SK Hynix Inc GJR-GARCH Volatility Analysis
Volatility prediction for Tuesday, July 14th, 2026
1 Day
121.66%
increased by 14.47%
1 Week
121.43%
increased by 14.24%
1 Month
120.52%
increased by 13.33%
Analysis last updated: Tuesday, July 14, 2026 at 07:40 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 26, 1996 to Jul 10, 2026Model Insight
With persistence 0.997, volatility shocks have a half-life of 262 trading days (~1.0 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Leverage: Negative returns increase volatility 76% more than positive returns
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0441 | 12.49*** |
α ARCH Response to squared shocks | 0.0310 | 19.25*** |
β GARCH Volatility persistence | 0.9546 | 806.27*** |
γ leverage Additional response to negative shocks | 0.0235 | 7.33*** |
Persistence:
0.997
Half-life:
262 days
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