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Korea Stock Exchange KOSPI Index EGARCH Volatility Analysis

Volatility prediction for Friday, October 2nd, 2026

1 Day

30.71%

decreased by 0.16%

1 Week

30.71%

decreased by 0.16%

1 Month

30.73%

decreased by 0.14%

Analysis last updated: Thursday, October 1, 2026 at 09:02 AM UTC

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Date Range:

from

10/01/2024

to

10/01/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Korea Stock Exchange KOSPI Index EGARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Oct 1, 2026

Model Insight

This asset exhibits a notable leverage effect: negative returns increase next-day volatility 67% more than equivalent positive returns.

σ

EGARCH Model

Tap to view equation

Leverage: Negative returns increase volatility 67% more than positive returns
ParamValuet-stat
ωconst0.0154
4.22***
αARCH0.1872
12.86***
βGARCH0.9884
442.84***
γleverage-0.0472
-3.57***

0.988

Persistence

60d

Half-life
σ

EGARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0154
4.22***
α

ARCH

Response to squared shocks

0.1872
12.86***
β

GARCH

Volatility persistence

0.9884
442.84***
γ

leverage

Additional response to negative shocks

-0.0472
-3.57***

Persistence:

0.988

Half-life:

60 days