SpaceX and Tesla are studying a merger, the Financial Times reports. Why would a rocket company merge with an electric car company, one might ask. The simple answer may be that SpaceX is building compute faster than it can pay for it, and Tesla, also run by Elon Musk, has the balance sheet to offset much of the cost. Musk may be right that the two companies fit together industrially, but the cleanest thing a merger adds is one capital structure. For a Tesla holder, the whole transaction can be reduced to a single term: the ratio at which his Tesla stock is exchanged for SpaceX’s.
Musk Has Done This Before, at One-Thousandth the Scale
Musk has done this before, at one-thousandth the scale. In 2016, Tesla bought SolarCity, a cash-consuming solar installer that he chaired and owned more of than anyone else, for about $2.6 billion in stock. Musk presented the purchase as the completion of a vertically integrated energy company. Shareholders sued, arguing that Tesla’s balance sheet had been used to rescue another of his companies, and the litigation ran until a Delaware court found for him in 2022. The parts of the play are the same this time: a board committee, a recusal, a fairness opinion.
What has no precedent is the size. The largest merger ever completed, Vodafone’s purchase of Mannesmann in 2000, was worth around $180 billion at the time. The combination being studied is some nineteen times that on the headline numbers. No body of practice covers a transaction of that size, and no regulator has supervised one.
Compute Landlord With a Rocket Company Attached
Consider what the company that listed in June at $1.77 trillion sells. Of $14.6 billion in third-quarter revenue, according to FT, $7.6 billion came from renting out computing capacity and $5.2 billion from Starlink broadband subscriptions. Launch, the business the company is named for, lost money on its $1.8 billion in revenue. Just over half of SpaceX’s revenue is a data-center rental business, a third is a satellite internet service, and the rockets are the remaining eighth. Starlink alone generated $2.4 billion of the group’s $4.4 billion of net income; more than half of all SpaceX’s profit came from selling internet access.
The data center rental line nearly tripled in three months, from $2.56 billion in the second quarter, and rose ninefold from $813 million a year ago. Musk told investors on the third-quarter earnings call that he is hounded by every "hyperscaler" and dozens of smaller companies for capacity, and could rent the machines out several times over. The customers he named include Anthropic and Google. The fastest-growing revenue line in the portfolio is therefore rented to the firms SpaceX is competing against in AI model development, and those firms are building their own capacity as fast as they can finance it.
Staying in that business costs more every quarter. Capital expenditure ran to $19.6 billion in the third quarter, against $4.4 billion of net income, and management guided the fourth quarter to between $35 billion and $40 billion. At the midpoint, this represents a 91 percent increase in quarterly spending, and more than twice what the company earns in a year at its current rate. Installed capacity stood at 1.7 gigawatts at the end of September, and Musk said he would be surprised if it were not 13 gigawatts by the end of next year, almost eight times as much in five quarters. SpaceX’s June initial public offering raised $86 billion, the largest flotation on record, but at the rate management has just guided, that is a little over two quarters of spending.
Net income is the wrong denominator for a business depreciating gigawatts of silicon, and the company has published no operating cash flow or cash balance to replace it. But this much is clear: spending is rising by roughly half again each quarter while earnings are not.
What the Merger Actually Solves
The industrial case is real. SpaceX earned $4.4 billion last quarter, raised $86 billion in June, and is turning customers away. That is not the profile of a company in need of rescue. And the synergies Musk named between the two companies are already in place by agreement: Terafab, a Texas fabrication plant that will cost as much as $119 billion and will make chips for Tesla’s vehicles and robots and for SpaceX’s orbital data centers, was announced in March as a joint venture between the two firms; Grok already ships free in Tesla cars; and the Roadster flies on SpaceX cold-gas thrusters. Common ownership would add one thing that contracts cannot supply, a single capital structure.
The exchange ratio sets how much of the buildout Tesla’s holders pay for, and the mark is contested in a narrower way than it looks. SpaceX listed in June at $135 a share, valuing it near $1.77 trillion, and closed its first day at $161, or $2.10 trillion. It trades at $147.79 now, about a third below its June high, and is still worth more than at listing: the mark rests on roughly 13.2 billion shares, of which the offering sold 556 million. At $1.95 trillion against Tesla’s $1.48 trillion, SpaceX is the larger company by a third, and the combination comes to about $3.4 trillion. The real disagreement is stranger and smaller. On the same day, one provider put SpaceX at $1.947 trillion and another at $2.005 trillion, $58 billion apart, and it is inside that spread that a committee will negotiate. Recusal takes Musk out of the negotiation directly, but it leaves the negotiators appointed by him.
Concentration is the discount the committee should be pricing. A combined company would hold dominant positions in volatile markets for American rockets, satellite networks (Ukrainian forces fight on), rented compute (competitor labs train on), autonomous fleets (Google and others compete with), and, perhaps, robots.1 Tesla shareholders are being asked to swap a consumer manufacturer for a share of all five.
What Tesla Shareholders Should Know
Before any ratio is agreed, the Tesla committee should obtain and publish three figures:
- SpaceX’s funded capital runway in quarters at the guided fourth-quarter rate
- Operating cash flow in place of its net income
- Contracted term of the Anthropic and Google compute agreements
Those three numbers would show how much of the capital program Tesla’s shareholders would underwrite, and on what notice the revenue behind it could disappear.
If the ratio is struck above where SpaceX trades today, especially if spending guidance keeps climbing, the case will be less clear-cut than the natural alignment of two industrial giants suggests.