SpaceX's $2.4 trillion moonshot clears the math for a Tesla merger

SpaceX's historic public debut has done more than create the largest IPO in U.S. history — it has reshaped the arithmetic governing what could become the most consequential merger in corporate America. Every dollar the rocket company's stock gains makes it cheaper for Elon Musk to acquire Tesla using SpaceX equity, and the shares have gained 37% since listing.

"The convergence we're all trying to accomplish in the future might make Elon's life a little easier," Gwynne Shotwell, SpaceX's president and chief operating officer, said on CNBC on June 12 when asked about a potential tie-up. She did not dismiss the possibility.

SpaceX raised $85.7 billion in its June 12 IPO, the largest in U.S. history, pricing at $135 a share for a valuation of roughly $1.75 trillion. By the close on June 18, the stock had surged to $185, pushing the company's market capitalization to $2.44 trillion, according to exchange data. At that level, SpaceX could acquire Tesla — valued at approximately $1.5 trillion — by issuing 38% of its shares in an all-stock transaction, down from the 46% dilution that would have been required at the offer price.

The improving math arrives as Tesla's fundamentals deteriorate. The electric-vehicle maker posted just $3.4 billion in GAAP net earnings over the past four quarters, down from $15 billion in 2023 and $7 billion in 2024, according to financial filings. Its $1.5 trillion market capitalization now rests almost entirely on Musk's promises of future profits from robotaxis and humanoid robots — products that have yet to generate revenue and whose commercial launch dates continue to slip.

The Berkshire Hathaway of AI?

Musk has shown a clear preference for consolidation. He folded xAI into SpaceX in February, creating a combined platform spanning artificial intelligence, satellite communications, and aerospace. He exercised nearly 304 million Tesla options at $23.34 per share last week, raising his voting stake to 19.9% — moving closer to the 25% threshold he has said would provide enough influence to pursue Tesla's AI ambitions without shareholder opposition.

Wedbush analyst Dan Ives put the odds of a merger at 80%. Longtime Tesla investor Ross Gerber said the combination would advance Musk's vision of running a single conglomerate akin to a Berkshire Hathaway of AI-driven technology. Betting platform Kalshi showed odds of 54% that a deal would be announced by May 2027.

SpaceX's SEC filings detail growing operational overlap between the two companies. They are partnering on digital workflow development and jointly own the Terafab facility, which plans to produce one terawatt of compute hardware annually. Tesla also holds approximately $4 billion in SpaceX stock through its previous stake in xAI.

A $4 trillion conglomerate with negative earnings

A combined entity would command a market capitalization of roughly $4 trillion, making it the fourth-most-valuable U.S. company behind Nvidia, Alphabet, and Apple, and more than $1 trillion ahead of Amazon and Microsoft. Unlike those profit-generating giants, however, the merged company would report negative net income, as SpaceX's losses over the past four quarters more than offset Tesla's modest earnings.

SpaceX held approximately $100.8 billion in cash and cash equivalents as of June 19, according to a bond sale filing days after the IPO, giving it substantial financial flexibility. Yet the deal would saddle SpaceX shareholders with a struggling automotive business and a sprawling portfolio of robotaxis, energy storage, and robotics on top of the rocket, Starlink, and AI operations they already own.

The conglomerate structure Musk would be creating runs counter to a decades-long trend of corporate simplification. General Electric, Honeywell, and Johnson & Johnson have all broken themselves apart, arguing that focused businesses deliver better returns. Musk would be betting that his ability to manage disparate technologies — rockets, electric cars, satellites, and artificial intelligence — defies that logic.

Any transaction of this scale would face intense regulatory scrutiny. The Committee on Foreign Investment in the United States, the Federal Trade Commission, and the Justice Department would all likely review a merger combining two of the world's most valuable companies. Shareholder lawsuits challenging the deal's fairness to SpaceX minority holders are also probable.

For now, no merger has been announced. But with each tick higher in SpaceX's stock price, the financial case grows stronger — and the pressure on Musk to act grows with it.

This article is for informational purposes only and does not constitute investment advice.