V-Lab
Cargills Ceylon PLC Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Wednesday, August 5th, 2026
1 Day
21.97%
decreased by 1.14%
1 Week
23.74%
increased by 0.63%
1 Month
24.97%
increased by 1.86%
Analysis last updated: Wednesday, August 5, 2026 at 08:13 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 31, 1994 to Jul 31, 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 2 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.8673 | 5.69*** |
α ARCH Response to squared shocks | 0.2337 | 5.88*** |
β GARCH Volatility persistence | 0.4147 | 6.02*** |
Spline Coefficients
K=7
| γ1 | -0.2146 | -1.88* |
| γ2 | 0.4747 | 2.89*** |
| γ3 | -0.3389 | -3.39*** |
| γ4 | 0.0720 | 0.71 |
| γ5 | 0.0870 | 0.85 |
| γ6 | -0.1488 | -1.57 |
| γ7 | 0.0929 | 1.20 |
Persistence:
0.648
Half-life:
2 days
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