V-Lab
OMX Stockholm 30 Index GJR-GARCH Volatility Analysis
Volatility prediction for Monday, September 7th, 2026
1 Day
12.99%
decreased by 0.38%
1 Week
13.37%
decreased by 0.00%
1 Month
14.66%
increased by 1.29%
Analysis last updated: Friday, September 4, 2026 at 04:05 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Sep 4, 2026Model Insight
This asset exhibits a strong leverage effect: volatility responds almost entirely to negative shocks. The ARCH response to positive shocks is negligible.
σ
GJR-GARCH Model
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Leverage: volatility responds almost entirely to negative shocks
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0299 | 5.47*** |
| αARCH | 0.0234 | 2.48** |
| βGARCH | 0.9008 | 121.39*** |
| γleverage | 0.1222 | 5.89*** |
0.985
Persistence47d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0299 | 5.47*** |
α ARCH Response to squared shocks | 0.0234 | 2.48** |
β GARCH Volatility persistence | 0.9008 | 121.39*** |
γ leverage Additional response to negative shocks | 0.1222 | 5.89*** |
Persistence:
0.985
Half-life:
47 days
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