V-Lab
SK Hynix Inc Asy. MEM Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
74.44%
decreased by 1.58%
1 Week
74.36%
decreased by 1.66%
1 Month
74.08%
decreased by 1.94%
Analysis last updated: Friday, September 11, 2026 at 08:34 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1997 to Sep 4, 2026Model Insight
With persistence 0.995, volatility shocks have a half-life of 141 trading days (~0.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
AMEM Model
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High persistence: persistence 0.995, shock half-life ~141 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0861 | 4.77*** |
| αARCH | 0.1270 | 9.77*** |
| βGARCH | 0.8607 | 89.33*** |
| γleverage | 0.0150 | 0.77 |
0.995
Persistence141d
Half-lifeμ
AMEM Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0861 | 4.77*** |
α ARCH Response to squared shocks | 0.1270 | 9.77*** |
β GARCH Volatility persistence | 0.8607 | 89.33*** |
γ leverage Additional response to negative shocks | 0.0150 | 0.77 |
Persistence:
0.995
Half-life:
141 days
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