Amazon: a 3.2σ rise on 19 October 2026
Recorded 21 October 2026On 19 October 2026 Amazon rose 4.98% close to close, 3.2 times its typical daily move of 1.56% over the 20 sessions before it: its largest move since 31 July 2026. 0 other instruments of the 198 measured that day moved 2σ or more.
The day
Daily closes, as recorded the night after
- Move
- +4.98%
- Size
- +3.2σ
- Typical day before it
- 1.56%
- Close
- 262.45
- Previous close, 16 October 2026
- 250
- Since, to 21 October 2026
- −0.03%
Amazon, the 30 sessions to 19 October 2026
Daily closes; the last point is the quake
Show values
| Point | AMZN |
|---|---|
| 4 Sep 2026 | 258.5 |
| 8 Sep 2026 | 257.0 |
| 9 Sep 2026 | 252.4 |
| 10 Sep 2026 | 251.9 |
| 11 Sep 2026 | 256.8 |
| 14 Sep 2026 | 253.5 |
| 15 Sep 2026 | 248.4 |
| 16 Sep 2026 | 246.0 |
| 17 Sep 2026 | 251.2 |
| 18 Sep 2026 | 253.7 |
| 21 Sep 2026 | 258.5 |
| 22 Sep 2026 | 255.0 |
| 23 Sep 2026 | 249.3 |
| 24 Sep 2026 | 249.4 |
| 25 Sep 2026 | 249.7 |
| 28 Sep 2026 | 246.1 |
| 29 Sep 2026 | 246.7 |
| 30 Sep 2026 | 249.1 |
| 1 Oct 2026 | 248.2 |
| 2 Oct 2026 | 251.5 |
| 5 Oct 2026 | 251.4 |
| 6 Oct 2026 | 256.3 |
| 7 Oct 2026 | 259.9 |
| 8 Oct 2026 | 254.1 |
| 9 Oct 2026 | 262.4 |
| 12 Oct 2026 | 259.5 |
| 13 Oct 2026 | 258.6 |
| 14 Oct 2026 | 254.1 |
| 15 Oct 2026 | 254.8 |
| 16 Oct 2026 | 250.0 |
| 19 Oct 2026 | 262.5 |
The same day
Other quakes on 19 October 2026
No other instrument moved 3σ or more that day: this one moved on its own.
Amazon's other quakes
On record, newest first
- 31 July 2026: +15.32%, +8.4σ
- 23 July 2026: −4.57%, −3.0σ
How it is measured
The move is the close-to-close return; its size is that return divided by the standard deviation of Amazon'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 Amazon'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.