SpaceX Stock and the xAI Merger: What the $1.25 Trillion Deal Means Before the IPO

SpaceX has always been one of the most watched pre-IPO assets in the world. The combination of reusable rockets, a dominant commercial launch business, Starlink satellite internet, and a pipeline of government contracts made it a company unlike almost anything else in private markets.

In February 2026, it became something larger. SpaceX completed its acquisition of xAI, the artificial intelligence company behind the Grok chatbot, in an all-stock deal that values the combined entity at $1.25 trillion. SpaceX is valued at $1 trillion in the transaction. xAI brings an additional $250 billion. The result is the largest merger in history, and it is happening while both companies are still private, ahead of a SpaceX IPO that is reportedly targeting mid-2026.

For investors thinking about SpaceX stock, understanding what this merger actually means -- what it adds, what it complicates, and what questions remain -- is the work that needs to happen before any public listing arrives.

What the SpaceX xAI Merger Actually Is

The transaction is structured as an all-stock share exchange. Each share of xAI converts into 0.1433 shares of SpaceX stock, with xAI shares valued at $75.46 and SpaceX shares at $526.59, according to documents reported by CNBC.

This is not the first consolidation move in Musk's business ecosystem. In March 2025, xAI acquired X, the social media platform formerly known as Twitter, in a separate all-stock transaction. That deal valued X at an estimated $33 billion and xAI at $80 billion at the time. The SpaceX acquisition of xAI -- which now includes X -- follows roughly a year later, with xAI's board having assessed its fair value at $250 billion after significant growth in its AI operations.

The combined entity brings together four distinct businesses under one structure: SpaceX's orbital launch and defence contracts, Starlink's satellite internet network, xAI's Grok AI model and infrastructure, and the X social platform with its data and distribution reach.

Musk described the rationale in a blog post announcing the deal. Current AI development is constrained by the energy and physical space demands of terrestrial data centres. His stated thesis is that moving compute infrastructure into orbit -- using Starlink as a backbone and SpaceX's launch capabilities as the logistics layer -- could remove those constraints. The merger is framed as the infrastructure play that makes orbital data centres viable.

Why SpaceX Was Already the Most Valuable Private Company in the World

Before the xAI acquisition, SpaceX was already in a category of its own among pre-IPO assets. A secondary share sale in December 2025 valued the company at $800 billion. That figure reflected the underlying business, not speculation.

SpaceX is the dominant provider of orbital launch services globally. It holds multi-billion dollar contracts with NASA and the US Department of Defence. Its Falcon 9 rocket has completed hundreds of missions with a reliability record that no competitor has matched. Starlink, its satellite internet service, operates more than 9,000 satellites and serves approximately nine million customers. That subscriber base generates recurring revenue at scale while the satellite constellation continues to expand.

The business is profitable, which is unusual for companies at this stage of technological ambition. Reported revenue for the combined SpaceX entity is estimated at around $16 billion, with approximately $3 billion in operating profit, and a growth rate of roughly 50% annually.

This is what made SpaceX such a compelling pre-IPO story before the merger. The xAI acquisition adds scale and a technology thesis. It also adds complexity and risk that serious investors need to weigh.

The IPO Timeline and What Investors Are Watching

SpaceX confirmed its intention to go public in December 2025. The Financial Times reported the company is targeting a listing valued at up to $1.5 trillion, with mid-2026 as the expected timing. Prediction market platform Kalshi puts the probability of a SpaceX IPO before September 2026 at 76%.

At a $1.5 trillion valuation, SpaceX stock would be priced at approximately 94 times trailing sales and around 500 times trailing earnings, based on the estimated combined financials. These are significant multiples. They reflect the growth trajectory and the scale of the addressable market, but they also leave limited room for error in execution.

The IPO, if it proceeds on this timeline, would be one of the largest public listings in history. It would also be unusual in that investors buying SpaceX stock at IPO would be buying into four distinct businesses at once -- aerospace, satellite internet, AI infrastructure, and social media -- each at different stages of profitability and each carrying its own risk profile.

What the Merger Adds to the Investment Thesis

The strategic logic of combining SpaceX and xAI is clearest when you look at what each business gives the other.

AI Needs Infrastructure at Scale

Training and running large AI models requires enormous computing power, and that computing power requires electricity and physical space. The constraint is increasingly acute as model capabilities scale. Musk's argument is that space-based data centres, powered by solar energy and connected through Starlink, represent the next phase of AI infrastructure.

If that thesis is correct, SpaceX is not just a launch company. It becomes the physical infrastructure layer for the next generation of AI compute. Grok models run on xAI's hardware. That hardware would increasingly operate in orbit, launched by SpaceX rockets, connected through Starlink satellites. The vertical integration is genuine.

Data and Distribution

xAI's ownership of X gives it something that most AI companies do not have: a direct, real-time feed of human communication at scale. X's data is used to train Grok, and Grok is distributed back to X's users. That feedback loop creates a proprietary dataset that is difficult to replicate through conventional means.

Government Relationships

SpaceX's existing relationships with NASA, the Department of Defence, and allied governments represent a distribution channel for AI-enabled space infrastructure that would take years to build from scratch. The combined entity inherits those contracts and relationships.

The Risks That Matter Before the IPO

Investment-grade analysis covers both sides. The SpaceX xAI merger carries material risks that are directly relevant to investors considering pre-IPO exposure.

xAI's Talent Crisis

Of the twelve people who co-founded xAI with Musk in 2023, only two remain as of early 2026. A wave of departures accelerated in February, including co-founders Jimmy Ba and Tony Wu, following earlier exits by Igor Babuschkin, Kyle Kosic, Christian Szegedy, Greg Yang, and several others. Musk himself has acknowledged the situation, stating in March 2026 that xAI "was not built right first time around" and is being rebuilt from foundations up.

For an AI company whose competitive position depends on model quality and research capability, the loss of founding researchers is a significant development. The timing -- coming weeks after the SpaceX merger closed and after Tesla invested $2 billion in xAI -- has drawn scrutiny from investors and commentators.

Regulatory Exposure

xAI faces active regulatory investigations in the United States, Europe, India, Malaysia, and other jurisdictions following incidents in which Grok was used to generate non-consensual explicit imagery, including of children. French authorities raided X's offices as part of a separate probe. Legal experts have noted that these liabilities, which existed in the private xAI entity, are now part of SpaceX's corporate structure ahead of an IPO, and will require disclosure and management in any public prospectus.

Valuation Questions

At a $1.5 trillion IPO target, investors are pricing in substantial future growth across four businesses. The combined entity includes xAI, which is not yet profitable. The 500x trailing earnings multiple for the combined company leaves limited margin for execution risk. Secondary market pricing ahead of any IPO can reflect optimism that public market investors may not sustain once formal disclosure requirements apply.

Governance Structure

The merger was executed between two Musk-controlled private entities without the independent oversight mechanisms that would apply to a public company transaction. SpaceX, xAI, and Tesla have significant business overlaps and Musk sits at the centre of all of them. Tesla's board, which Musk effectively controls, approved a $2 billion investment in xAI shortly before SpaceX acquired xAI. These governance dynamics will receive significant scrutiny if and when the company enters public markets.

What Investors Are Actually Underwriting

An investment in SpaceX stock -- whether pre-IPO or at the eventual listing -- is a bet on several distinct things simultaneously.

The first is SpaceX's core launch and Starlink business, which is profitable, growing, and dominant in its category. This is the clearest part of the thesis.

The second is the orbital data centre concept -- that Musk's framing of space-based AI infrastructure will prove out technically and commercially at scale. This is unproven.

The third is xAI's ability to rebuild its research capability and maintain a competitive position in large language models against OpenAI, Google DeepMind, Anthropic, and others. Given the co-founder departures, this is an open question.

The fourth is whether X, the social platform, stabilises as a business that contributes value to the combined entity rather than draining resources from it. Its recent trajectory has been mixed.

None of this makes SpaceX stock an unattractive opportunity. It makes it a complex one. Investors who understand what they are betting on are in a materially better position than those chasing the name.

How to Access SpaceX Before the IPO

SpaceX remains private. For most investors, that means the only path to pre-IPO exposure is through structured vehicles that provide access to private company economic rights ahead of any public listing.

Through WLTH's pre-IPO access platform, investors can explore tokenised economic rights to private company exposure, including assets in the pre-IPO space. WLTH provides access to private market opportunities with significantly lower entry thresholds than conventional private market vehicles. This is economic exposure to private company performance, not direct equity or shareholder rights in SpaceX or any underlying company.

The IPO window is open. The question is whether you understand what you are stepping into before it closes.

WLTH provides tokenised economic rights to private market exposure. This does not constitute financial advice. Capital is at risk.