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V-Lab

PMA Graphene Technology Group Inc GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, September 15th, 2026

1 Day

114.25%

increased by 1.00%

1 Week

118.16%

increased by 4.91%

1 Month

128.30%

increased by 15.05%

Analysis last updated: Monday, September 14, 2026 at 09:33 PM UTC

Date Range:

from

to

6M ·

1Y ·

All

graph of PMA Graphene Technology Group Inc GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Nov 22, 2024 to Sep 11, 2026

Model Insight

Volatility shocks decay with a half-life of 11 trading days, meaning a shock loses half its impact after approximately 11 days.

σ

GJR-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 11-day half-life
ParamValuet-stat
ωconst5.0000
0.69
αARCH0.0294
0.64
βGARCH0.8737
11.67***
γleverage0.0748
0.56

0.940

Persistence

11d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

5.0000
0.69
α

ARCH

Response to squared shocks

0.0294
0.64
β

GARCH

Volatility persistence

0.8737
11.67***
γ

leverage

Additional response to negative shocks

0.0748
0.56

Persistence:

0.940

Half-life:

11 days