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Four tech titans, SpaceX, Nvidia, Microsoft, and Tesla, each added more than $100 billion in market capitalization in a single trading session. When companies this large move in lockstep like that, it tells you something about the mood in the room. And the mood, apparently, was very good.
A synchronized surge of that magnitude across four separate companies implies hundreds of billions of dollars flowing into mega-cap tech in a matter of hours. To put it in perspective, $100 billion is roughly the entire market cap of companies like Starbucks or Goldman Sachs. Each of these four firms generated that much additional value before the closing bell.
The scale of what just happened
Nvidia has been the dominant force in the global market cap rankings, with a valuation that has climbed to approximately $5.42 trillion, making it the world’s most valuable public company. Microsoft sits at roughly $3.69 trillion. SpaceX, which completed the largest US IPO in history on June 12 when it raised approximately $75 billion at $135 per share, debuted with a market cap exceeding $2 trillion and has since fluctuated around $1.85 trillion. Tesla, meanwhile, carries a valuation near $1.41 trillion.
At those sizes, a $100 billion single-day gain translates to roughly a 1.8% move for Nvidia, a 2.7% move for Microsoft, a 5.4% move for SpaceX, and about a 7% jump for Tesla.
SpaceX’s wild ride as a public company
When SpaceX went public in June, it priced at $135 per share. Shares rose approximately 19-20% on the first day alone, a debut that briefly made Elon Musk the world’s first trillionaire given his estimated 38-50% stake in the company. In the days that followed, SpaceX shares hit intraday highs near $225, pushing the company’s valuation above $2.6 trillion and temporarily vaulting it ahead of both Amazon and Microsoft.
For context, SpaceX’s IPO raised more capital than any previous US listing. The $75 billion haul dwarfed prior records and signaled a shift in how the market values space-economy companies.
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