SpaceX has unveiled its IPO prospectus, revealing a striking financial dichotomy within its operations. As the company prepares for what could be the largest public offering ever, with a target valuation of $1.75 trillion, the performance of its two primary segments—Starlink and xAI—offers a complex outlook for potential investors.
Starlink: A Cash Cow
Starlink, SpaceX's satellite internet service, has emerged as a significant financial asset, generating $11.39 billion in revenue for 2025—an impressive increase of 50% year-over-year. The service boasts an EBITDA margin of 63%, contributing substantially to the company's operating profit, which reached $4.42 billion. As of March 2026, Starlink has surpassed 10.3 million subscribers globally, showcasing steady growth in a market with ample room for expansion.
However, caution is warranted. Average revenue per user (ARPU) has declined from $99 to $66 over three years, reflecting the challenges of expanding into markets with lower purchasing power. While the subscriber base has grown significantly—4.5 times since 2023—questions remain about the sustainability of this trend as the company prepares to launch its next-generation V3 satellites, which promise enhanced capacity and performance.
xAI: The Burden of Innovation
In stark contrast, xAI, which became part of SpaceX in early 2026, has proven to be a financial burden, reporting a staggering $6.36 billion loss in 2025 alone. This segment's capital expenditures in Q1 2026 reached $7.7 billion, indicating an alarming annualized burn rate that could exceed $30 billion. Investors now face the reality that while Starlink thrives, xAI's future is uncertain, heavily dependent on its contract with Anthropic, which can be terminated with just 90 days' notice.
This precarious financial situation raises critical concerns about SpaceX's ambitious AI plans, which include developing orbital AI computing capabilities. The prospectus reveals that the company has invested heavily in supercomputing infrastructure, but the viability and profitability of these initiatives remain unproven.
Governance and Market Dynamics
The governance structure outlined in the prospectus adds another layer of complexity. Elon Musk retains 85.1% of the voting power through a dual-class share structure, effectively sidelining any potential dissent from retail investors. This control has raised eyebrows among analysts, especially given Musk's extensive personal interests across various ventures, including Tesla.
Concerns have emerged regarding the gap between SpaceX's projected valuation and more conservative estimates. Aswath Damodaran, a noted valuation expert, estimates the company’s worth at approximately $1.22 trillion, significantly below the targeted IPO valuation. This skepticism arises not only from the financials but also from the overarching reliance on Musk's vision and leadership.
Looking Ahead: Key Indicators for Investors
As the IPO approaches, scheduled for mid-June 2026, investors must closely monitor critical indicators. The successful commercialization of the Starship, expected to begin in late 2026, will be key for both Starlink's expansion plans and the future of xAI. The sustainability of Starlink's ARPU and the potential for contract renewals or replacements for xAI’s computing capacity will significantly influence the company’s financial trajectory.
SpaceX's upcoming public offering presents a compelling opportunity, yet it is fraught with uncertainties. Investors are not just buying shares in a company; they are betting on Musk's larger vision of interstellar progress. The stark contrast between Starlink's profitability and xAI's losses will shape the narrative as this historic IPO unfolds, prompting a critical examination of what investors are truly buying into.
