V-Lab
S&P GSCI Palladium Spot Index GJR-GARCH Volatility Analysis
Volatility prediction for Tuesday, August 25th, 2026
1 Day
37.19%
decreased by 1.12%
1 Week
37.22%
decreased by 1.09%
1 Month
37.32%
decreased by 0.99%
Analysis last updated: Monday, August 24, 2026 at 11:09 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 26, 2008 to Aug 21, 2026Model Insight
Volatility shocks decay with a half-life of 65 trading days, meaning a shock loses half its impact after approximately 65 days.
σ
GJR-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0620 | 15.23*** |
α ARCH Response to squared shocks | 0.0599 | 15.60*** |
β GARCH Volatility persistence | 0.9260 | 345.77*** |
γ leverage Additional response to negative shocks | 0.0071 | 1.05 |
Persistence:
0.989
Half-life:
65 days
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