V-Lab
Cargills Ceylon PLC Spline-GARCH Volatility Analysis
Volatility prediction for Wednesday, August 5th, 2026
1 Day
24.14%
decreased by 1.07%
1 Week
26.40%
increased by 1.19%
1 Month
27.93%
increased by 2.72%
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
Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.8639 | 5.69*** |
α ARCH Response to squared shocks | 0.2357 | 5.83*** |
β GARCH Volatility persistence | 0.4071 | 5.92*** |
Spline Coefficients
K=7
| γ1 | -0.2167 | -1.91* |
| γ2 | 0.4784 | 2.93*** |
| γ3 | -0.3409 | -3.41*** |
| γ4 | 0.0698 | 0.69 |
| γ5 | 0.0984 | 0.95 |
| γ6 | -0.1808 | -1.75* |
| γ7 | 0.1817 | 1.50 |
Persistence:
0.643
Half-life:
2 days
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