V-Lab
Empa Elektronik Sanayi VE Ticaret AS GJR-GARCH Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
75.07%
decreased by 2.94%
1 Week
78.88%
increased by 0.87%
1 Month
87.41%
increased by 9.40%
Analysis last updated: Friday, September 11, 2026 at 09:39 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Feb 26, 2026 to Sep 4, 2026Model Insight
Volatility shocks decay with a half-life of 8 trading days, meaning a shock loses half its impact after approximately 8 days.
σ
GJR-GARCH Model
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Shock decay: Shocks decay with a 8-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 3.0890 | 1.07 |
| αARCH | 0.2404 | 1.05 |
| βGARCH | 0.7390 | 6.91*** |
| γleverage | -0.1220 | -0.40 |
0.918
Persistence8d
Half-lifeσ
GJR-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 3.0890 | 1.07 |
α ARCH Response to squared shocks | 0.2404 | 1.05 |
β GARCH Volatility persistence | 0.7390 | 6.91*** |
γ leverage Additional response to negative shocks | -0.1220 | -0.40 |
Persistence:
0.918
Half-life:
8 days
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