SpaceX Files Confidentially for IPO at $1.75 Trillion Valuation — The Biggest Offering in History
SpaceX submitted a confidential draft S-1 registration to the SEC on April 1, targeting a June 2026 public listing at a $1.75 trillion valuation and a $75 billion capital raise — more than three times the largest US IPO on record. The offering would come as SpaceX's xAI merger adds AI infrastructure to its launch and satellite business, setting up the first mega-IPO in a year expected to include OpenAI and Anthropic.
On April 1, 2026, SpaceX submitted a confidential draft registration statement to the Securities and Exchange Commission — the first formal step toward what could be the largest initial public offering in the history of capital markets. The company is targeting a June listing at a valuation of approximately $1.75 trillion and a capital raise of up to $75 billion.
To appreciate what those numbers represent: Alibaba’s 2014 IPO raised $25 billion, the current US record. Saudi Aramco’s 2019 offering — the largest IPO globally — raised $25.6 billion. SpaceX’s target of $75 billion in a single offering would be more than three times larger than any US IPO ever completed.
The confidential filing triggers a 15-day SEC review window before public disclosure is required, meaning the full S-1 registration statement could be made public as early as mid-April 2026.
What SpaceX Is Today
SpaceX is no longer purely a rocket company, and the IPO prospectus will tell a story that goes well beyond launch services.
The company’s Starlink satellite internet service has become one of the fastest-growing telecommunications businesses in history, with active subscribers in over 100 countries. Starlink revenue has been growing at triple-digit annual rates and is now the largest revenue source in the SpaceX portfolio — larger than launch contracts, including NASA and Department of Defense awards.
Starship, SpaceX’s fully reusable super-heavy launch vehicle, completed multiple successful orbital test flights in 2025 and is now the primary vehicle for NASA’s Artemis lunar program. If Starship’s development continues on its current trajectory, it fundamentally changes the economics of putting mass into orbit: launch costs per kilogram to low Earth orbit could fall by an order of magnitude from current Falcon 9 pricing.
The xAI component adds a third leg to the business. Elon Musk’s AI company, previously valued independently at $20 billion, was folded into SpaceX in a merger completed in Q1 2026. xAI brings Grok (the AI assistant and API), significant GPU compute infrastructure, and a team of frontier AI researchers — positioning SpaceX as a participant in the AI infrastructure build-out, not just a passive beneficiary of satellite bandwidth demand.
The Valuation Math
A $1.75 trillion valuation requires justification across three distinct businesses:
Starlink is the clearest comp. Comparing to T-Mobile (market cap approximately $250B), Verizon ($170B), and AT&T ($170B), a global satellite internet business with lower infrastructure costs per subscriber than terrestrial carriers, operating in markets those carriers cannot reach, and growing at significantly faster rates, commands a meaningful premium. Analysts at Morgan Stanley and Goldman Sachs have valued Starlink alone at between $400B and $600B in recent reports.
SpaceX launch services — including Falcon 9, Falcon Heavy, and emerging Starship commercial capacity — generate high-margin, often sole-source government contracts alongside a growing commercial launch market. As Starship matures, the addressable market for launch expands to include missions currently considered economically infeasible.
xAI brings AI model and API revenue plus the strategic value of Grok’s integration into X (formerly Twitter) and the Starlink ground station network as a potential AI compute edge deployment platform.
The sum-of-parts analysis makes $1.75 trillion defensible, if aggressive. The bull case depends on Starship development proceeding on schedule and xAI establishing durable revenue in a competitive AI market.
Why Now, and Why Before OpenAI
SpaceX’s decision to file ahead of OpenAI — which is also preparing for an IPO — is strategic. The public market’s appetite for “AI infrastructure” companies is currently at historic highs; the Q1 2026 VC market demonstrated that institutions are willing to allocate at extraordinary multiples for exposure to AI-adjacent businesses.
SpaceX offers something OpenAI cannot: physical infrastructure moats. Starlink’s satellite constellation required approximately $10 billion to build and cannot be replicated quickly by any competitor. Starship’s manufacturing infrastructure represents years of iterative development that competitors would need to restart from scratch. These capital-intensive moats create different risk profiles than software AI companies, potentially attracting a different institutional investor base.
Filing before OpenAI also allows SpaceX to set the narrative: if SpaceX successfully raises at $1.75T, it establishes a public market precedent for “AI-era infrastructure company” valuations that OpenAI’s bankers can cite. If OpenAI files first and the valuation faces skepticism, SpaceX might need to revise its numbers downward.
The Public Market Implications
A successful SpaceX IPO at or near its target valuation would have far-reaching implications for the public markets.
At $1.75 trillion, SpaceX would immediately rank among the five most valuable US public companies by market cap. Index funds and passive vehicles tracking S&P 500, Russell, and total market indices would be required to purchase SpaceX shares as a matter of mandate — creating immediate structural demand from the most price-insensitive buyers in the market.
The offering would also test whether the AI-era premium that has driven private valuations can translate into sustainable public market pricing. Private markets can support speculative valuations indefinitely through secondary transactions; public markets require quarterly earnings, analyst coverage, and institutional shareholders who have redemption obligations. The SpaceX IPO will be the first true stress test of whether the current generation of AI-era “infrastructure” valuations hold up under public market scrutiny.
If they do, OpenAI and Anthropic’s own IPO paths become significantly smoother. If they don’t, the repricing could ripple back through the entire private market for AI-related companies.
The SEC review period has begun. The public S-1 is expected in the coming days. Whatever happens next, the SpaceX IPO will be the most watched capital markets event of 2026.