SpaceX IPO vs South Sea Bubble: $1.75T Valuation Reality Check

SpaceX IPO finally debuts on Nasdaq today. Priced at $135 per share, it raises roughly $75 billion with a valuation of $1.75 trillion—more than double Saudi Aramco’s record and the largest IPO in history. The market is cheering. Yet the louder the applause, the more one name surfaces: the South Sea Company, which whipped London into a frenzy before collapsing in 1720. Is SpaceX IPO a milestone ushering in humanity’s space age, or a second South Sea Company that simply puts a price on dreams? The answer lies in the gap between performance and valuation.

SpaceX IPO — The Largest Debut on Record

First, consider the scale. SpaceX IPO issues roughly 555.6 million shares at $135 each, raising about $75 billion—more than double Saudi Aramco’s 2019 offering of roughly $29.4 billion and, by any measure, the largest IPO in history. The implied valuation is approximately $1.75 trillion, eclipsing Tesla (≈$1.6 trillion) and ranking among the top seven U.S. companies by market capitalization. Bloomberg has reported that SpaceX has raised its target valuation above $2 trillion. Elon Musk will retain more than 82% of voting control after the listing.

What fuels the enthusiasm? Reusable rockets that have slashed launch costs, the Starlink satellite network connecting the globe, and the Mars narrative all converge. The broader story of a new space age is also explored in the Atomic Economy blog post The Age of Great Voyages and the Coming Space Age—and SpaceX’s IPO. Yet it is precisely this weight of narrative that invites skepticism.

SpaceX IPO: A Second South Sea Company? — The Shadow of 1720

Travel back three centuries. The South Sea Company was founded in Britain in 1711 and assumed a large portion of the national debt in exchange for exclusive trading rights with Spain’s South American colonies. The problem was that the promised monopoly trade barely materialized—Spain never opened its ports. Nevertheless, the share price soared from about £128 in early 1720 to nearly £1,000 by summer on nothing more than the promise of future riches from the New World.

The frenzy was amplified by sophisticated financial engineering. The company promoted a debt-for-equity swap that made both the firm and the government appear stronger as the stock rose—a self-reinforcing structure that inflated the bubble. Politicians and insiders cashed out first; the public, swept up later, was left holding the losses. Bubbles are always created by structure and magnified by psychology.

Pricing a Dream

The ending was brutal. The bubble burst in the autumn of 1720, and by year-end the shares had fallen back to the low £100s. Countless investors were ruined; even Isaac Newton, who discovered gravity, lost a fortune and reportedly remarked that he could “calculate the motion of heavenly bodies, but not the madness of people.” The lesson is clear: when price is driven by promise and narrative rather than earnings, it eventually succumbs to gravity. The European bubble lineage is examined in greater depth in Dutch Tulips and the South Sea Company—Europe’s Bubble History.

Points of Similarity — Narrative, Charisma, and FOMO

Three parallels stand out. First, price is anchored not in current profits but in future promises (Mars, a mega-constellation). Second, a charismatic figure—political patrons then, Musk’s vision now—pulls the market along. Third, FOMO among retail investors fuels demand for the largest offering on record. The grammar of overheating has changed little in three hundred years.

Yet SpaceX IPO Is Not the South Sea Company

Balance requires acknowledging the decisive differences. Unlike the South Sea Company, which conducted almost no actual trade, SpaceX generated $18.7 billion in 2025 revenue, up 33% from $14.1 billion the prior year. Starlink is the engine: $11.4 billion (61% of total revenue) with subscribers rising from one million in 2022 to over nine million by late 2025 and surpassing ten million in February 2026. On an EBITDA basis the segment produced roughly $8 billion in profit.

The technological moat is real. Reusable rockets deliver a cost advantage competitors struggle to match, and the satellite internet service operates in more than 160 countries. SpaceX is therefore neither a fraud nor a mirage; it is a company that demonstrably earns money. Simple equivalence with the South Sea Company is therefore overstated. The real question lies elsewhere.

The Real Risk — Not Performance, but Valuation

The danger is not that the company is fictitious, but that the price may have run too far ahead. Dividing the $1.75 trillion valuation by 2025 revenue of $18.7 billion yields a multiple of roughly 93×—well beyond conventional growth-stock benchmarks. Even though EBITDA is positive, GAAP net income showed a $4.9 billion loss in 2025, driven by heavy capital expenditure on satellites and infrastructure. In short, SpaceX IPO’s price tag is written against tomorrow’s Mars and mega-constellation ambitions, not today’s earnings.

The pattern is familiar. Narrative-driven pricing has repeatedly outrun fundamentals—in the dot-com bubble and, more recently, the AI rally. The grammar of that boundary is explored in AI Bubble vs Dot-Com Bubble—Overheating or Innovation?, while the mechanics of cascading selling when high valuations crack are examined in SaaSpocalypse—AI’s Three-Stage Sell-Off. The issue is not whether innovation exists, but how much of it has already been priced in.

Whether the gap narrows or widens will be revealed by three metrics. First, whether Starlink’s average revenue per user (ARPU) and pricing continue to rise—ARPU fell 18% between 2023 and 2025 before SpaceX raised monthly fees by up to $10 in May 2026. Second, whether the GAAP loss path leads to sustained profitability and whether the projected $5 billion in free cash flow materializes in 2026. Third, the schedule of post-IPO lock-up expirations together with competitive and regulatory developments. Convergence toward the valuation points to Scenario A; divergence points to Scenario C. Ultimately, SpaceX IPO’s truth will be written quarter by quarter in its earnings releases, not in its narrative.

SpaceX IPO Scenarios — Three Paths

Three plausible trajectories emerge for the largest IPO on record.

What Korean Investors Should Watch

To Korean investors, SpaceX IPO may appear to be an opportunity that cannot be missed. Yet the larger the offering, the more important it is to assess how much optimism is already embedded in the price. First, beware FOMO—the common thread running from the South Sea bubble to the dot-com bust. Second, avoid the sunk-cost trap: refusing to acknowledge losses only deepens exposure. Third, practice diversification and position sizing. Concentrating assets in a single narrative is rarely the wisest course in an era of bubbles. Tax-advantaged accounts can aid disciplined allocation; see the Ilconomy blog post Up to ₩2 Million Tax-Free in an ISA Account.

Further Reading

How markets react when highly valued assets move in tandem is placed in macroeconomic context in FOMC Rate Outlook and the Global & Korean Economy. The narrative origins of the space-age story continue in The Coming Space Age and SpaceX’s IPO.

📚 References

• CNBC — SpaceX, $1.77 Trillion Valuation, $135 IPO
• Morningstar — Six Charts from SpaceX’s S-1
• Fortune — The Growth Required to Justify the Valuation

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