V-Lab
Nanjing Vazyme Biotech Co Ltd GJR-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 15th, 2026
1 Day
64.98%
increased by 6.14%
1 Week
64.86%
increased by 6.02%
1 Month
64.45%
increased by 5.61%
Analysis last updated: Wednesday, September 16, 2026 at 03:55 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 15, 2021 to Sep 14, 2026Model Insight
Volatility shocks decay with a half-life of 28 trading days, meaning a shock loses half its impact after approximately 28 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 28-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.3768 | 3.04*** |
| αARCH | 0.1504 | 2.66*** |
| βGARCH | 0.8449 | 27.52*** |
| γleverage | -0.0393 | -0.45 |
0.976
Persistence28d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.3768 | 3.04*** |
α ARCH Response to squared shocks | 0.1504 | 2.66*** |
β GARCH Volatility persistence | 0.8449 | 27.52*** |
γ leverage Additional response to negative shocks | -0.0393 | -0.45 |
Persistence:
0.976
Half-life:
28 days
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