V-Lab
SK Hynix Inc Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 8th, 2026
1 Day
102.15%
increased by 0.99%
1 Week
101.74%
increased by 0.58%
1 Month
100.14%
decreased by 1.02%
Analysis last updated: Tuesday, September 8, 2026 at 09:15 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 26, 1996 to Sep 4, 2026Model Insight
With persistence 0.995, volatility shocks have a half-life of 135 trading days (~0.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
High persistence: persistence 0.995, shock half-life ~135 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.2093 | 6.61*** |
| αARCH | 0.0430 | 8.84*** |
| βGARCH | 0.9519 | 177.40*** |
Spline Coefficients
K=1
| γ1 | 0.0009 | 2.25** |
0.995
Persistence135d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.2093 | 6.61*** |
α ARCH Response to squared shocks | 0.0430 | 8.84*** |
β GARCH Volatility persistence | 0.9519 | 177.40*** |
Spline Coefficients
K=1
| γ1 | 0.0009 | 2.25** |
Persistence:
0.995
Half-life:
135 days
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