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V-Lab

Han Kook Capital Co Ltd GJR-GARCH Volatility Analysis

Volatility prediction for Thursday, July 30th, 2026

1 Day

36.15%

decreased by 2.34%

1 Week

36.63%

decreased by 1.86%

1 Month

38.43%

decreased by 0.06%

Analysis last updated: Thursday, July 30, 2026 at 07:48 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of Han Kook Capital Co Ltd GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 26, 2001 to Jul 24, 2026

Model Insight

With persistence 0.992, volatility shocks have a half-life of 90 trading days (~0.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Inverse leverage: Positive returns increase volatility 24% more than negative returns

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.1108
14.34***
α

ARCH

Response to squared shocks

0.1533
15.12***
β

GARCH

Volatility persistence

0.8537
136.09***
γ

leverage

Additional response to negative shocks

-0.0293
-2.31**

Persistence:

0.992

Half-life:

90 days