Bitcoin: a 3.4σ rise on 18 September 2026
Recorded 7 October 2026On 18 September 2026 Bitcoin rose 5.89% close to close, 3.4 times its typical daily move of 1.73% over the 20 sessions before it: its largest move since 21 August 2026. 30 other instruments of the 147 measured that day moved 2σ or more.
The day
Daily closes, as recorded the night after
- Move
- +5.89%
- Size
- +3.4σ
- Typical day before it
- 1.73%
- Close
- 80,901.46
- Previous close, 17 September 2026
- 76,403.77
- Since, to 23 October 2026
- +0.30%
Bitcoin, the 30 sessions to 18 September 2026
Daily closes; the last point is the quake
Show values
| Point | BTC |
|---|---|
| 19 Aug 2026 | 69,266 |
| 20 Aug 2026 | 73,033 |
| 21 Aug 2026 | 78,335 |
| 22 Aug 2026 | 77,083 |
| 23 Aug 2026 | 77,755 |
| 24 Aug 2026 | 78,964 |
| 25 Aug 2026 | 78,565 |
| 26 Aug 2026 | 79,027 |
| 27 Aug 2026 | 80,258 |
| 28 Aug 2026 | 77,830 |
| 29 Aug 2026 | 78,246 |
| 30 Aug 2026 | 77,668 |
| 31 Aug 2026 | 78,549 |
| 1 Sep 2026 | 77,404 |
| 2 Sep 2026 | 77,300 |
| 3 Sep 2026 | 81,272 |
| 4 Sep 2026 | 79,672 |
| 5 Sep 2026 | 79,824 |
| 6 Sep 2026 | 80,350 |
| 7 Sep 2026 | 79,116 |
| 8 Sep 2026 | 78,439 |
| 9 Sep 2026 | 78,260 |
| 10 Sep 2026 | 76,568 |
| 11 Sep 2026 | 77,174 |
| 12 Sep 2026 | 77,270 |
| 13 Sep 2026 | 76,838 |
| 14 Sep 2026 | 78,163 |
| 15 Sep 2026 | 75,613 |
| 16 Sep 2026 | 76,150 |
| 17 Sep 2026 | 76,404 |
| 18 Sep 2026 | 80,901 |
The same day
Other quakes on 18 September 2026
Bitcoin's other quakes
On record, newest first
- 21 September 2026: +6.73%, +3.1σ
- 21 August 2026: +7.26%, +3.5σ
- 19 August 2026: +7.09%, +6.2σ
How it is measured
The move is the close-to-close return; its size is that return divided by the standard deviation of Bitcoin'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 Bitcoin'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.