OMX Stockholm 30 Index EGARCH Volatility Analysis
Volatility prediction for Wednesday, October 21st, 2026
1 Day
17.67%
increased by 0.75%
1 Week
17.83%
increased by 0.91%
1 Month
18.40%
increased by 1.48%
Analysis last updated: Tuesday, October 20, 2026 at 04:06 PM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Oct 16, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 245% more than equivalent positive returns.
σ
EGARCH Model
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Leverage: Negative returns increase volatility 245% more than positive returns
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0134 | 2.10** |
| αARCH | 0.1535 | 11.13*** |
| βGARCH | 0.9794 | 256.67*** |
| γleverage | -0.0846 | -6.43*** |
0.979
Persistence33d
Half-lifeσ
EGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0134 | 2.10** |
α ARCH Response to squared shocks | 0.1535 | 11.13*** |
β GARCH Volatility persistence | 0.9794 | 256.67*** |
γ leverage Additional response to negative shocks | -0.0846 | -6.43*** |
Persistence:
0.979
Half-life:
33 days
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