Hang Seng: a 3.0σ fall on 22 October 2026
Recorded 24 October 2026On 22 October 2026 Hang Seng fell 3.03% close to close, 3.0 times its typical daily move of 1.01% over the 20 sessions before it: its largest move since 2 October 2026. 53 other instruments of the 199 measured that day moved 2σ or more.
The day
Daily closes, as recorded the night after
- Move
- −3.03%
- Size
- −3.0σ
- Typical day before it
- 1.01%
- Close
- 22,934.68
- Previous close, 21 October 2026
- 23,651.87
- Since, to 28 October 2026
- +0.70%
Hang Seng, the 30 sessions to 22 October 2026
Daily closes; the last point is the quake
Show values
| Point | HSI |
|---|---|
| 8 Sep 2026 | 25,317 |
| 9 Sep 2026 | 25,275 |
| 10 Sep 2026 | 24,954 |
| 11 Sep 2026 | 24,806 |
| 14 Sep 2026 | 24,918 |
| 15 Sep 2026 | 24,667 |
| 16 Sep 2026 | 24,714 |
| 17 Sep 2026 | 24,604 |
| 18 Sep 2026 | 24,751 |
| 21 Sep 2026 | 25,043 |
| 22 Sep 2026 | 25,088 |
| 23 Sep 2026 | 24,834 |
| 24 Sep 2026 | 24,761 |
| 25 Sep 2026 | 24,510 |
| 28 Sep 2026 | 24,643 |
| 29 Sep 2026 | 24,524 |
| 30 Sep 2026 | 24,613 |
| 2 Oct 2026 | 23,972 |
| 5 Oct 2026 | 24,040 |
| 6 Oct 2026 | 24,281 |
| 7 Oct 2026 | 24,131 |
| 8 Oct 2026 | 23,786 |
| 9 Oct 2026 | 24,211 |
| 12 Oct 2026 | 24,271 |
| 13 Oct 2026 | 24,345 |
| 14 Oct 2026 | 24,314 |
| 15 Oct 2026 | 24,063 |
| 16 Oct 2026 | 24,187 |
| 20 Oct 2026 | 23,868 |
| 21 Oct 2026 | 23,652 |
| 22 Oct 2026 | 22,935 |
The same day
Other quakes on 22 October 2026
| Instrument | Move | Size |
|---|---|---|
| US Dollar / Hong Kong Dollar USD/HKD | −0.13% | −12.9σ |
| 2-Year T-Note Futures ZT | +0.35% | +5.7σ |
| US 5-Year Treasury Yield US5Y | −4.10% | −5.2σ |
| 10-Year T-Note Futures ZN | +1.23% | +5.0σ |
| US 10-Year Treasury Yield US10Y | −3.75% | −4.8σ |
| Lockheed Martin LMT | +6.96% | +4.6σ |
| US Dollar / Japanese Yen USD/JPY | −1.04% | −3.8σ |
| 30-Year T-Bond Futures ZB | +2.10% | +3.7σ |
| ASML ASML | −6.93% | −3.6σ |
| US 30-Year Treasury Yield US30Y | −2.79% | −3.6σ |
| Euro / Japanese Yen EUR/JPY | −1.16% | −3.5σ |
| New Zealand Dollar / Japanese Yen NZD/JPY | −1.37% | −3.4σ |
| Euro / Polish Zloty EUR/PLN | +0.46% | +3.0σ |
Hang Seng's other quakes
On record, newest first
- 2 October 2026: −2.60%, −3.3σ
How it is measured
The move is the close-to-close return; its size is that return divided by the standard deviation of Hang Seng'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 Hang Seng'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.