SpaceX’s proposed $75 billion IPO would be among the largest in history, but for crypto watchers the more interesting number is 18,712, the company’s Bitcoin stash that would suddenly land in public markets alongside Elon Musk’s other holdings.
The aerospace company disclosed in an SEC filing that it plans to sell 555.6 million shares at $135 apiece, valuing the rocket and Starlink satellite business at roughly $1.75 trillion. If completed at that size, the deal would dwarf Saudi Aramco’s 2019 debut and rank as the largest IPO ever. But the filing also confirmed something the crypto market had suspected for years: SpaceX has been quietly stacking sats, and the stack is substantial.
As of March 31, SpaceX’s treasury held 18,712 BTC at a fair value of $1.29 billion. That puts the company in the upper tier of known corporate holders, though still behind Strategy’s aggressive accumulation and Musk’s other public company, Tesla, which holds more than 11,500 BTC. The listing would convert those coins from private-company balance sheet curiosity into tradeable exposure.
Indirect Bitcoin Exposure Through an Aerospace Stock
For investors who want bitcoin in their portfolio but don’t want to custody it themselves (or deal with the regulatory friction of a spot ETF), holding shares of a company with a substantial BTC treasury has become a roundabout alternative. Strategy pioneered this model, and its stock often trades at a premium to its bitcoin net asset value because of the embedded leverage and Michael Saylor’s public commitment to never sell.
SpaceX would offer a different flavor of the same trade. The $1.29 billion bitcoin position represents less than 0.1% of the proposed $1.75 trillion market cap, so nobody is buying SpaceX stock primarily for the crypto angle. But it does mean that every shareholder, from index funds to retail investors, gets indirect bitcoin exposure whether they want it or not. That’s a structural shift: passive money tracking mega-cap indexes will own bitcoin by proxy.
The filing didn’t specify SpaceX’s cost basis or when the purchases occurred. If the company bought at 2022 lows, the position could be significantly profitable. If it bought closer to the 2024 or 2025 peaks, the current fair value might mask an unrealized loss. The SEC filing only required disclosure of the March 31 fair value, not the acquisition history. Still, the company’s willingness to hold BTC on the balance sheet rather than convert it to dollars suggests at least a medium-term treasury thesis.
The Musk Concentration Question
Reports have circulated that Musk has explored combining SpaceX and Tesla into a single entity. No formal merger plan has been announced, but the possibility has drawn attention from analysts tracking corporate bitcoin holdings. Tesla’s 11,500 BTC plus SpaceX’s 18,712 BTC would create a combined treasury of more than 30,000 coins. At current prices around $69,000 per BTC, that’s roughly $2.1 billion in bitcoin under one corporate umbrella.
To put that in perspective, Strategy held approximately 531,000 BTC as of late May, worth roughly $37 billion. A merged Tesla-SpaceX wouldn’t challenge that dominance. But it would concentrate significant bitcoin exposure in a single publicly traded entity controlled by the world’s richest person, whose public statements have historically moved crypto prices.
The market mechanics are worth considering. If a merged entity continued Musk’s apparent bitcoin-holding philosophy (both companies have held rather than sold during rallies), it would remove more than 30,000 coins from potential sell pressure. On the other hand, if a merged entity decided to liquidate its position, perhaps to fund Mars colonization or another capital-intensive project, the sale would be large enough to register on order books. Neither scenario is imminent, but the IPO makes the structure relevant.
Liquidity Competition: Tech IPOs vs Crypto Capital
The more immediate concern for crypto market participants isn’t what SpaceX does with its bitcoin. It’s what SpaceX does to the pool of risk capital that might otherwise flow into digital assets.
SpaceX’s June listing is just one piece of a crowded calendar. OpenAI and Anthropic are both expected to raise significant funds by year-end, and combined with SpaceX the total demand for new risk capital could exceed $240 billion. That’s a meaningful chunk of the global appetite for high-growth, high-volatility assets.
Bitcoin and other digital assets compete directly for this capital. Institutional allocators who added crypto to their portfolios in 2024 and 2025 often did so by reallocating from technology stocks or venture-style bets. When Coinbase, Galaxy Digital, or crypto prime brokers like FalconX list publicly, they absorb capital that might have gone into spot bitcoin or ETH. When SpaceX and OpenAI list, they absorb capital that might have gone anywhere in the risk-on spectrum.
The math isn’t zero-sum in the long run, as economic growth can expand the total pool, but in the short run a $75 billion IPO requires $75 billion of buying. Some of that will come from new allocations, some from sales of existing positions. If even 5% of the capital rotating into SpaceX shares comes from bitcoin holdings, that’s $3.75 billion of sell pressure.
This dynamic has already shown up in recent ETF data. U.S. spot Bitcoin ETFs saw $2.26 billion in outflows over a recent two-week stretch as Treasury yields rose and risk appetite contracted. Adding a parade of mega-cap tech offerings to that environment could extend the outflow cycle.
The counterargument is that crypto has matured enough to attract dedicated capital that doesn’t simply rotate into the next hot trade. The Bitcoin ETF complex manages hundreds of billions in assets, and much of that is held by long-term allocators, pension funds, endowments, and family offices with multi-year horizons. These investors aren’t going to sell their BTC allocation to buy SpaceX on day one. But marginal flows, the new money deciding where to go next month, will face a richer menu of options.
Corporate Treasuries and the Conglomerate Model
SpaceX’s bitcoin position also raises a structural question about corporate treasury strategy. Strategy’s model treats bitcoin as a primary asset: the company issues debt and equity specifically to buy more BTC, and its stock price tracks bitcoin with embedded leverage. Tesla’s model has been more ambivalent, with the company holding bitcoin but not making it central to the equity story. SpaceX appears closer to Tesla’s approach, holding a significant position without making it the investment thesis.
If the IPO succeeds and SpaceX trades at a rich valuation regardless of its bitcoin holdings, other corporations may conclude that a bitcoin treasury is a nice-to-have rather than a must-have. The Strategy premium depends on scarcity and commitment: Saylor has built credibility by never selling (until the recent $2.5 million sale that broke a three-year streak). SpaceX doesn’t need that credibility because investors are buying rockets and satellites, not leveraged bitcoin exposure.
This could matter for the broader corporate adoption narrative. If SpaceX stock performs well, other companies might adopt a similar posture: hold some bitcoin as a treasury asset, but don’t build your equity story around it. That’s a more sustainable model than the Strategy approach, which requires constant capital-raising to fund new purchases. It’s also a less exciting model for bitcoin bulls who hoped corporate treasuries would create a perpetual bid.
The timeline is short. SpaceX is targeting a June listing, which means the order book will be filling within weeks. By summer, we’ll know whether the largest IPO in history can coexist with a crypto market still digesting its own structural changes, from ETF maturation to regulatory clarity under the new SEC chair. The $75 billion figure is the headline. The 18,712 BTC figure is the subplot. Both will be priced into the same risk-capital equation.
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The information here is not financial advice. Cryptocurrency investments are speculative and can result in loss. DYOR.
