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NYMEX Platinum GJR-GARCH Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

41.40%

increased by 4.22%

1 Week

41.31%

increased by 4.13%

1 Month

40.93%

increased by 3.75%

Analysis last updated: Friday, September 11, 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 Sep 4, 2026

Model Insight

With persistence 0.994, volatility shocks have a half-life of 121 trading days (~0.5 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 0.994, shock half-life ~121 days
ParamValuet-stat
ωconst0.0229
2.49**
αARCH0.0618
2.49**
βGARCH0.9433
72.42***
γleverage-0.0217
-0.73

0.994

Persistence

121d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0229
2.49**
α

ARCH

Response to squared shocks

0.0618
2.49**
β

GARCH

Volatility persistence

0.9433
72.42***
γ

leverage

Additional response to negative shocks

-0.0217
-0.73

Persistence:

0.994

Half-life:

121 days