SpaceX shares have done what few expected so soon after its record initial public offering. They climbed past Taiwan Semiconductor Manufacturing. The rocket company now sits among the half-dozen most valuable public enterprises on the planet.
Its market capitalization touched $2.6 trillion this week. That figure comes after a surge of nearly $1 trillion in value during the first few trading sessions. Short, sharp gains. Then longer stretches of volatile swings that left analysts scrambling for explanations.
The debut priced shares at $135. It raised $75 billion. Valuation started near $1.8 trillion. Yet demand proved insatiable. By the close of its first full day the stock had jumped 19 percent. It kept climbing. The New York Times reported double-digit percentage gains on Monday followed by a 4.8 percent increase on Tuesday. SpaceX briefly topped Amazon and even Microsoft before settling back.
But. Compare the businesses. Taiwan Semiconductor generated $35.9 billion in sales and $18.2 billion in net income during its most recent quarter alone. SpaceX posted $18.67 billion in full-year 2025 revenue and a $4.94 billion net loss. The contrast could hardly be starker. One produces the physical chips that power the global economy. The other launches rockets, operates a satellite constellation and now folds in artificial-intelligence ambitions through its earlier merger with xAI.
Reuters detailed the IPO mechanics early on. The company sold 555.6 million shares. It targeted a $1.75 trillion valuation at pricing. The deal merged SpaceX with Elon Musk’s xAI startup, assigning the rocket business a $1 trillion value and the AI venture $250 billion. Morningstar had pegged the fair value at $780 billion just weeks before. That placed it 48 percent below the IPO target. Still investors piled in.
The Motley Fool laid out the tension in stark terms on the very day the comparison became unavoidable. SpaceX’s market cap had breached $2.5 trillion and overtaken TSMC to rank sixth globally behind Nvidia, Alphabet, Apple, Microsoft and Amazon. Its 2025 results showed the $18.67 billion top line and $4.94 billion loss. TSMC, by contrast, printed quarterly profits that dwarf SpaceX’s annual revenue. The Motley Fool noted the stock closed at $192.50 after its early sessions, a 43 percent pop from the offering price. By June 18 it had pulled back to $174.88, down 8.83 percent that day while TSMC rose 5.07 percent to $454.04.
Why the frenzy? Small float. Only about 5 percent of shares became available after the $75 billion raise plus an additional $10.7 billion tranche. Early investors and employees hold the rest. Lockups will ease over time. Some sales could reach 20 to 30 percent of holdings after the first earnings report expected in late June or early August. Until then scarcity feeds the price.
Hope does the rest. Starlink satellite internet remains the proven cash generator. Growth there has slowed. The real excitement centers on artificial intelligence. The xAI merger brought Musk’s Grok chatbot and related ambitions inside the public company. Analysts project explosive expansion. Morgan Stanley sees $330 billion in total revenue by 2030 with $190 billion from AI. Goldman Sachs goes higher at $470 billion. Musk himself has talked of $1 trillion in 2031.
Even more speculative bets have surfaced. SpaceX’s S-1 filing highlighted reusable rockets as the foundation for orbital data centers. Massive satellite constellations could deliver AI compute in space. The economics sound distant. Execution would need to be flawless. Yet the market has assigned a premium that assumes success across multiple frontiers at once.
TSMC faces its own pressures. Geopolitical risks around Taiwan. Enormous capital spending plans to chase AI chip demand. It raised its 2026 outlook earlier this year on sustained artificial-intelligence orders. Its stock has climbed steadily for years on the strength of its foundry dominance and consistent profitability. No one questions its business model. The same cannot be said for SpaceX.
CFRA launched coverage with a sell rating and $115 target. Morningstar called the stock overvalued at $63 per share. NewStreet Research took a more bullish stance at $165. The dispersion reveals deep uncertainty. One company earns real money today. The other burns cash at a $2.5 billion quarterly clip with an accumulated deficit above $41 billion. Its price-to-revenue multiple at IPO hovered near 94 times trailing figures. Peers offer little guidance. Rocket Lab trades at even richer multiples on smaller scale. Tesla, another Musk venture, sits far lower.
And yet. The post-IPO pop made Musk the world’s first trillionaire. Roughly 4,400 current and former employees became millionaires. About 400 turned into centimillionaires. The wealth creation is real. So is the scrutiny that comes with public markets. First-quarter 2026 results showed a $4.28 billion GAAP net loss. The stock has already given back some ground this week. Tuesday’s close left it around $2.5 trillion before further swings.
SpaceX now weighs whether to pursue an all-stock acquisition of Cursor, an AI coding startup, for $60 billion. The New York Times noted the deal would use its elevated currency just days after listing. Such moves underscore management’s confidence. They also stretch the balance sheet further into speculative territory.
Investors face a choice. Those with high tolerance for risk may see the AI and space bets as worth the current price. Most, the Motley Fool suggested, should wait. More shares will enter the market. Earnings will arrive. Orbital data-center plans need concrete proof before they justify today’s valuation. TSMC, for all its challenges, offers a clearer path with tangible profits and a dominant position in the semiconductor supply chain that underpins the very AI boom SpaceX hopes to join from orbit.
The gap between the two companies captures a broader market mood. One trades on demonstrated earnings power and manufacturing scale. The other sells a vision of reusable rockets ferrying compute platforms into space while satellites beam internet to every corner of Earth and AI models rewrite software from the heavens. Both stories contain truth. Only one has delivered consistent profits so far.
Volatility will likely continue. SpaceX shares dropped nearly 9 percent on June 18 alone, shedding substantial value in hours. TSMC advanced. The see-saw reflects shifting sentiment rather than sudden changes in either business. Long-term believers point to Musk’s track record of turning ambitious targets into operational realities. Skeptics note the accumulated losses, cash burn and the enormous leap required to meet those 2030 forecasts.
So the question lingers. Has the market gotten ahead of itself? Or does SpaceX’s rapid ascent signal that investors now price futuristic capabilities as aggressively as today’s foundry output? The coming quarters will test which view holds. For now the scoreboard favors the rocket company on pure market value. Whether that ranking proves sustainable remains the harder puzzle.
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