The listing, priced at $135 per share, has drawn more than $250bn of investor demand against $75bn of stock on offer, according to Reuters. Yet the company reported an operating loss of $4.2bn on $18.7bn in revenue last year, according to its registration statement. For UK operators and board members weighing participation, whether through personal portfolios or treasury decisions, the numbers behind each of SpaceX's three reporting segments deserve scrutiny.

What SpaceX's three segments are actually worth

SpaceX's registration statement splits the group into three reporting segments: the core launch business, branded Space, which accounted for 22 per cent of 2025 revenue; Starlink, the satellite internet arm, at 61 per cent of revenue; and AI, housing the Grok large language model and associated compute infrastructure following a merger earlier this year, at 17 per cent of revenue.

Starlink and the launch business are profitable. The AI segment, formerly xAI, is not. It generated a loss of $6.4bn on $3.2bn of sales in 2025, according to the filing.

David Morrison, senior market analyst at Trade Nation, put the implied arithmetic plainly.

"If you strip out Starlink and launch from the $1.8 trillion expected total value, you're left with xAI being worth $1 trillion on its own. That's a big bet on xAI getting a durable competitive advantage."

The $1tn implied valuation for a segment that lost more than twice its revenue last year is the central tension of this listing. Goldman Sachs and Morgan Stanley project a six-fold increase in group revenues to $160bn by 2028, a forecast that underpins the current pricing. Kathleen Brooks, research director at XTB, noted that the valuation "is built on faith and trust in Elon Musk's vision" and called it "an extremely unusual IPO; usually you are betting on a business with proven revenue-generating abilities."

Starlink: the profitable anchor

Starlink's $11.4bn in implied 2025 revenue (61 per cent of group sales) and its profitability make it the most conventional asset in the portfolio. It has a proven subscriber base and recurring revenue. Analysts broadly agree it is the segment that lends the listing credibility.

Space launch: mature but constrained

The launch division, responsible for Falcon 9 and Starship missions, contributed roughly $4.1bn of 2025 revenue. It is profitable but capacity-constrained, and growth is tied to government contracts and the cadence of commercial satellite deployment.

AI: the speculative engine

The AI segment's losses are accelerating. Capital expenditure allocated to AI rose from 61 per cent of group capex in 2025 to 76 per cent in the first quarter of 2026, according to the registration statement. SpaceX recently filed a proposal with the Federal Communications Commission to deploy up to one million solar-powered data-centre satellites, pitching orbital compute as a solution to earthbound energy constraints.

Octavia Garcia Granados, senior analyst at Forrester, described the orbital data-centre plan as "classic Musk valuation inflation" designed to expand the company's total addressable market ahead of the listing. She added that "hardware alone ranges from $250bn to $1 trillion before launch and refresh cycles."

The UK retail offer: mechanics and constraints

UK retail investors have been granted access to the listing through a £1.5bn allocation, facilitated by Marex Financial as the public offer platform operator. Platforms including AJ Bell, Hargreaves Lansdown, Freetrade, eToro, and Interactive Investor have handled demand, with minimum subscriptions typically set at around £1,000. Applications closed on Wednesday.

Bret Johnsen, SpaceX's chief financial officer, said the unusually large retail allocation was a deliberate recognition of "folks that have been incredibly supportive of us and of Elon for a long time."

International retail investors are generally excluded from US IPOs. The UK allocation is a notable exception. However, successful applicants face immediate structural constraints. SpaceX is skipping the standard 180-day Wall Street lock-up in favour of a staggered framework, meaning early holders may find themselves unable to sell during the most volatile initial trading sessions.

Morrison warned that "successful applicants for stock may be disappointed to see SpaceX soar in its first few sessions but be unable to take a profit due to selling restrictions." He added: "As seen frequently in the past, the stock price can get ramped up excessively early on in an IPO, only for it to pull back sharply after the initial euphoria passes."

Duncan Ferris, investment writer at Freetrade, acknowledged the tension directly: "The valuation is enormous, the tech is highly experimental, and the risk factors involved are as varied as they are numerous."

Governance structure and what it means for minority shareholders

SpaceX will list with a dual-class share structure. Musk and a small group of insiders will hold Class B shares carrying 10 votes each. Public shareholders will receive Class A shares with one vote each.

The arrangement has already drawn institutional opposition. Danish pension fund Akademiker Pension has excluded SpaceX as a potential investment, citing what it called a "catastrophic" governance structure.

Lindsay Stewart, director of institutional content at Morningstar, warned that dual-class schemes "have long been a point of consternation for governance-focused institutional investors." Stewart noted that such structures "allow management to control a company with only a thin sliver of the equity" and observed that "Musk has long expressed a desire for greater control of Tesla, so it appears that he has got his way this time with SpaceX."

For UK institutional holders subject to stewardship codes, the 10:1 voting disparity raises practical questions about the ability to influence board composition, executive remuneration, or related-party transactions. Minority shareholders will have limited recourse if strategic decisions, such as the scale of AI capex, diverge from their interests.

Capital expenditure reality versus orbital ambition

The gap between SpaceX's stated ambitions and the capital required to deliver them is the least discussed and arguably most important risk in the prospectus.

The AI segment's capex share jumped from 61 per cent of group spending in 2025 to 76 per cent in Q1 2026. If the orbital data-centre programme proceeds, hardware costs alone could reach $250bn to $1tn, according to Forrester's Garcia Granados, before accounting for launch costs and satellite refresh cycles.

These figures imply that the $75bn raised in the IPO may cover only a fraction of the capital the AI division requires. Further equity raises, debt issuance, or a sustained period of heavy cash burn are plausible outcomes. For a company already operating at a $4.2bn annual loss, the trajectory of free cash flow will determine whether the current valuation holds.

Brooks at XTB summarised the core risk: the listing's pricing depends on revenue forecasts that assume a six-fold increase within three years. If those forecasts prove optimistic, the implied valuation of the AI segment, currently the largest single contributor to the group's market capitalisation, faces the sharpest correction.

The listing is scheduled for tomorrow. Whether the demand reflects conviction or momentum will become clearer once the lock-up restrictions begin to lift.