PMA Graphene Technology Group Inc GJR-GARCH Volatility Analysis
Volatility prediction for Monday, October 26th, 2026
1 Day
87.88%
decreased by 0.67%
1 Week
96.67%
increased by 8.12%
1 Month
118.30%
increased by 29.75%
Analysis last updated: Friday, October 23, 2026 at 10:32 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 22, 2024 to Oct 23, 2026Boundary Parameters
Model Insight
Volatility shocks decay with a half-life of 13 trading days, meaning a shock loses half its impact after approximately 13 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 13-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 5.0000 | 0.87 |
| αARCH | 0.0717 | 1.04 |
| βGARCH | 0.8156 | 12.68*** |
| γleverage | 0.1206 | 0.64 |
0.948
Persistence13d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 5.0000 | 0.87 |
α ARCH Response to squared shocks | 0.0717 | 1.04 |
β GARCH Volatility persistence | 0.8156 | 12.68*** |
γ leverage Additional response to negative shocks | 0.1206 | 0.64 |
Persistence:
0.948
Half-life:
13 days
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