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V-Lab
V-Lab

Smart Powerr Corp GJR-GARCH Volatility Analysis

Volatility prediction for Monday, September 21st, 2026

1 Day

201.83%

decreased by 4.70%

1 Week

200.27%

decreased by 6.26%

1 Month

194.44%

decreased by 12.09%

Analysis last updated: Saturday, September 19, 2026 at 09:25 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Smart Powerr Corp GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jul 4, 2001 to Sep 18, 2026

Model Insight

Volatility shocks decay with a half-life of 53 trading days, meaning a shock loses half its impact after approximately 53 days.

σ

GJR-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 53-day half-life
ParamValuet-stat
ωconst0.8378
1.59
αARCH0.0391
2.89***
βGARCH0.9392
69.25***
γleverage0.0175
0.62

0.987

Persistence

53d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.8378
1.59
α

ARCH

Response to squared shocks

0.0391
2.89***
β

GARCH

Volatility persistence

0.9392
69.25***
γ

leverage

Additional response to negative shocks

0.0175
0.62

Persistence:

0.987

Half-life:

53 days