V-Lab
CH Biotech R&D Co Ltd Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Wednesday, October 7th, 2026
1 Day
31.04%
increased by 2.54%
1 Week
33.09%
increased by 4.59%
1 Month
35.16%
increased by 6.66%
Analysis last updated: Wednesday, October 7, 2026 at 08:39 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jul 2, 2015 to Oct 2, 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 | 2.2303 | 3.77*** |
| αARCH | 0.2524 | 4.21*** |
| βGARCH | 0.4957 | 5.95*** |
Spline Coefficients
K=10
| γ1 | 2.4876 | 3.12*** |
| γ2 | -4.3512 | -3.66*** |
| γ3 | 3.4315 | 4.33*** |
| γ4 | -1.8532 | -2.89*** |
| γ5 | -0.0430 | -0.07 |
| γ6 | 0.0528 | 0.06 |
| γ7 | 0.8416 | 0.84 |
| γ8 | -1.1699 | -0.86 |
| γ9 | 1.2052 | 0.98 |
| γ10 | -0.8213 | -1.35 |
0.748
Persistence2d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.2303 | 3.77*** |
α ARCH Response to squared shocks | 0.2524 | 4.21*** |
β GARCH Volatility persistence | 0.4957 | 5.95*** |
Spline Coefficients
K=10
| γ1 | 2.4876 | 3.12*** |
| γ2 | -4.3512 | -3.66*** |
| γ3 | 3.4315 | 4.33*** |
| γ4 | -1.8532 | -2.89*** |
| γ5 | -0.0430 | -0.07 |
| γ6 | 0.0528 | 0.06 |
| γ7 | 0.8416 | 0.84 |
| γ8 | -1.1699 | -0.86 |
| γ9 | 1.2052 | 0.98 |
| γ10 | -0.8213 | -1.35 |
Persistence:
0.748
Half-life:
2 days
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