Musk Confirms SpaceX + Tesla Merger Talks: A $3.5 Trillion Mega Company?

Elon Musk just confirmed it. SpaceX and Tesla might become ONE company — worth $3.5 trillion. It would be the biggest deal in history. But there's one vote that could kill it.

Elon Musk has built a reputation for floating big ideas in public and then making them happen. This time, the idea involves two of the most valuable companies he runs. On October 20, 2026, he confirmed that SpaceX and Tesla are looking at a possible merger. If it goes through, it would be the biggest corporate deal ever done.

It is still early, and nothing is signed. But the talks are real, and the questions they raise are worth taking seriously. What would a combined company look like? Why would Musk want it? Who could stop it?

What Musk Actually Said

Musk spoke on the sidelines of SpaceX's earnings presentation. He said a merger between SpaceX and Tesla would be a "good idea," but that it was not a certainty, and that special committees had been formed at both companies to discuss a possible union.

He was careful with his wording. He said it would be premature to assume a merger would happen, because the committees had not agreed on any terms and might never do so. He also pushed back on the growing assumption in the market. He said some people treat the merger as a certainty, and that this would be overstating it, adding that shareholders would have to support the idea in the end.

Markets did not wait for details. SpaceX shares rose 8% in extended trading after the comments, and Tesla shares rose 1.8%.

Not every report reads his remarks the same way. One account says he put the odds of a deal at 90 percent by early 2027, and that Tesla would likely need to be valued above $500 per share to win approval. Since the two accounts differ on how confident he sounded, treat that figure with some caution until there is more on the record.

How We Got Here

This did not come out of nowhere. The merger idea has been circulating for most of the year.

In late January, Bloomberg reported that SpaceX was considering a merger with Tesla, as well as a separate combination with the AI company xAI. The xAI deal came first. The SpaceX and xAI union in February was valued at $1.25 trillion.

Tesla was already tied into that story. Tesla invested $2 billion in xAI in January, and that stake converted into SpaceX holdings when the merger closed the following month. So before any talks began, Tesla already owned a piece of SpaceX.

Then came the IPO. In late May, CNBC reported that Musk had discussed combining SpaceX and Tesla with colleagues as SpaceX prepared to list on the Nasdaq. One early SpaceX investor described the merger as a question of "when," not "if."

By October, the talk had turned into formal action. SpaceX had gone public, and by the time of its earnings presentation it was reporting numbers as a listed company. The company posted its first profit since going public. That gave Musk a stronger platform to say out loud what many people had been guessing.

Why Merge at All?

The honest answer is that the two companies have been moving toward each other for years.

Shared AI and computing needs. Both companies now depend heavily on AI. Tesla uses it for driving software and robots. SpaceX, now combined with xAI, builds AI systems and the computing power behind them. Musk said the tie-up has a lot of merit because of how closely the two firms' AI work fits together.

Money already moves between them. Reporting from May noted that SpaceX had spent about $697 million on Tesla Megapacks and $131 million on Cybertrucks. Those are real purchases between two separate companies, and every one of them involves a price negotiation that a merger would make unnecessary.

Overlapping energy and infrastructure ambitions. A SpaceX-Tesla merger would line up Tesla's vehicle production and energy storage with SpaceX's ambitions for infrastructure beyond Earth. Batteries, solar, manufacturing at scale, and launch capacity all feed into the same long-term story Musk likes to tell.

Leadership overlap. Musk's brother Kimbal previously served as a director at SpaceX and currently sits on Tesla's board. The people, the ideas, and the suppliers already cross over. Putting them under one roof would simply make the arrangement official.

An outside expert agrees the logic holds up. Jerayr Haleblian, a mergers and acquisitions specialist at the University of California, Riverside, said a SpaceX-Tesla merger has "sound logic" behind it.

The $3.5 Trillion Question

The headline number deserves a closer look, because it is an estimate and not a price tag.

Based on valuations reported in May, SpaceX at about $1.25 trillion privately and Tesla at about $1.6 trillion would combine into a company worth roughly $3.35 trillion to $3.6 trillion. That is where the $3.5 trillion figure comes from. Other outlets use "more than $3 trillion," which is the safer way to put it.

Either way, the scale is hard to picture. A SpaceX-Tesla merger would be the biggest corporate tie-up in history, far larger than the $1.25 trillion SpaceX and xAI deal. For comparison, that earlier deal was already the largest ever recorded.

The numbers will move. SpaceX has since listed, so its value is now set by the market, not by private funding rounds. Tesla's share price moves daily. Any final deal would depend on the exchange ratio, meaning how many shares of the new company each Tesla holder would get. That ratio is where most of the negotiation, and most of the conflict, will happen.

How the Deal Might Work

The details are still being worked out, but some early facts are clear.

Both companies formed special committees made up of independent directors, hired advisers, and are at an early stage of talks, according to three sources who spoke to Reuters. The same reporting says an all-stock deal is one option, and SpaceX approached Tesla about it in recent weeks.

On timing, Bloomberg says there is a push to announce a deal by mid-2027. That would leave plenty of time for negotiation, filings, and shareholder votes.

An all-stock deal makes sense for a transaction this size. Nobody has the cash to buy a company worth more than a trillion dollars, so shareholders would swap their shares for shares in the new company instead.

One more detail matters here. A person familiar with the matter told Reuters the talks could result in SpaceX acquiring Tesla. That would be a notable twist, since Tesla is the older and, until recently, the more valuable of the two.

The Hurdles

Even if the logic is sound, this deal faces real obstacles.

Tesla's shareholders. This is the biggest one. Musk himself called the 50 percent shareholder vote at Tesla a "high hurdle." Musk owns nearly a fifth of Tesla and just under half of SpaceX. At SpaceX, control is not much of an issue. Bloomberg reports Musk controls more than 80% of the voting power there, which makes approval easier, while Tesla is harder because his stake is only about a fifth. Tesla's other investors, from small retail holders to big funds, will want to know they are getting a fair price.

Conflicts of interest. Musk sits on both sides of this deal. That is why the independent committees matter. Advisers are reportedly in contact with Musk's lawyers to make sure he stays out of the talks. Whether that is realistic for the person who runs both companies is something investors and courts will probably look at closely.His own comments. There are signs that public remarks can complicate things. Reuters reported that some people working on the possible deal worry Musk's public comments could draw shareholder scrutiny and delay the process by several weeks. Musk seemed aware of the risk, joking that he had been "tap dancing through a minefield."

Regulators. A deal of this size would almost certainly attract attention from antitrust and securities regulators. One analyst cited in earlier coverage put the chance of the merger closing by 2027 at 80 to 90 percent, pending SEC review. That is an optimistic forecast, and it is one person's estimate.

What It Would Mean for Investors

For investors, a merger would change what they actually own.

Today, Tesla stock is mostly a bet on electric vehicles, energy storage, and the hope of self-driving cars and robots. SpaceX stock is a bet on rockets, Starlink satellite internet, and now AI. A combined company would be all of that at once, which is either very exciting or very risky depending on your view.

The bull case is simple. One company, one management structure, shared technology, and no more negotiating between related parties. Supporters say it could speed up work on AI, robotics, and energy, and give Musk a single story to sell to investors.

The bear case is just as clear. A company this broad is hard to value and hard to manage. Investors who wanted a pure car company or a pure space company would end up with something much bigger and less focused. Concentration risk would also grow, since so much of the company's fate would rest on one person.

For anyone holding Tesla or SpaceX shares, the practical advice is to watch the terms. The exchange ratio and the shareholder vote will matter far more than any headline number.

What It Would Mean Beyond Wall Street

The effects would reach well outside the stock market.

The auto industry. Other carmakers would face a rival backed by the resources of a space and AI giant. Tesla would be able to draw on SpaceX's cash and computing power without much friction.

The space industry. SpaceX already dominates launch. Pairing it with Tesla's manufacturing and battery know-how could widen that lead.

Big Tech. With xAI already inside SpaceX, the combined company would compete directly with the largest AI players. It would also have something they lack: factories, vehicles, rockets, and satellites that can all use the same AI.

Governance. Perhaps the most lasting effect would be on how large public companies are run. A deal this size, controlled so heavily by one founder, would become a test case for how well shareholder protections work.

What to Watch Next

Several things are worth tracking over the coming months:Committee updates. Any news on valuation, structure, or advisers.Deal terms. Especially the exchange ratio and whether Tesla or SpaceX is the buyer.Tesla's shareholder reaction. Large funds and long-term holders will signal early whether the vote is winnable.Regulatory signals. Any comment from the SEC or antitrust authorities.Musk's own behavior. Whether he stays quiet, as advisers reportedly want, or keeps talking.

The Bottom Line

Musk has confirmed what the market suspected: SpaceX and Tesla are seriously studying a combination. The logic is easy to follow, with shared AI work, money already flowing between the two, and overlapping goals in energy and technology. The size, a combined value in the range of $3 trillion to $3.5 trillion, would set a record by a wide margin.

But a lot still has to go right. The committees have not agreed on terms and may never do so, Tesla's shareholders have a real vote, and regulators will have their say. Musk himself has said the outcome is far from certain.

So is this the birth of a $3.5 trillion mega company? It might be. For now, it is a serious proposal moving through a long process, and the next few months will show whether it turns into a real deal or stays an interesting idea.

sources:

Reuters, Bloomberg, CNBC..