SK Hynix Inc GAS-GARCH Student T Volatility Analysis
Volatility prediction for Tuesday, July 14th, 2026
1 Day
120.92%
increased by 10.24%
1 Week
120.75%
increased by 10.07%
1 Month
120.10%
increased by 9.42%
Analysis last updated: Tuesday, July 14, 2026 at 07:41 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 0.998, volatility shocks have a half-life of 348 trading days (~1.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 7.53 degrees of freedom, capturing fatter tails than a normal distribution.
𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 17.9998 | 8.50*** |
α ARCH Response to squared shocks | 0.0417 | 49.33*** |
β GARCH Volatility persistence | 0.9980 | 4,557.13*** |
ν DF Student-t tail thickness | 7.5310 | 8.92*** |
Persistence:
0.998
Half-life:
348 days
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