Skip to main content
V-Lab

Stran & Company Inc GJR-GARCH Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

53.98%

decreased by 0.25%

1 Week

54.52%

increased by 0.29%

1 Month

56.55%

increased by 2.32%

Analysis last updated: Friday, July 24, 2026 at 10:07 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Stran & Company Inc GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

May 17, 1999 to Jul 24, 2026

Model Insight

With persistence 0.996, volatility shocks have a half-life of 197 trading days (~0.8 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Inverse leverage: Positive returns increase volatility 139% more than negative returns

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.1555
6.35***
α

ARCH

Response to squared shocks

0.0686
8.11***
β

GARCH

Volatility persistence

0.9478
289.77***
γ

leverage

Additional response to negative shocks

-0.0399
-3.78***

Persistence:

0.996

Half-life:

197 days