Microsoft’s $480 billion rally fuels a debate: financial nihilism or the true AI moat, finally coming into view?

The market seems to be in a "rip up the script every day" kind of mode, Steve Sosnick of Interactive Brokers told Fortune. Unless that changes tomorrow.

The top 3

  1. Current Top Three Most Valuable Tech Firms: As of July 2026, NVIDIA, Alphabet, and Apple are frequently cited as the top three most valuable tech companies globally by market capitalization, with Microsoft also consistently in the lead group.
  2. Microsoft's Trillion-Dollar Valuation Milestones: Microsoft first surpassed a $1 trillion market capitalization in 2019, reached $2 trillion in 2021, and achieved $3 trillion in early 2024.
  3. Companies Closest to the $3 Trillion Mark: NVIDIA, Apple, and Alphabet have all surpassed or are consistently hovering around the $3 trillion market capitalization mark, with NVIDIA briefly exceeding $5 trillion in mid-2025.

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