Czech Koruna Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, October 19th, 2026
1 Day
5.19%
decreased by 0.08%
1 Week
5.23%
decreased by 0.04%
1 Month
5.39%
increased by 0.12%
Analysis last updated: Sunday, October 18, 2026 at 03:14 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 19, 1993 to Oct 16, 2026Model Insight
With persistence 0.995, volatility shocks have a half-life of 142 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 ~142 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.1801 | 8.98*** |
| αARCH | 0.0348 | 5.92*** |
| βGARCH | 0.9603 | 144.47*** |
Spline Coefficients
K=1
| γ1 | 0.0001 | 1.31 |
0.995
Persistence142d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1801 | 8.98*** |
α ARCH Response to squared shocks | 0.0348 | 5.92*** |
β GARCH Volatility persistence | 0.9603 | 144.47*** |
Spline Coefficients
K=1
| γ1 | 0.0001 | 1.31 |
Persistence:
0.995
Half-life:
142 days
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