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PMA Graphene Technology Group Inc GAS-GARCH Student T Volatility Analysis

Volatility prediction for Tuesday, September 15th, 2026

1 Day

151.39%

increased by 2.11%

1 Week

160.18%

increased by 10.90%

1 Month

167.63%

increased by 18.35%

Analysis last updated: Monday, September 14, 2026 at 09:34 PM UTC

Date Range:

from

to

6M ·

1Y ·

All

graph of PMA Graphene Technology Group Inc GAS-GARCH-T

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 2 trading days, meaning a shock loses half its impact after approximately 2 days. Returns follow a Student-t distribution with v = 2.92 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

Shock decay: Shocks decay with a 2-day half-lifev = 2.92 · fat tails
ParamValuet-stat
ωconst115.3952
0.85
αARCH0.1997
1.02
βGARCH0.7009
1.95*
νDF2.9183
0.95

0.701

Persistence

2d

Half-life
𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

115.3952
0.85
α

ARCH

Response to squared shocks

0.1997
1.02
β

GARCH

Volatility persistence

0.7009
1.95*
ν

DF

Student-t tail thickness

2.9183
0.95

Persistence:

0.701

Half-life:

2 days