V-Lab
Tate & Lyle Plc Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 15th, 2026
1 Day
31.01%
increased by 0.21%
1 Week
34.89%
increased by 4.09%
1 Month
38.52%
increased by 7.72%
Analysis last updated: Wednesday, September 16, 2026 at 06:13 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Aug 3, 2010 to Sep 10, 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
Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.9753 | 7.00*** |
| αARCH | 0.1942 | 5.65*** |
| βGARCH | 0.5481 | 7.67*** |
Spline Coefficients
K=9
| γ1 | -0.0804 | -0.43 |
| γ2 | 0.3431 | 1.19 |
| γ3 | -0.5649 | -2.92*** |
| γ4 | 0.3733 | 1.95* |
| γ5 | -0.0154 | -0.08 |
| γ6 | -0.0002 | 0.00 |
| γ7 | -0.2730 | -1.08 |
| γ8 | 0.5166 | 2.27** |
| γ9 | -0.4497 | -3.20*** |
0.742
Persistence2d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.9753 | 7.00*** |
α ARCH Response to squared shocks | 0.1942 | 5.65*** |
β GARCH Volatility persistence | 0.5481 | 7.67*** |
Spline Coefficients
K=9
| γ1 | -0.0804 | -0.43 |
| γ2 | 0.3431 | 1.19 |
| γ3 | -0.5649 | -2.92*** |
| γ4 | 0.3733 | 1.95* |
| γ5 | -0.0154 | -0.08 |
| γ6 | -0.0002 | 0.00 |
| γ7 | -0.2730 | -1.08 |
| γ8 | 0.5166 | 2.27** |
| γ9 | -0.4497 | -3.20*** |
Persistence:
0.742
Half-life:
2 days
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