V-Lab
Czech Koruna Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Wednesday, September 9th, 2026
1 Day
5.11%
decreased by 0.05%
1 Week
5.16%
decreased by 0.00%
1 Month
5.32%
increased by 0.16%
Analysis last updated: Tuesday, September 8, 2026 at 07:04 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 19, 1993 to Sep 4, 2026Model Insight
With persistence 0.995, volatility shocks have a half-life of 141 trading days (~0.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
High persistence: persistence 0.995, shock half-life ~141 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.1763 | 8.99*** |
| αARCH | 0.0349 | 5.91*** |
| βGARCH | 0.9602 | 143.65*** |
Spline Coefficients
K=1
| γ1 | 0.0001 | 1.27 |
0.995
Persistence141d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1763 | 8.99*** |
α ARCH Response to squared shocks | 0.0349 | 5.91*** |
β GARCH Volatility persistence | 0.9602 | 143.65*** |
Spline Coefficients
K=1
| γ1 | 0.0001 | 1.27 |
Persistence:
0.995
Half-life:
141 days
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