US Dollar / Czech Koruna: a 3.0σ rise on 23 September 2026
Recorded 7 October 2026On 23 September 2026 US Dollar / Czech Koruna rose 0.85% close to close, 3.0 times its typical daily move of 0.28% over the 20 sessions before it: its largest move since 19 August 2026. 30 other instruments of the 198 measured that day moved 2σ or more.
The day
Daily closes, as recorded the night after
- Move
- +0.85%
- Size
- +3.0σ
- Typical day before it
- 0.28%
- Close
- 21.4434
- Previous close, 22 September 2026
- 21.2632
- Since, to 23 October 2026
- +0.82%
US Dollar / Czech Koruna, the 30 sessions to 23 September 2026
Daily closes; the last point is the quake
Show values
| Point | USD/CZK |
|---|---|
| 12 Aug 2026 | 21.01 |
| 13 Aug 2026 | 20.98 |
| 16 Aug 2026 | 20.90 |
| 17 Aug 2026 | 20.86 |
| 18 Aug 2026 | 20.88 |
| 19 Aug 2026 | 20.67 |
| 20 Aug 2026 | 20.64 |
| 23 Aug 2026 | 20.62 |
| 24 Aug 2026 | 20.65 |
| 25 Aug 2026 | 20.62 |
| 26 Aug 2026 | 20.70 |
| 27 Aug 2026 | 20.69 |
| 30 Aug 2026 | 20.81 |
| 31 Aug 2026 | 20.77 |
| 1 Sep 2026 | 20.85 |
| 2 Sep 2026 | 20.87 |
| 3 Sep 2026 | 20.78 |
| 6 Sep 2026 | 20.82 |
| 7 Sep 2026 | 20.80 |
| 8 Sep 2026 | 20.80 |
| 9 Sep 2026 | 20.85 |
| 10 Sep 2026 | 20.87 |
| 13 Sep 2026 | 20.89 |
| 14 Sep 2026 | 20.99 |
| 15 Sep 2026 | 21.03 |
| 16 Sep 2026 | 21.19 |
| 17 Sep 2026 | 21.17 |
| 20 Sep 2026 | 21.19 |
| 21 Sep 2026 | 21.19 |
| 22 Sep 2026 | 21.26 |
| 23 Sep 2026 | 21.44 |
The same day
Other quakes on 23 September 2026
| Instrument | Move | Size |
|---|---|---|
| McDonald's MCD | −4.81% | −4.2σ |
| US Dollar / Mexican Peso USD/MXN | +1.48% | +4.2σ |
| US Dollar / Colombian Peso USD/COP | +2.43% | +3.6σ |
| 10-Year T-Note Futures ZN | −0.91% | −3.5σ |
| US 10-Year Treasury Yield US10Y | +2.94% | +3.5σ |
| 30-Year T-Bond Futures ZB | −1.51% | −3.3σ |
| Australian Dollar / US Dollar AUD/USD | −1.10% | −3.3σ |
| US 5-Year Treasury Yield US5Y | +3.20% | +3.3σ |
| Australian Dollar / Canadian Dollar AUD/CAD | −0.81% | −3.2σ |
| British Pound / US Dollar GBP/USD | −0.76% | −3.1σ |
| US 30-Year Treasury Yield US30Y | +1.85% | +3.0σ |
| US Dollar / Polish Zloty USD/PLN | +1.24% | +3.0σ |
US Dollar / Czech Koruna's other quakes
On record, newest first
- 19 August 2026: −0.99%, −3.4σ
How it is measured
The move is the close-to-close return; its size is that return divided by the standard deviation of US Dollar / Czech Koruna'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 US Dollar / Czech Koruna'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.