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V-Lab

S&P GSCI Palladium Spot Index GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, July 21st, 2026

1 Day

39.70%

decreased by 1.07%

1 Week

39.68%

decreased by 1.09%

1 Month

39.58%

decreased by 1.19%

Analysis last updated: Monday, July 20, 2026 at 11:09 PM UTC

Date Range:

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to

6M ·

1Y ·

2Y ·

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10Y ·

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graph of S&P GSCI Palladium Spot Index GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Dec 26, 2008 to Jul 17, 2026

Model Insight

Volatility shocks decay with a half-life of 64 trading days, meaning a shock loses half its impact after approximately 64 days.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0628
15.19***
α

ARCH

Response to squared shocks

0.0609
15.57***
β

GARCH

Volatility persistence

0.9252
342.43***
γ

leverage

Additional response to negative shocks

0.0063
0.92

Persistence:

0.989

Half-life:

64 days