SpaceX has done in three days of public trading what most companies never accomplish in a lifetime: it has leapfrogged Amazon to become one of the largest public companies on earth. Shares of Elon Musk’s rocket builder climbed roughly 8% in early trading on Tuesday, June 16, lifting its market capitalization to approximately $2.84 trillion and pushing it past Amazon, which was valued at about $2.66 trillion. The move, reported by CNBC, cements one of the most explosive public market debuts in history and reorders the ranking of the world’s most valuable corporations almost overnight.
The rally is remarkable both for its speed and for the company at its center. SpaceX is not a software firm with near-zero marginal costs or a consumer platform with billions of users. It is a capital-intensive aerospace and satellite communications company that builds and launches rockets, operates the Starlink broadband constellation, and is pursuing some of the most ambitious engineering goals ever attempted. That a business of that nature could vault past Amazon within seventy-two hours of going public says as much about investor appetite for Musk’s vision as it does about the underlying financials.
A Debut That Keeps Accelerating
The Tuesday surge was not an isolated pop. It was the continuation of a rally that began the moment SpaceX shares started trading. The stock climbed 20% on Monday, its first full day of trading, and the roughly 8% gain on Tuesday built directly on top of that momentum. In the span of two sessions, investors have repriced the company upward by a margin that would represent a successful year for most large-cap stocks.
The ascent has carried SpaceX past a series of household names in rapid succession. Surpassing Amazon, long one of the five most valuable companies in the world, places SpaceX in rarefied company alongside the handful of trillion-dollar technology giants that dominate the major indexes. For a stock that only recently completed its initial public offering, the climb up the market cap leaderboard has been almost vertical.
That trajectory has been a recurring theme in the run-up to and aftermath of the listing. As we detailed in our coverage of the SpaceX IPO debut and its $1.75 trillion valuation, the offering itself was priced at a level few companies ever reach. The subsequent rally has pushed the valuation far beyond even those lofty expectations, validating the enthusiasm that drew institutional money into the deal, including the participation we reported when BlackRock committed $10 billion to the SpaceX IPO.
The Cursor Acquisition Adds Fuel
Tuesday’s gains coincided with a major strategic announcement. SpaceX said it would acquire Cursor, the popular artificial intelligence coding agent, in a deal valued at $60 billion. The acquisition signals that Musk intends to push SpaceX well beyond its aerospace roots and into the software and AI tooling that increasingly underpin every advanced engineering enterprise. Integrating a leading AI coding platform could accelerate development across the company’s rocket, satellite, and ground systems while giving SpaceX a foothold in one of the fastest-growing segments of the technology economy.
The move also fits a broader pattern of SpaceX weaving itself into the AI infrastructure buildout. We covered an early sign of that ambition when Anthropic and SpaceX announced a compute deal that included space-based development, an arrangement that hinted at how the company views the convergence of orbital infrastructure and artificial intelligence. The Cursor acquisition takes that thesis a large step further, bringing a software capability in-house rather than partnering for it.
Soaring Valuation, Real Losses
For all the exuberance, the financial picture beneath the stock carries genuine risk that investors are choosing to look past. SpaceX is not profitable. The company posted a net loss of $4.9 billion in 2025 and lost a further $4.28 billion in the first quarter of this year. Those are substantial figures, and they sit in stark contrast to the multitrillion-dollar valuation the market is now assigning the company.
The gap between the losses and the valuation is the central tension of the SpaceX story. Bulls argue that the company is investing aggressively in Starlink expansion, Starship development, and now AI tooling, and that today’s losses are the cost of building a generational franchise that will eventually generate enormous cash flow. Skeptics counter that a company valued near $2.84 trillion while burning billions each quarter has priced in years of flawless execution, leaving little room for the inevitable setbacks that accompany frontier engineering. Both positions can be true at once, which is why the stock has moved so violently in its first days.
The speed of the run-up also raises the question of sustainability. A valuation that expands by hundreds of billions of dollars in a matter of sessions can contract just as quickly if sentiment shifts. The same momentum that carried SpaceX past Amazon could reverse if quarterly results disappoint, if the Cursor integration proves difficult, or if the broader appetite for richly valued growth stocks cools. Investors buying at these levels are paying for a future that remains, for now, more vision than financial reality.
Why the Milestone Matters
Passing Amazon is more than a symbolic trophy. It marks the arrival of a privately founded space company at the very top of the public equity market, a place historically reserved for software platforms, chipmakers, and consumer technology giants. It signals that public investors are willing to assign software-style valuations to a hardware-intensive aerospace business, a shift that could reshape how capital flows to the next generation of frontier companies.
For the market as a whole, SpaceX’s debut has been a source of energy at a moment when investors were already leaning optimistic. The stock’s gains have helped lift broader indexes and reinforced a risk-on mood. Whether that enthusiasm proves durable will depend on the company’s ability to convert its towering valuation into the revenue and earnings that ultimately justify it. For now, SpaceX has rewritten the leaderboard, and Wall Street is watching to see how high the rocket can climb before gravity reasserts itself.
