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US Dollar to Japanese Yen GJR-GARCH Volatility Analysis

Volatility prediction for Tuesday, September 29th, 2026

1 Day

7.87%

decreased by 0.10%

1 Week

7.88%

decreased by 0.09%

1 Month

7.91%

decreased by 0.06%

Analysis last updated: Monday, September 28, 2026 at 07:10 PM UTC

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graph of US Dollar to Japanese Yen GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Sep 25, 2026

Model Insight

With persistence 0.992, volatility shocks have a half-life of 89 trading days (~0.4 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 0.992, shock half-life ~89 days
ParamValuet-stat
ωconst0.0022
4.74***
αARCH0.0263
4.43***
βGARCH0.9555
206.38***
γleverage0.0209
1.88*

0.992

Persistence

89d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0022
4.74***
α

ARCH

Response to squared shocks

0.0263
4.43***
β

GARCH

Volatility persistence

0.9555
206.38***
γ

leverage

Additional response to negative shocks

0.0209
1.88*

Persistence:

0.992

Half-life:

89 days