---
title: 'The Biggest Companies in the World by Market Cap (1980-2020)'
source: 'https://youtube.com/watch?v=jtlKSo7UCYA'
video_id: 'jtlKSo7UCYA'
date: 2026-07-14
duration_sec: 0
---

# The Biggest Companies in the World by Market Cap (1980-2020)

> Source: [The Biggest Companies in the World by Market Cap (1980-2020)](https://youtube.com/watch?v=jtlKSo7UCYA)

## Summary

This video traces the evolution of the world's largest companies by market capitalization from the 1980s to the present, highlighting the rise and fall of industrial giants, the Japanese bubble, and the dominance of American tech firms.

### Key Points

- **Early Leaders** [00:00] — AT&T and IBM were top in the early 1980s, reflecting the era's focus on telecommunications and computing.
- **Japanese Takeover** [00:15] — In the late 1980s, Japanese companies like NTT and banks surged to the top due to Japan's asset price bubble.
- **American Resurgence** [00:30] — After the Japanese bubble burst, American firms like General Electric and Microsoft regained dominance in the 1990s.
- **Tech Dominance** [00:45] — Microsoft, Apple, and other tech companies have consistently held top positions since the 2000s, with occasional appearances by oil and industrial firms.

### Conclusion

The list of the world's biggest companies reflects broader economic shifts, from industrial and telecom dominance to the Japanese bubble and the sustained rise of American technology giants.

## Transcript

These are the biggest companies in the world by market cap. You can see AT&T's at the top and then oh IBM takes over. I mean they make computers that makes a lot of sense in the '8s and then NT never heard of NT. Then it looks like a full Japanese takeover into the 80s and then it just completely falls apart. America's back on top. General Electric is right at the top and then Microsoft takes over and I guess they stay at the top forever and General Electric's back somehow. Microsoft coming back up in 2001. General Electric right at the top. Exxon Mobile. I didn't realize General Electric was such a big deal.