V-Lab
Goldcrest Co Ltd Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, July 28th, 2026
1 Day
22.36%
increased by 0.33%
1 Week
23.02%
increased by 0.99%
1 Month
24.43%
increased by 2.40%
Analysis last updated: Tuesday, July 28, 2026 at 07:51 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 14, 1998 to Jul 24, 2026Model Insight
This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 7 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.4205 | 8.03*** |
α ARCH Response to squared shocks | 0.1039 | 5.64*** |
β GARCH Volatility persistence | 0.7985 | 24.17*** |
Spline Coefficients
K=4
| γ1 | 0.0342 | 3.89*** |
| γ2 | -0.0462 | -3.43*** |
| γ3 | 0.0158 | 1.55 |
| γ4 | 0.0007 | 0.09 |
Persistence:
0.902
Half-life:
7 days
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