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V-Lab

Iwatsuka Confectionery Co GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, July 28th, 2026

1 Day

12.39%

increased by 0.66%

1 Week

13.08%

increased by 1.35%

1 Month

15.47%

increased by 3.74%

Analysis last updated: Tuesday, July 28, 2026 at 07:36 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Iwatsuka Confectionery Co GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 24, 1995 to Jul 24, 2026

Model Insight

With persistence 0.994, volatility shocks have a half-life of 125 trading days (~0.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Inverse leverage: Positive returns increase volatility 60% more than negative returns

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0387
11.54***
α

ARCH

Response to squared shocks

0.1256
17.64***
β

GARCH

Volatility persistence

0.8924
288.05***
γ

leverage

Additional response to negative shocks

-0.0470
-4.34***

Persistence:

0.994

Half-life:

125 days