Will Tesla Merge With SpaceX? What Shareholders Need to Know
Elon Musk just confirmed that his two trillion dollar companies are formally talking about becoming one. Here is the valuation math, what each group of shareholders stands to gain or lose, and our honest read on how both stocks could trade if the deal actually closes.
Market values as of the October 22, 2026 close, rounded. Sources listed at the bottom of this post.
What actually happened this week
On Tuesday, October 20, SpaceX held its third quarter earnings call, and the big headline was not the numbers. Musk told analysts that both SpaceX and Tesla had set up special committees of independent directors to study a combination. He described himself as conflicted and said he is staying out of the committee talks, but he did not hide where he stands.
“I do think there’s a lot of merit to combining the companies.”Elon Musk on the SpaceX earnings webcast, via the South China Morning Post
He was also careful to cool things down. Musk said that people treating a merger as a certainty are overstating it, and that the committees have not agreed on terms and may never do so. He compared talking about the deal in public to “tap dancing through a minefield.”
Markets took the news in two very different moods. SpaceX shares jumped roughly 8 to 9 percent on Wednesday, while Tesla gained a few percent. By Thursday the excitement was gone. SpaceX fell about 9 percent to close at $144.75, back below its $150 IPO opening price, as traders took profits and a batch of locked up shares became free to sell. Tesla slipped about 3 percent and is now down roughly 17 percent for the year, according to CNBC.
If the deal happens, it would be the largest corporate merger ever recorded, far bigger than the roughly $1.25 trillion combination of SpaceX and xAI earlier this year.
Why Musk wants these two companies together
A few years ago, a rocket company and a car company had almost nothing in common. That is not true anymore. The overlap has been growing quietly for a while, and it now touches almost every big bet Musk is making.
- Chips. Terafab, the joint chip venture being built in Grimes County, Texas with SpaceX and Intel, is supposed to make processors for Tesla’s robotaxis and Optimus robots as well as SpaceX’s AI data centers. Musk says the first test chip should arrive around May or June of 2027, with volume production targeted for the third quarter of 2028.
- AI software. Grok, which now lives inside SpaceX after the xAI deal, already powers the voice assistant in Tesla cars and helps run Optimus.
- Connectivity. Starlink is going into Tesla vehicles, starting with Cybertruck.
- Energy. AI data centers need enormous amounts of power, and Tesla’s Megapack storage business says it is nearly sold out through 2027.
Then there is the part nobody can ignore: control. Musk owns about 19.8 percent of Tesla but holds more than 80 percent of SpaceX voting power through 10 to 1 supervoting shares. Because SpaceX is now the larger company by market value, it would almost certainly be the buyer in a stock swap. That structure would let Musk carry his supervoting setup into the combined company, giving him far tighter control over Tesla’s assets than he has today. He has said for years that he wants more influence over Tesla before building out its AI and robotics future, and this would hand it to him.
Not every expert sees that as a red flag. A merger and acquisitions professor at UC Riverside told Al Jazeera that the tie up has “sound logic” behind it. A Columbia corporate law professor made a related point to CNBC: a single company could ease the long running worry about which business gets Musk’s time and resources.
Tesla valuation vs SpaceX valuation right now
Before getting into who wins and who loses, it helps to see the two companies side by side.
Market value in trillions of dollars
Tesla and SpaceX values reflect the October 22, 2026 close. The dashed bar is an analyst estimate, not a market price.
SpaceX by the numbers
SpaceX came into this week with momentum. Third quarter revenue reached about $14.6 billion, up 161 percent from a year earlier, and it posted its first quarterly profit as a public company with earnings of 35 cents per share against estimates in the low teens. The surprise driver was its “Super Intelligence” segment, the old xAI business, which brought in $7.6 billion, more than nine times last year’s figure. Starlink and the rest of connectivity added $5.2 billion, up 69 percent, while the actual rocket business grew only 6 percent to $1.8 billion. Musk also floated an annual recurring revenue goal of $500 billion to $1 trillion by the end of 2027, which is a target, not a forecast you should bank on.
Tesla by the numbers
Tesla’s third quarter, reported Wednesday, was a mixed bag. Revenue was about $28.05 billion, flat from a year ago. Adjusted earnings came in at 48 cents per share, beating the 44 cent estimate, but GAAP net income dropped 43 percent to $787 million. The company holds about $45.4 billion in cash and investments and plans to spend more than $25 billion this year as it pushes into robotaxis, Optimus and chips.
Here is the uncomfortable part. Depending on how you count earnings, Tesla trades somewhere between 200 and 600 times profits. Fortune estimated a P/E above 600 once you strip out regulatory credits and gains on its SpaceX stake. Short seller Steve Eisman told the same outlet that hopes of a full price buyout are a big reason the stock holds up at all. That is a fair warning: some of Tesla’s current price may already be a merger bet.
The exchange ratio: where this deal will really be fought
Most coverage stops at “combined company worth $3.5 trillion.” The more useful question is how many SpaceX shares each Tesla share would turn into, because that single number decides who wins.
Dan Ives of Yorkville Ives told CBS News that Tesla holders would want a real premium, with an offer “likely in the $500/$550 per share range” to win the vote. Using SpaceX’s $144.75 close and a Tesla reference price of about $380, here is what different offers would look like. This is our own back of the envelope math, using share counts implied by market value, so treat it as a rough guide.
| Offer for each TSLA share | Premium | SPCX shares per TSLA share | Extra value paid to Tesla holders | Tesla holders’ slice of combined company |
|---|---|---|---|---|
| $380 (no premium) | 0% | 2.63 | $0 | ~44% |
| $456 | 20% | 3.15 | ~$300B | ~48% |
| $500 (Ives low end) | 32% | 3.45 | ~$475B | ~50% |
| $550 (Ives high end) | 45% | 3.80 | ~$670B | ~53% |
Look at the last column. At no premium, SpaceX holders keep the majority of the combined business. At the price Ives thinks Tesla holders will demand, Tesla holders end up owning more than half of it, even though SpaceX is the bigger company. That is why the special committees matter so much: a few dimes on the exchange ratio move hundreds of billions of dollars between two groups of investors.
One more thing jumped out when we ran the numbers. Musk owns just under half of SpaceX economically and about a fifth of Tesla. Blend those together and his economic stake in the combined company lands at roughly a third in every scenario above. His voting power, thanks to supervoting shares, would be well above that. In plain terms, he gains control without needing to buy more stock.
How the merger would affect Tesla stock and TSLA shareholders
For Tesla holders, the deal is mostly about price and a floor.
- A premium is the reward. If the committees land anywhere near the Ives range, TSLA holders would lock in a gain of 30 percent or more on paper, paid in SpaceX stock.
- The stock would start trading as a shadow of SPCX. Once terms are signed, TSLA would mostly move with SpaceX multiplied by the exchange ratio, minus a small gap that reflects the risk the deal fails. Tesla’s own earnings would matter less day to day.
- You give up your vote on Musk. Today, Tesla shareholders can push back on pay packages and board decisions. Inside a combined company with supervoting shares, that leverage shrinks a lot.
- Downside if talks collapse. If part of TSLA’s price is merger hope, as Eisman argues, a failed deal could hit the stock hard. Needham has already said the merger chatter may limit how high Tesla can climb on its own results.
The vote itself is a genuine obstacle. Musk said Tesla needs approval from a majority of all outstanding shares, not just shares that show up to vote, calling it “quite a high hurdle.” Retail investors who never return their ballot effectively count as a no. Tesla’s base has backed Musk before, but turnout will matter as much as sentiment.
How the merger would affect SpaceX stock and SPCX shareholders
SpaceX holders face the opposite trade. They get Tesla’s factories, energy business, cash pile and robotics ambitions, but they pay for it with a mountain of new shares.
Fortune worked out that SpaceX would need to issue roughly 92 percent of its current share count, taking it from about 13.1 billion to around 25 billion shares. Because Tesla earns so little relative to its price, the outlet calculated SpaceX would be paying about “$600 for every $1 in extra earnings.” A piece from The Motley Fool went further and argued the merger could be a disaster for SpaceX holders.
The counterargument is that SpaceX buyers are not paying for today’s earnings anyway. They are paying for Starlink, AI compute and a future where rockets carry data centers into orbit. If Tesla supplies the chips, the batteries and the manufacturing muscle for that plan, the combined story could be stronger than either piece alone. That is the bet bulls are making.
Practically, SPCX holders have far less say than Tesla holders. Musk’s voting control at SpaceX means the outcome on that side is largely in his hands, filtered through the independent committee.
The hurdles that could kill or delay the deal
- China. Tesla runs major factories in China, while SpaceX is deeply tied to US defense and space contracts. Analysts expect regulators on both sides to take a hard look.
- Governance. Musk sits on both sides of the table. Expect lawsuits, fairness opinions and heavy scrutiny of the committee process, especially given Tesla’s history with its SolarCity acquisition.
- Political noise. A Wall Street Journal report this week about a slowdown of a military version of Starlink is a reminder that SpaceX carries government sensitivities Tesla never had.
- Timing. Even optimists talk in years, not weeks. Gene Munster of Deepwater puts the odds near 95 percent within two years, and Ives sees 80 to 90 percent odds by the end of 2027.
Our take: what this merger could mean for both companies
We think the strategic case is real. Tesla needs cheap chips and a home for its AI spending. SpaceX needs manufacturing scale, power storage and a second giant cash engine to fund Starship and orbital compute. Terafab already ties them together, and running one chip program across two boards with two sets of shareholders is clumsy. Combining them removes that friction.
Where we get more cautious is price and power. A merger at a big premium shifts hundreds of billions of dollars of value toward Tesla holders while diluting SpaceX holders, and a merger at no premium probably fails the Tesla vote. The likely landing spot, in our view, is somewhere in the middle: a 20 to 35 percent premium paid entirely in SpaceX stock. Either way, Tesla shareholders give up meaningful influence over Musk, and that cost will not show up in any press release.
So our honest read: good idea strategically, fair only if the exchange ratio is fair, and a big governance trade for Tesla holders that deserves more attention than it is getting.
Potential stock moves if the merger closes
Nobody knows how a $3 trillion plus combination will trade, because nothing this size has ever happened. Here is how we are thinking about it in stages.
From announcement to closing
History suggests buyers often dip when a large stock deal is announced, while the target jumps toward the offer. If a deal is signed, we would expect SPCX to wobble on dilution worries and TSLA to snap toward its implied deal value, then trade at a small discount to it until the vote. That gap is where merger arbitrage traders live, and it tends to widen sharply any time a regulator or lawsuit makes headlines.
Once the deal is done
TSLA stops trading and every Tesla share becomes SpaceX stock. Index funds that tracked Tesla will need to adjust, which can create heavy volume and short term volatility around the closing date. From there, three paths look plausible to us:
Bull case: the AI story wins
Investors buy the idea of one company that makes chips, robots, cars, batteries and the satellites to connect them. Terafab hits its milestones, robotaxi revenue starts to show up, and the combined company rerates toward the $4 to $5 trillion range analysts like Ives describe.
Base case: roughly the sum of the parts
The combined company trades close to the value of the two separate pieces, around $3.4 to $3.7 trillion, with a choppy few months as Tesla holders who never wanted a space stock sell and SpaceX fans who wanted no car exposure do the same. This is the outcome we think is most likely in the first year.
Bear case: a conglomerate discount
Markets often value sprawling companies below the sum of their parts, especially when one person controls the votes. Add heavy dilution, regulatory friction in China and continued thin earnings, and the combined stock could trade meaningfully below today’s $3.4 trillion.
Our personal lean is a “sell the news” dip around closing, followed by a long stretch where the stock moves on execution: Terafab chip milestones, Starlink growth and whether robotaxis and Optimus turn into real revenue. Options traders should expect elevated implied volatility in both tickers whenever committee news, filings or vote dates land.
What to watch next
- Any announcement of agreed terms and the exchange ratio from the special committees.
- The merger proxy filing, which will include fairness opinions and the vote date.
- Regulatory signals out of Washington and Beijing.
- SpaceX share price behavior after this week’s lockup expiration, since the exchange ratio is tied to it.
- Terafab’s first test chip, expected around mid 2027.
Tesla and SpaceX merger FAQ
Are Tesla and SpaceX officially merging?
Not yet. Both companies formed special committees to explore a deal, but no terms are agreed and Musk himself said a merger is not a sure thing.
What happens to my TSLA shares if the merger goes through?
In the most likely structure, each Tesla share would be converted into a fixed number of SpaceX shares. Your position would show up as SPCX in your brokerage account and TSLA would stop trading.
Will Tesla shareholders get a premium?
Probably, if the deal is going to pass. Analysts like Dan Ives think an offer in the $500 to $550 range may be needed, though the committees could settle anywhere.
Can SpaceX shareholders block the deal?
Realistically, no. Musk controls more than 80 percent of SpaceX voting power, so the key vote happens on the Tesla side.
When could the merger close?
There is no timeline yet. Analyst estimates range from late 2027 to within two years, and regulatory reviews could stretch that further.
Sources and further reading
- CNBC: SpaceX and Tesla merger chatter after earnings
- CNBC: SpaceX third quarter live updates
- Fortune: Musk’s dream merger and SpaceX shareholders
- CBS News: Why Musk thinks a merger is a good idea
- The Motley Fool: Why a merger with Tesla could hurt SpaceX
- Electrek: Tesla Q3 2026 financial results
- Benzinga: Analysts react to Tesla earnings and merger talk
- Al Jazeera: SpaceX and Tesla exploring the largest merger in history
- South China Morning Post: Musk on combining the companies
- Arise News: Musk says the merger has merit
- Khaleej Times (Reuters): Terafab timeline and ownership
This article is for education and entertainment only and is not financial, legal or tax advice. We are not financial advisors. Numbers are rounded and based on public reporting as of October 23, 2026, and the scenario table reflects our own estimates. Do your own research and consider talking to a licensed professional before making investment decisions.