Independent committees at Tesla and SpaceX are exploring a merger that would combine approx. $3.5T of value into one company, ranking about fifth in the world. No terms have been agreed, it may never happen, and Tesla's December 3 annual meeting has no merger proposal on it.
Elon Musk confirmed on October 20, 2026 that independent committees at Tesla and SpaceX are exploring a merger of the two companies. At October prices, the combined company would be worth approx. $3.5T, about $2T of SpaceX plus about $1.5T of Tesla, which would rank it about fifth in the world by market value, ahead of Amazon at approx. $2.878T and just behind Alphabet at approx. $3.573T, on the November 11 snapshot. It would be the largest corporate combination in history, and it would put the world's richest person in control of one of the world's largest companies. It may also never happen.
The committees are exploring, not negotiating a deal. No terms have been agreed, no price has been set, and Musk himself has said the merger might never happen. Tesla's annual meeting on December 3, 2026 has no merger proposal on its agenda. A deal would need a majority of all Tesla shares to approve it, not just a majority of those voting, which is a high bar for a transaction this size. Reporting suggests that if SpaceX acquired Tesla, Musk would own about 37% of the combined company and control about 56% of the votes, according to Barclays analysis cited in November 2026. That concentration of control is part of why the idea is controversial, and why the committees are independent of Musk in the first place.
The logic, as Musk has described it, is that Tesla and SpaceX increasingly share technology and ambition: Tesla builds robots and autonomous vehicles, SpaceX builds rockets and satellites, and both depend on AI, batteries, and manufacturing at scale. SpaceX acquired xAI in February 2026, in a combination valued at approx. $1.25T, which already folded Musk's AI company into the rocket company. A Tesla merger would extend the same logic. SpaceX itself has changed character this year: it went public on June 12, 2026, raising approx. $75B at $135 a share and closing at $161.11 on day one, with its value topping $2T intraday. At the November 11 close it is worth approx. $1.897T, and Tesla approx. $1.544T, both already members of the trillion-dollar club in their own right.
If a merger happened, the club would lose a member and gain a giant: fourteen companies would become thirteen, and a new approx. $3.5T company would sit near the top of the ranking, behind only Apple, Nvidia, Microsoft, and Alphabet. It would also transform the trillionaire race. Musk's fortune, currently approx. $891B on Forbes Real-Time as of November 12, 2026, is split between his Tesla and SpaceX stakes; a combined company would concentrate it, and its valuation would move his net worth with it. His Tesla pay package, approved in November 2025, could separately award him stock worth approx. $1T if Tesla reaches an $8.5T market cap plus one million robotaxis and one million humanoid robots, but none of those milestones has been met.
Until terms exist, this is a story to watch, not a deal to count. The committees may recommend nothing, shareholders may reject whatever they recommend, and regulators would have their own questions. We will update this post if the committees report. For now, the honest summary is the one Musk gave: the merger is being explored, it would be enormous, and it may never happen.