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V-Lab

Warsaw Stock Exchange WIG Total Return Index GJR-GARCH Volatility Analysis

Volatility prediction for Friday, July 24th, 2026

1 Day

15.73%

increased by 0.36%

1 Week

15.95%

increased by 0.58%

1 Month

16.79%

increased by 1.42%

Analysis last updated: Friday, July 24, 2026 at 05:47 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of Warsaw Stock Exchange WIG Total Return Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Apr 17, 1991 to Jul 17, 2026

Model Insight

With persistence 0.991, volatility shocks have a half-life of 75 trading days (~0.3 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Leverage: Negative returns increase volatility 49% more than positive returns

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0235
18.90***
α

ARCH

Response to squared shocks

0.0545
15.54***
β

GARCH

Volatility persistence

0.9230
379.52***
γ

leverage

Additional response to negative shocks

0.0266
4.73***

Persistence:

0.991

Half-life:

75 days