V-Lab
SK Hynix Inc MEM Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
75.09%
decreased by 1.88%
1 Week
75.02%
decreased by 1.95%
1 Month
74.73%
decreased by 2.24%
Analysis last updated: Friday, September 11, 2026 at 08:33 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 145 trading days (~0.6 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
μ
MEM Model
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High persistence: persistence 0.995, shock half-life ~145 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0847 | 1.25 |
| αARCH | 0.1344 | 11.21*** |
| βGARCH | 0.8609 | 88.64*** |
0.995
Persistence145d
Half-lifeμ
MEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0847 | 1.25 |
α ARCH Response to squared shocks | 0.1344 | 11.21*** |
β GARCH Volatility persistence | 0.8609 | 88.64*** |
Persistence:
0.995
Half-life:
145 days
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