V-Lab
Sivers Semiconductors Ab AGARCH Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
126.24%
decreased by 7.55%
1 Week
124.25%
decreased by 9.54%
1 Month
117.35%
decreased by 16.44%
Analysis last updated: Friday, September 11, 2026 at 09:19 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 17, 2014 to Sep 4, 2026Model Insight
Volatility shocks decay with a half-life of 24 trading days, meaning a shock loses half its impact after approximately 24 days.
σ
AGARCH Model
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Shock decay: Shocks decay with a 24-day half-life
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.7429 | 2.21** |
| αARCH | 0.0923 | 3.48*** |
| βGARCH | 0.8798 | 34.69*** |
| γleverage | -0.2432 | -0.18 |
0.972
Persistence24d
Half-lifeσ
AGARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.7429 | 2.21** |
α ARCH Response to squared shocks | 0.0923 | 3.48*** |
β GARCH Volatility persistence | 0.8798 | 34.69*** |
γ leverage Additional response to negative shocks | -0.2432 | -0.18 |
Persistence:
0.972
Half-life:
24 days
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