For years, putting Tesla and SpaceX under one roof sounded more like an Elon Musk thought experiment than a serious investment question. That has changed. The companies are working together more closely, SpaceX now includes xAI, Tesla owns a stake in SpaceX, and Musk himself has acknowledged the growing overlap between the businesses. No merger has been announced, but there is now enough evidence to ask what one could actually look like and what it would mean for investors.
Why the Idea Suddenly Looks More Plausible
The strongest evidence came directly from Musk during Tesla’s July earnings call. According to Reuters, Musk was asked whether combining Tesla and SpaceX could eventually make sense and pointed to the companies’ increasing collaboration, saying there was “more and more overlap.” He did not confirm that a transaction was being discussed, explaining instead that any combination would need to go through the appropriate formal process.
The idea has also gained credibility among analysts and investors. JPMorgan analysts have described the operational integration between Tesla and SpaceX as already deep, citing shared engineering talent, AI infrastructure, Terafab and Musk’s leadership. Analysts at investment bank Stifel have gone further, noting that many investors now view a combination as inevitable. Deepwater Asset Management managing partner Gene Munster has publicly put his own odds at 90%. Those assessments are opinions, rather than evidence, that formal negotiations are underway. But they show how dramatically expectations have shifted.
The Financial Connections
The financial connections are becoming more substantial as well. According to Tesla’s second quarter 10-Q, the company invested $2 billion in SpaceX common stock in March. This was after its previously planned xAI investment was converted into the right to acquire SpaceX shares. Tesla also recognized $405 million in revenue from SpaceX during the first half of 2026 from SpaceX purchases of Tesla Megapack energy-storage products.
The relationship became even more significant in August when Tesla and SpaceX announced an initial $16.8 billion investment in Terafab, a massive semiconductor complex planned for Texas. Reuters reports that the 100-million-square-foot facility is intended to manufacture advanced logic and memory chips for Tesla’s Optimus robots and Cybercabs as well as SpaceX’s planned space-based data centers. The project provides a tangible example of the two companies building infrastructure around needs they increasingly share.
None of this proves that a merger is coming. It does make the strategic and financial relationship between Tesla and SpaceX considerably more substantial than it was even a year ago.
What Would Actually Be Combined?
A Tesla-SpaceX combination would bring together businesses that extend far beyond electric vehicles and rocket launches.
SpaceX now encompasses launch services, Starlink satellite connectivity and xAI’s artificial intelligence operations. Tesla brings electric vehicles, energy storage, autonomous-driving technology, large-scale manufacturing and Optimus, Tesla’s general-purpose humanoid robot. Together, the companies would span AI models and infrastructure, chips, batteries, robots, vehicles, communications satellites, rockets and potentially space-based data centers.
Some of those connections are already tangible. SpaceX is purchasing Tesla Megapacks. The companies are investing together in semiconductor manufacturing. Even Tesla’s upcoming Roadster has been reported to include a limited-edition version using cold-gas thruster technology developed with SpaceX.
Bringing those capabilities under one corporate structure could make it easier to coordinate engineering, capital spending, manufacturing and long-term infrastructure development. There is also a strong argument for leaving the companies separate. Tesla and SpaceX already collaborate through commercial agreements and joint projects without requiring shareholders to combine two very different businesses.
Any merger would therefore need to create enough additional value to justify the added complexity.
Who Would Buy Whom?
There has been no announced transaction and no confirmed deal structure. If the companies eventually combine, three structures appear most realistic.
| Possible Structure | How It Could Work | Our View |
| SpaceX acquires Tesla | Tesla shareholders receive SpaceX shares in an all-stock or mostly stock transaction | Most plausible if one company is the buyer |
| New parent company | Tesla and SpaceX shareholders exchange their shares for stock in a newly created company that owns both businesses | Potentially the cleanest way to combine the companies |
| Tesla acquires SpaceX | Tesla issues shares or other consideration to acquire SpaceX | Least likely under current relative size and ownership structures |
SpaceX acquiring Tesla should stay first in this list, even though a new parent company may be the cleaner structure. RBC Capital Markets analyst Tom Narayan has specifically modeled an all-stock acquisition of Tesla by SpaceX. MarketWatch’s reporting on the analyst proposals provides a useful look at how Wall Street is thinking about the mechanics.
SpaceX also gives Musk much greater formal control. Its IPO prospectus projected that Musk would control approximately 82.4% of the company’s voting power after the offering, making SpaceX a controlled company under Nasdaq rules. That ownership structure could make SpaceX the more natural parent if the two businesses were folded together.
The Alphabet and Meta Model
A newly created parent remains worth considering. This model would fall squarely in line with past moves from Silicon Valley. Namely Google and Facebook forming Alphabet and Meta respectively as umbrella groups for their growing portfolios. JPMorgan, among others, has examined a new parent company as one of several alternatives.
In this scenerio, Tesla could remain Tesla operationally, SpaceX could remain SpaceX, and shareholders of both could receive stock in a larger holding company based on an agreed exchange ratio. That could preserve the individual businesses while putting capital allocation and ownership under one roof.
Regardless of the legal structure, the most important financial question would be how much of the combined company each group of shareholders receives. The exchange ratio could ultimately matter more than whether the transaction is described as an acquisition or a merger.
What Could a Merger Mean for Tesla Stock?
For Tesla shareholders, one potential benefit would be an acquisition premium. Aforementioned RBC Capital Markets analyst Tom Narayan has modeled an all-stock SpaceX acquisition of Tesla at a potential 20% to 30% premium. His analysis, while only one possible scenario, presents a plausible upside for Tesla shareholders.
Longer term, Tesla shareholders would gain exposure to businesses they do not currently own directly through Tesla, including Starlink, launch services and xAI. Tesla would become part of a much broader technology company rather than remaining primarily an investment in vehicles, energy, autonomy and robotics.
That diversification could be valuable, particularly if SpaceX, Starlink and xAI continue growing. It would also change the investment considerably. Someone who bought Tesla primarily for Optimus, robotaxis or Tesla Energy would suddenly have meaningful exposure to rockets, satellite communications, government contracts and large-scale AI infrastructure.
Governance would also become important. If SpaceX acquired Tesla or became the parent of a combined company, Tesla shareholders could find themselves inside a corporate structure where Musk has substantially greater voting control. SpaceX’s public offering documents make clear how much authority its Class B structure gives Musk over the board and shareholder votes.
What Could a Merger Mean for SpaceX Stock?
SpaceX shareholders would face a different calculation. If SpaceX acquired Tesla with stock, it would need to issue a substantial number of new shares. Existing SpaceX investors would own a smaller percentage of the combined company, making the valuation assigned to Tesla critical.
In exchange, SpaceX would add Tesla’s energy-storage business, manufacturing capabilities, autonomous vehicles, robotics and physical AI technology. Terafab demonstrates where those businesses are already beginning to intersect. Its planned chips are intended to serve both Tesla’s terrestrial AI products and SpaceX’s space-based computing ambitions. The companies’ $16.8 billion initial Terafab commitment makes that relationship much more concrete than a simple technology-sharing agreement.
SpaceX investors would also inherit Tesla’s risks, including automotive competition, substantial capital requirements and its extensive exposure to China. If investors believed SpaceX was paying too much for Tesla, SpaceX shares could come under pressure even if the long-term strategic case for combining the businesses made sense.
A merger would not automatically be bullish for both stocks. Its effect on each shareholder group would depend heavily on the transaction price, exchange ratio and resulting dilution.
What Could Stand in the Way?
For all of the potential strategic benefits, a Tesla-SpaceX combination would create significant complications. Regulation, governance and Tesla’s extensive operations in China could create some of the largest obstacles.
China deserves particular attention because of SpaceX’s relationship with the U.S. government. SpaceX’s IPO disclosures state that approximately one-fifth of its 2025 revenue came from U.S. federal agencies, including NASA, defense agencies and Intelligence Community customers. Those contracts bring national security and government contracting requirements that do not apply to an ordinary commercial technology company.
Tesla, meanwhile, operates its largest and most productive vehicle factory in Shanghai. Reuters’ review of Tesla’s China operations found that the factory has served as the company’s primary export hub for Europe, Canada and Asia-Pacific and accounted for more than half of Tesla’s 2025 global vehicle deliveries. Combining that operation with a major U.S. government and defense contractor could create significant scrutiny in both Washington and Beijing.
Separation Anxiety
The possibility has already generated controversy among interested parties. The Wall Street Journal reported Tesla advisers discussing ways of separating the China business ahead of a possible SpaceX combination, including a sale or spinoff. Musk strongly denied the report, saying the idea had never been discussed. The same report notes that JPMorgan analysts view regulatory approvals, particularly in China, as a practical bottleneck to a merger.
A subsequent Reuters analysis of the legal and regulatory issues found that even a separation of Tesla’s China operations could raise difficult questions involving intellectual property, software, AI systems, data governance and ownership. That makes China more than a peripheral issue in the merger discussion.
Governance would create another layer of complexity. Musk sits at the center of both businesses. The exchange ratio would determine how much of the combined company’s value each shareholder group receives. A transaction of this scale would require careful board processes, independent review and regulatory scrutiny.
So, How Likely Is a Tesla-SpaceX Merger?
There is not enough evidence to assign a meaningful probability. Gene Munster has placed his own estimate at 90%, while other analysts have been more cautious. SpaceX’s August earnings call provided no new indication that a merger was imminent, and there is still no public evidence that the companies have entered formal negotiations. MarketWatch noted the absence of any merger discussion on SpaceX’s latest earnings call.
The possibility nevertheless looks more credible than it did a year ago. SpaceX has absorbed xAI, Tesla has become a SpaceX shareholder, hundreds of millions of dollars in business are already flowing between the companies, Terafab has become a multibillion-dollar joint infrastructure project, and Musk declined to dismiss a combination when directly asked about it.
That is enough for us to view a Tesla-SpaceX merger as a legitimate possibility worth following. It is still too speculative to serve as the primary investment thesis for either company.
How We’re Thinking About the Two Stocks
Tesla’s investment case still rests on what the company can build through autonomy, robotics, energy and its broader physical AI strategy. SpaceX has its own case built around launch services, Starlink, AI infrastructure and the opportunities created by xAI. Both companies have growth stories that can stand independently.
Any merger announcement would need to be evaluated primarily on the economics of the transaction. The exchange ratio, acquisition premium, ownership structure, dilution and governance arrangements would determine whether the combination actually creates value for Tesla and SpaceX shareholders. A compelling strategic rationale can still produce a poor investment outcome if one side pays too much.
For now, we view a merger as a possible additional source of upside, rather than the reason to own either stock. Tesla and SpaceX are already becoming more closely connected operationally and financially, and the scale of projects such as Terafab suggests that relationship is likely to continue developing whether or not the companies ultimately combine.
Invest for What Comes Next
Technology companies evolve quickly, and understanding how major strategic changes could affect your portfolio is an important part of long-term investing.
At Michael Leslie Investments, we evaluate individual companies, emerging technologies and changing market opportunities with an emphasis on long-term value rather than short-term speculation.
Contact Michael Leslie Investments today to discuss how Tesla, SpaceX, AI and other emerging opportunities may fit within your investment strategy.
