V-Lab
Polish Zloty Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
5.56%
decreased by 0.11%
1 Week
5.64%
decreased by 0.03%
1 Month
5.95%
increased by 0.28%
Analysis last updated: Sunday, July 26, 2026 at 01:53 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Sep 1, 1993 to Jul 24, 2026Model Insight
With persistence 0.990, volatility shocks have a half-life of 71 trading days (~0.3 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
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.7879 | 6.03*** |
α ARCH Response to squared shocks | 0.0545 | 8.73*** |
β GARCH Volatility persistence | 0.9357 | 132.59*** |
Spline Coefficients
K=2
| γ1 | -0.0026 | -2.58*** |
| γ2 | 0.0033 | 2.63*** |
Persistence:
0.990
Half-life:
71 days
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