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V-Lab

NYMEX Platinum GJR-GARCH Volatility Analysis

Volatility prediction for Wednesday, July 8th, 2026

1 Day

37.58%

decreased by 0.74%

1 Week

37.52%

decreased by 0.80%

1 Month

37.28%

decreased by 1.04%

Analysis last updated: Wednesday, July 8, 2026 at 05:16 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

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graph of NYMEX Platinum GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Oct 29, 1997 to Jul 3, 2026

Model Insight

With persistence 0.994, volatility shocks have a half-life of 119 trading days (~0.5 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

Inverse leverage: Positive returns increase volatility 55% more than negative returns

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0232
9.94***
α

ARCH

Response to squared shocks

0.0627
9.92***
β

GARCH

Volatility persistence

0.9426
286.08***
γ

leverage

Additional response to negative shocks

-0.0223
-2.96***

Persistence:

0.994

Half-life:

119 days