UOB-Kay Hian Holdings Ltd Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Thursday, October 29th, 2026
1 Day
45.98%
decreased by 1.29%
1 Week
41.56%
decreased by 5.71%
1 Month
34.22%
decreased by 13.05%
Analysis last updated: Friday, October 30, 2026 at 12:06 AM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 14, 1990 to Oct 23, 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 3 trading days.
τ
Zero Slope Spline-GARCH Model
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Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.5550 | 5.35*** |
| αARCH | 0.1871 | 8.25*** |
| βGARCH | 0.6300 | 16.20*** |
Spline Coefficients
K=10
| γ1 | -0.0334 | -0.57 |
| γ2 | 0.1185 | 1.35 |
| γ3 | -0.2370 | -4.17*** |
| γ4 | 0.3044 | 5.59*** |
| γ5 | -0.2243 | -4.27*** |
| γ6 | 0.0137 | 0.30 |
| γ7 | 0.1825 | 3.76*** |
| γ8 | -0.1794 | -3.53*** |
| γ9 | 0.0981 | 1.63 |
| γ10 | -0.0803 | -1.54 |
0.817
Persistence3d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.5550 | 5.35*** |
α ARCH Response to squared shocks | 0.1871 | 8.25*** |
β GARCH Volatility persistence | 0.6300 | 16.20*** |
Spline Coefficients
K=10
| γ1 | -0.0334 | -0.57 |
| γ2 | 0.1185 | 1.35 |
| γ3 | -0.2370 | -4.17*** |
| γ4 | 0.3044 | 5.59*** |
| γ5 | -0.2243 | -4.27*** |
| γ6 | 0.0137 | 0.30 |
| γ7 | 0.1825 | 3.76*** |
| γ8 | -0.1794 | -3.53*** |
| γ9 | 0.0981 | 1.63 |
| γ10 | -0.0803 | -1.54 |
Persistence:
0.817
Half-life:
3 days
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