Margins
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How SpaceX Turned a Private Valuation Into $561 Million of Public Profit
SpaceX booked a $561 million third-quarter gain from Elon Musk’s The Boring Company. That figure comes from an illiquid private funding markup and brings zero cash into SpaceX’s bank accounts.
How SpaceX Turned a Private Valuation Into $561 Million of Public Profit
SpaceX reported a $561 million investment gain from its stake in Elon Musk’s The Boring Company during the third quarter, and that gain pushed quarterly net income past $4 billion. Financial headlines treated the number as a real return on capital, and retail buyers read the report as proof of cash generation across Musk’s businesses. The third-quarter filing with the Securities and Exchange Commission tells a simpler story. Not one dollar of that $561 million entered a SpaceX bank account.
In 2017 Elon Musk founded The Boring Company inside SpaceX, and in 2018 he spun the tunneling business out and gave SpaceX a six percent equity stake in exchange for shop tools, engineers and corporate resources. Dilution from subsequent funding rounds reduced that holding to just over three percent. In September 2026 The Boring Company raised $3 billion in a private Series D round led by United Arab Emirates state investors to build underground loop tunnels in Dubai, and that private contract jumped the tunneling firm’s headline valuation from $5.7 billion to $23 billion. Under accounting rules covering related-party transactions, SpaceX marked up its illiquid shares to match that private deal price and ran $561 million directly through its public income statement.
A private funding round does not set a liquid market price. Series D investors buy preferred shares with downside protections and contract guarantees, but SpaceX holds older common equity that cannot be sold on an exchange to pay for rockets or server racks. During the third quarter SpaceX earned $2.79 billion from actual operations, and Starlink provided $2.37 billion of that total. The rocket division lost $7 million after Starship development costs, and the artificial intelligence unit generated $431 million in operating profit against $16.44 billion in quarterly capital spending. Over the first nine months of 2026 SpaceX brought in $13.1 billion in operating cash flow and spent $48.1 billion on physical equipment, leaving a $35 billion cash deficit funded by its June initial public offering.
The same distortion governs SpaceX’s $2 trillion stock-market valuation. Only five percent of SpaceX’s shares trade in the public float, and the price of the last few thousand shares traded on the Nasdaq sets the paper value for all 13.57 billion shares. If Elon Musk tried to sell his forty-five percent economic stake tomorrow, the price would collapse before a fraction of the stock cleared the market. Starlink is a profitable satellite utility worth $150 billion to $200 billion on its cash flow, and the rest of the company burns tens of billions of dollars in cash each year while sending $480 million to Tesla for battery packs and booking paper gains from sister firms.
Paper markups between sister companies are accounting entries, not investment returns.