V-Lab
Samsung Electronics Co Ltd GJR-GARCH Volatility Analysis
Volatility prediction for Monday, September 21st, 2026
1 Day
72.89%
decreased by 1.21%
1 Week
72.73%
decreased by 1.37%
1 Month
72.10%
decreased by 2.00%
Analysis last updated: Sunday, September 20, 2026 at 12:36 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 3, 1990 to Sep 18, 2026Model Insight
With persistence 0.996, volatility shocks have a half-life of 195 trading days (~0.8 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
σ
GJR-GARCH Model
Tap to view equation
High persistence: persistence 0.996, shock half-life ~195 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0283 | 2.88*** |
| αARCH | 0.0334 | 4.93*** |
| βGARCH | 0.9496 | 176.14*** |
| γleverage | 0.0269 | 1.83* |
0.996
Persistence195d
Half-lifeσ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0283 | 2.88*** |
α ARCH Response to squared shocks | 0.0334 | 4.93*** |
β GARCH Volatility persistence | 0.9496 | 176.14*** |
γ leverage Additional response to negative shocks | 0.0269 | 1.83* |
Persistence:
0.996
Half-life:
195 days
Other Samsung Electronics Co Ltd Analyses
Other GJR-GARCH Analyses on International Equities