Nikkei 225 · February 3, 2026
Tokyo followed Seoul
+3.92%
single-day change vs previous close
What happened that day?
- On 3 February 2026 the Nikkei 225 rose 3.92%
- The day before, the argument that AI prices had got expensive had pulled all of Asia down
- Japan's channel to Korea runs through chip equipment makers, whose customers are the Korean and Taiwanese fabs
- So when chip names turn in Seoul, Tokyo's equipment names turn the same day
- No single trigger can be pinned to this day
- In this stretch the index was 9.4% below its peak
- The same structure repeated with much larger falls that June and July
Sources
Every figure on this page is recomputed from the original daily closing prices and checked against them at build time. The account of what happened is written from the sources listed above.