The pros and cons investors will have to weigh if Tesla and SpaceX tie the knot

• Tesla and SpaceX are talking merger, putting Musk's biggest ambitions under one very big roof.
• The tricky part is figuring out which shareholders get a deal — and which ones get the baggage.
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Ok people, this thing could actually be for real. On the heels of long-percolating rumors, formal steps are now underway toward a potential merger of Tesla and SpaceX.

The two crown jewels of Elon Musk's trillionaire empire could eventually combine to create an EV-and-AI mega-conglomerate in what would be by far the biggest deal of all time.

The progress toward a deal comes at an interesting time for shareholders of both companies. Through Tuesday's close, Tesla shares were 24% below their late-2025 record high, as investors have grown less patient with slowing car sales and a still-unproven robotaxi business. SpaceX, meanwhile, had gained about 10% since IPOing in June. (Tesla rose 3% on Wednesday after the news, while SpaceX spiked 8%.)

That disconnect creates one of the merger's biggest questions: How should the deal be priced to fairly compensate both sides?

On one side, Tesla could gain a piece of SpaceX's hottest growth engines. SpaceX could gain scale and a broader AI-and-hardware platform. But both would inherit each other's risks as well.

Here's a full breakdown of the pros and cons for investors in both companies:

Tesla: A bigger claim on Musk's future

Pros

• Tesla shareholders would get direct exposure to businesses they currently can only admire from the sidelines: Starlink, rocket launches, and SpaceX's booming AI operation.
• It would add weight to Tesla's long-running "physical AI" pitch. Instead of just promising robotaxis and robots, Tesla could be part of a company that also controls satellites, computing, and AI models.
• The deal could further reduce Tesla's reliance on its auto business, which has become the least intriguing part of its valuation story. (Although the company is still dominating the EV space. More on that lower in the newsletter.)

Cons

• Tesla may be trying to buy its way into SpaceX just after earnings made shares more expensive.
• It would tie Tesla even more tightly to giant capital-spending plans.
• Tesla investors would have an even harder time knowing what they own. An automaker? Robotics company? AI giant? Satellite operator? All of the above?

SpaceX: Bigger financing power, but more baggage

Pros

• Tesla brings something SpaceX cannot easily replicate on its own: a highly liquid stock that could be flexible currency for acquisitions, fundraising, and Musk's increasingly expensive ambitions.
• SpaceX's xAI business could gain access to Tesla's enormous pool of real-world driving data and, eventually, data from autonomous cars and Optimus robots.
• Tesla's established auto and energy businesses could also give the combined company a steadier, more familiar revenue stream.

Cons

• SpaceX's clean, newly public growth story would be diluted by Tesla at a time when earnings look strong and its standalone trajectory is pointing higher.
• The rationale for the deal is focused more on future synergies that may never materialize, versus any clear cost-cutting opportunities in the near term.
• Rather than giving the combined stock a premium valuation, investors may instead apply a conglomerate discount.

Musk has never had much trouble selling investors on his biggest visions. The hardest part here will be convincing everyone that they're getting a fair price. And perhaps more than anything, SpaceX shareholders will want to feel like they're not being asked to bail out Tesla.

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