Nikkei 225: a 3.5σ fall on 15 October 2026
Recorded 17 October 2026On 15 October 2026 Nikkei 225 fell 4.90% close to close, 3.5 times its typical daily move of 1.40% over the 20 sessions before it: larger than every one of the 61 sessions on record before it. 26 other instruments of the 197 measured that day moved 2σ or more.
The day
Daily closes, as recorded the night after
- Move
- −4.90%
- Size
- −3.5σ
- Typical day before it
- 1.40%
- Close
- 64,425.95
- Previous close, 14 October 2026
- 67,744.29
- Since, to 21 October 2026
- +0.30%
Nikkei 225, the 30 sessions to 15 October 2026
Daily closes; the last point is the quake
Show values
| Point | NIKKEI |
|---|---|
| 28 Aug 2026 | 66,406 |
| 31 Aug 2026 | 66,312 |
| 1 Sep 2026 | 66,215 |
| 2 Sep 2026 | 64,326 |
| 3 Sep 2026 | 64,214 |
| 4 Sep 2026 | 65,021 |
| 7 Sep 2026 | 66,400 |
| 8 Sep 2026 | 65,269 |
| 9 Sep 2026 | 65,143 |
| 10 Sep 2026 | 65,271 |
| 11 Sep 2026 | 64,011 |
| 14 Sep 2026 | 63,493 |
| 15 Sep 2026 | 63,484 |
| 16 Sep 2026 | 63,923 |
| 17 Sep 2026 | 64,136 |
| 18 Sep 2026 | 65,019 |
| 24 Sep 2026 | 65,514 |
| 25 Sep 2026 | 66,364 |
| 28 Sep 2026 | 65,878 |
| 29 Sep 2026 | 65,481 |
| 30 Sep 2026 | 66,754 |
| 1 Oct 2026 | 68,957 |
| 2 Oct 2026 | 68,309 |
| 5 Oct 2026 | 69,947 |
| 6 Oct 2026 | 70,684 |
| 7 Oct 2026 | 70,036 |
| 8 Oct 2026 | 69,042 |
| 9 Oct 2026 | 69,031 |
| 13 Oct 2026 | 67,778 |
| 14 Oct 2026 | 67,744 |
| 15 Oct 2026 | 64,426 |
The same day
Other quakes on 15 October 2026
| Instrument | Move | Size |
|---|---|---|
| Lean Hogs HOGS | −11.88% | −13.0σ |
| Australian Dollar / New Zealand Dollar AUD/NZD | −1.13% | −4.6σ |
| British Pound / Australian Dollar GBP/AUD | +1.19% | +3.9σ |
| Australian Dollar / Swiss Franc AUD/CHF | −1.33% | −3.8σ |
| KOSPI KOSPI | −7.57% | −3.6σ |
| Nike NKE | +5.21% | +3.6σ |
| Euro / Australian Dollar EUR/AUD | +1.03% | +3.5σ |
| Starbucks SBUX | +3.89% | +3.1σ |
| US Dollar / Turkish Lira USD/TRY | +0.24% | +3.1σ |
How it is measured
The move is the close-to-close return; its size is that return divided by the standard deviation of Nikkei 225's previous 20 daily returns. A quake is 3σ or more. This record was made the night after the day finished trading and has not been changed since. The live chart is on Nikkei 225's page; the last few months of every market's daily moves are on the volatility terrain, and every quake on record is in the quake archive.