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Elon Musk runs the world's most valuable car company and the world's most valuable space company. Now both of their boards are formally asking the same question: should they become one company? The answer, for now, is that nobody knows — and the official record says so in unusually plain language.
The story began on October 20, 2026, when Musk told investors on SpaceX's third-quarter earnings call that both companies had formed special committees of independent directors to explore a possible combination. Tesla confirmed it two days later in its quarterly filing with the US Securities and Exchange Commission. Since then, the speculation has run far ahead of the facts. Here is what is actually on the record — and what would have to happen before any deal exists.
What the filings actually say
Tesla's third-quarter Form 10-Q, filed on October 22, says its board "has formed a special committee comprising disinterested directors to explore deepening Tesla's relationship with SpaceX, which could be through certain arrangements including without limitation a business combination". The same paragraph adds the sentence that matters most: there is "no assurance that any such Transaction will be consummated".
SpaceX's own quarterly report, filed the same day, is worded the same way. Its committee has not reached a decision, and any combination would need "further approval by our special committee, our board of directors and our controlling shareholder". That controlling shareholder is Musk himself. There is no merger agreement, no deal announcement, no shareholder vote scheduled, and no merger proposal on the ballot for Tesla's December 3 annual meeting.
Musk has also said he cannot take part in the committees' discussions, because he leads both companies. The conflict of interest is the reason the committees exist at all: independent directors, not Musk, must decide whether a deal makes sense and on what terms.
The vote would be the hard part
If the committees ever did agree on terms, the biggest obstacle would be Tesla's shareholders. Musk said on the earnings call that a merger would need approval from a majority of all outstanding Tesla shares — not just a majority of the votes cast at a meeting, but a majority of every share that exists. With about 3.95 billion Tesla shares outstanding, that means roughly 1.98 billion votes in favour.
Musk cannot deliver that number alone. According to Tesla's proxy statement, he can vote about 699.6 million shares. A further 423.7 million shares from his 2025 pay package are voted by Tesla's corporate secretary in proportion to how other shareholders vote. The remaining 2.83 billion shares belong to everyone else. In other words, a merger would need genuine majority support from Tesla's public shareholders — a high bar for a deal whose terms do not yet exist.
Why anyone would want this
The industrial logic, as supporters describe it, is about putting the whole hardware stack under one roof: SpaceX's rockets and Starlink satellites, Tesla's cars, robots and AI chips, and the energy business that ties them together. The two companies already work together — Tesla disclosed in July that it had invested $2.00 billion in SpaceX shares — and in August they formally announced a joint project called Terafab. A combined company, press estimates suggest, could be worth roughly $3.5 trillion, though that figure is an estimate, not a deal price.
SpaceX now also has something it lacked until this year: a public currency for deals. The company completed its initial public offering on June 12, 2026, listing on the Nasdaq as SPCX at a valuation above $2 trillion, and four days later agreed to buy the AI coding company Cursor for $60 billion in stock. An all-stock merger, in which SpaceX shares would be exchanged for Tesla shares, is the structure most analysts expect if talks ever get that far.
Why it might never happen
There are at least three reasons to be sceptical. First, the governance problem is real: the same person controls both companies, and any deal would be examined — by shareholders, by regulators and by the courts — as a transaction between two companies run by the same man. Second, the money is awkward. Reuters has reported that under a merger, Musk would keep voting control but would not receive the $1 trillion pay package that Tesla shareholders approved for him as a standalone chief executive. Third, not every big investor is convinced: Scottish Mortgage, a longtime holder of both companies, sold its last Tesla shares and cut its SpaceX holding to 11.1% of its assets in early November.
The politics have shifted too. The November 3 midterm elections handed Democrats control of House committees from January, and they will be able to hold hearings on any deal. One investment bank, Barclays, has projected that an announcement could come before Tesla's December 3 shareholder meeting, but the committees have given no timetable of their own.
What to watch next
Three dates matter. Tesla's annual meeting on December 3 will be the first public test of shareholder mood, even though no merger proposal is on its agenda. Any filing — an 8-K announcing a deal, or a disclosure that talks have ended — would settle the question overnight. And the committees themselves will eventually have to say something: they were formed at shareholders' request, and silence is not a permanent option.
Until then, the honest summary is short. Two special committees exist. No terms have been agreed. No deal has been announced. And the man at the centre of both companies is not allowed in the room where the decision will be made. Everything else is speculation — including the $3.5 trillion number.
For more on boardroom drama in big tech, see how Nvidia's board is preparing to remove its own chief executive. According to the merger evidence tracker and filings coverage, the committees were confirmed on October 20, 2026, and no transaction terms have been agreed.