V-Lab
Samsung Electronics Co Ltd GAS-GARCH Student T Volatility Analysis
Volatility prediction for Thursday, September 3rd, 2026
1 Day
86.66%
decreased by 0.79%
1 Week
86.29%
decreased by 1.16%
1 Month
84.83%
decreased by 2.62%
Analysis last updated: Thursday, September 3, 2026 at 07:41 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 3, 1990 to Aug 28, 2026Model Insight
With persistence 0.995, volatility shocks have a half-life of 131 trading days (~0.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate. Returns follow a Student-t distribution with v = 6.88 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 | 5.5124 | 1.49 |
α ARCH Response to squared shocks | 0.0487 | 9.68*** |
β GARCH Volatility persistence | 0.9947 | 266.89*** |
ν DF Student-t tail thickness | 6.8820 | 1.93* |
Persistence:
0.995
Half-life:
131 days
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