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V-Lab

KOSPI 200 Volatility Index GJR-GARCH Volatility Analysis

Volatility prediction for Friday, July 24th, 2026

1 Day

63.56%

decreased by 1.43%

1 Week

67.27%

increased by 2.28%

1 Month

74.95%

increased by 9.96%

Analysis last updated: Friday, July 24, 2026 at 11:23 PM UTC

Date Range:

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to

6M ·

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2Y ·

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10Y ·

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graph of KOSPI 200 Volatility Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 1, 2003 to Jul 16, 2026

Model Insight

This asset shows a rare inverse leverage effect: volatility responds almost entirely to positive returns, rising far more after gains than after losses. This is the reverse of the usual leverage effect, rare among risky assets.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

2.5743
15.35***
α

ARCH

Response to squared shocks

0.2053
15.36***
β

GARCH

Volatility persistence

0.8028
101.95***
γ

leverage

Additional response to negative shocks

-0.2053
-13.34***

Persistence:

0.905

Half-life:

7 days