Musk's bonus structure potentially awarding him billions of additional shares if ambitious milestones are met, including establishing "a permanent human colony on Mars with at least one million inhabitants" .

According to the filing, SpaceX generated roughly $18.6 billion to $18.7 billion in revenue in 2025 but posted losses of nearly $5 billion during the same period . At a $1.75 trillion valuation with roughly $25 billion expected 2026 revenue, SpaceX would trade at approximately 70x forward revenue. Even for a high-growth tech company, this is an extreme multiple .

Much of SpaceX's future still depends on Starship, the giant reusable rocket system Musk believes will eventually carry humans to Mars. The filing showed SpaceX spent billions developing the vehicle, including roughly $3 billion on Starship research and development in 2025 alone. SpaceX expects Starship to begin orbital payload deliveries in the second half of 2026 .

Starship Progress Remains Mixed

As of May 27, 2026, the SpaceX Starship has been launched 12 times, with 7 successes and 5 failures . Starship's twelfth test launch was on May 22, 2026, using Ship 39 and Booster 19. This flight was the first test of Version 3 of Starship. The booster lost control and broke apart over the Gulf of Mexico .

Throughout 2026, the company plans at least four to six dedicated Starship integrated flight tests, each building on lessons from previous flights. These missions will focus on in-space propellant transfer, controlled booster landings, and orbital payload deployment techniques . The SpaceX Starship Propellant Transfer Demo is a demonstration of essential capabilities required for refueling a Starship in low-Earth orbit. It is expected to occur in 2026. The ability to refuel a Starship in low orbit is critical for the NASA Artemis program .

Starship is still conducting test flights. It has not yet demonstrated reliable booster catching, high-cadence operations, or consistent orbital refueling . These capabilities remain essential for the vehicle to fulfill its ambitious mission profile.

AI Ambitions Drive Extreme Valuation

One of the biggest surprises in the filing was just how aggressively SpaceX is leaning into artificial intelligence. The company revealed that more than half of its capital spending last year went toward AI infrastructure tied to xAI, Musk's artificial intelligence business behind the Grok chatbot. TechCrunch reported that SpaceX directed around $20 billion toward AI-related spending in 2025 alone .

Goldman Sachs' IPO materials painted an exceptionally bullish picture: ~$474 billion total revenue by 2030, with $322 billion coming from orbital AI compute alone. This would make AI roughly 68% of SpaceX's business . In the extreme bull case, SpaceX aims to deploy up to 1 million such satellites. This would create 80–150 GW of orbital compute capacity — equivalent to dozens of large nuclear power plants, all powered by free solar energy in space .

The filing also showed that Starlink is expected to become even more important in the coming years, with projections suggesting it could generate more than 70% of the company's revenue by 2026. That growth comes as SpaceX pushes deeper into rural broadband markets and international telecom partnerships .

Market Reality Check

The planned $135 per share ($1.75T) appears significantly overvalued unless Starship dramatically exceeds expectations in the next 18–24 months. The current $1.75T target prices in multiple near-miracles occurring simultaneously — particularly Starship scaling from test flights to industrial launch rates within 4–5 years .

Questions remain about how SpaceX is justifying its astronomical valuation. The company's IPO prospectus sees its "total addressable market" reaching as high as $28.5 trillion, just a few trillion short of the U.S. annual GDP . While SpaceX has revolutionized space access through reusable rockets, the gap between current capabilities and the futuristic orbital AI empire outlined in its prospectus remains vast. Investors will ultimately decide whether they're betting on proven rocket technology or Musk's vision of space-based computing dominance.