V-Lab
Sansteel Minguang Co Ltd Fujian GJR-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 15th, 2026
1 Day
29.51%
decreased by 0.91%
1 Week
30.06%
decreased by 0.36%
1 Month
32.03%
increased by 1.61%
Analysis last updated: Wednesday, September 16, 2026 at 04:24 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 26, 2007 to Sep 14, 2026Model Insight
Volatility shocks decay with a half-life of 63 trading days, meaning a shock loses half its impact after approximately 63 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 63-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.1038 | 3.12*** |
| αARCH | 0.1011 | 4.46*** |
| βGARCH | 0.9096 | 86.30*** |
| γleverage | -0.0433 | -1.44 |
0.989
Persistence63d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.1038 | 3.12*** |
α ARCH Response to squared shocks | 0.1011 | 4.46*** |
β GARCH Volatility persistence | 0.9096 | 86.30*** |
γ leverage Additional response to negative shocks | -0.0433 | -1.44 |
Persistence:
0.989
Half-life:
63 days
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