V-Lab
Warsaw Stock Exchange WIG Total Return Index MF2-GARCH Volatility Analysis
Volatility prediction for Thursday, September 24th, 2026
1 Day
15.64%
increased by 0.04%
1 Week
15.98%
increased by 0.38%
1 Month
17.09%
increased by 1.49%
Analysis last updated: Thursday, September 24, 2026 at 05:50 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Apr 17, 1991 to Sep 18, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 150% more than equivalent positive returns.
σ
MF2-GARCH Model
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Leverage: Negative returns increase volatility 150% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| mwindow | 21 | |
| αARCH | 0.0572 | 4.68*** |
| βGARCH | 0.8049 | 37.31*** |
| γleverage | 0.0856 | 4.74*** |
| λ₁tau intercept | 0.0093 | 2.51** |
| λ₂forecast adj. | 0.0380 | 4.38*** |
| λ₃tau persistence | 0.9575 | 98.74*** |
0.905
Persistence7d
Half-lifeσ
MF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 21 | |
α ARCH Response to squared shocks | 0.0572 | 4.68*** |
β GARCH Volatility persistence | 0.8049 | 37.31*** |
γ leverage Additional response to negative shocks | 0.0856 | 4.74*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0093 | 2.51** |
λ₂ forecast adj. Forecast performance sensitivity | 0.0380 | 4.38*** |
λ₃ tau persistence Long-term factor persistence | 0.9575 | 98.74*** |
Persistence:
0.905
Half-life:
7 days
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