V-Lab
SK Hynix Inc GAS-GARCH Student T Volatility Analysis
Volatility prediction for Friday, September 11th, 2026
1 Day
95.04%
1 Week
94.94%
1 Month
94.56%
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
Dec 26, 1996 to Sep 4, 2026Model Insight
With persistence 0.998, volatility shocks have a half-life of 340 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 = 7.47 degrees of freedom, capturing fatter tails than a normal distribution.
GAS-GARCH-T Model
Tap to view equation
| Param | Value | t-stat |
|---|---|---|
| ωconst | 17.9336 | 2.10** |
| αARCH | 0.0421 | 12.36*** |
| βGARCH | 0.9980 | 1,116.29*** |
| νDF | 7.4743 | 2.28** |
0.998
Persistence340d
Half-lifeGAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 17.9336 | 2.10** |
α ARCH Response to squared shocks | 0.0421 | 12.36*** |
β GARCH Volatility persistence | 0.9980 | 1,116.29*** |
ν DF Student-t tail thickness | 7.4743 | 2.28** |
Persistence:
0.998
Half-life:
340 days
Other SK Hynix Inc Analyses
Other GAS-GARCH Student T Analyses on International Equities