V-Lab
Inner Mongolia Shuangxin Environment-Friendly Material Co Ltd Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
20.06%
increased by 0.11%
1 Week
20.02%
increased by 0.07%
1 Month
19.99%
increased by 0.04%
Analysis last updated: Saturday, September 19, 2026 at 07:13 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 30, 2025 to Sep 18, 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 | 1.7838 | 1.30 |
| αARCH | 0.0031 | 0.06 |
| βGARCH | 0.6934 | 1.52 |
Spline Coefficients
K=6
| γ1 | 534.9668 | 4.18*** |
| γ2 | -835.9644 | -4.82*** |
| γ3 | 466.1512 | 4.20*** |
| γ4 | -224.1866 | -2.24** |
| γ5 | -3.8128 | -0.04 |
| γ6 | 123.9172 | 1.87* |
0.696
Persistence2d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.7838 | 1.30 |
α ARCH Response to squared shocks | 0.0031 | 0.06 |
β GARCH Volatility persistence | 0.6934 | 1.52 |
Spline Coefficients
K=6
| γ1 | 534.9668 | 4.18*** |
| γ2 | -835.9644 | -4.82*** |
| γ3 | 466.1512 | 4.20*** |
| γ4 | -224.1866 | -2.24** |
| γ5 | -3.8128 | -0.04 |
| γ6 | 123.9172 | 1.87* |
Persistence:
0.696
Half-life:
2 days
Other Inner Mongolia Shuangxin Environment-Friendly Material Co Ltd Analyses
Other Zero Slope Spline-GARCH Analyses on International Equities