Technology & Business1980–2025
Most Valuable Public Companies
Forty-five years of the world's biggest companies by market value, from AT&T and IBM through Japan's bubble-era giants to today's AI-fueled trillion-dollar club. Watch NTT dwarf everything in 1987, Microsoft rule the dot-com peak, and Nvidia rocket from obscurity to #1.
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Source: Public market data (Bloomberg, CRSP, company filings) Year-end market caps; pre-2000 figures are year-end estimates converted to USD. Updated 2026-07-03