V-Lab
OMX Copenhagen 20 Index GJR-GARCH Volatility Analysis
Volatility prediction for Wednesday, August 19th, 2026
1 Day
16.10%
decreased by 0.70%
1 Week
16.32%
decreased by 0.48%
1 Month
17.02%
increased by 0.22%
Analysis last updated: Wednesday, August 19, 2026 at 05:40 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Aug 14, 2026Model Insight
This asset exhibits a strong leverage effect: negative returns increase next-day volatility 135% more than equivalent positive returns.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0446 | 18.63*** |
α ARCH Response to squared shocks | 0.0571 | 15.14*** |
β GARCH Volatility persistence | 0.8751 | 313.42*** |
γ leverage Additional response to negative shocks | 0.0769 | 9.53*** |
Persistence:
0.971
Half-life:
23 days
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