Japanese Yen GARCH Volatility Analysis
Volatility prediction for Wednesday, October 21st, 2026
1 Day
5.73%
decreased by 0.08%
1 Week
5.78%
decreased by 0.03%
1 Month
5.96%
increased by 0.15%
Analysis last updated: Tuesday, October 20, 2026 at 08:50 PM UTC
Press Delete or Backspace to remove this series.
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 2, 1990 to Oct 16, 2026Model Insight
With persistence 0.994, volatility shocks have a half-life of 107 trading days (~0.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
σ
GARCH Model
Tap to view equation
High persistence: persistence 0.994, shock half-life ~107 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.0020 | 4.38*** |
| αARCH | 0.0378 | 8.71*** |
| βGARCH | 0.9557 | 198.41*** |
0.994
Persistence107d
Half-lifeσ
GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.0020 | 4.38*** |
α ARCH Response to squared shocks | 0.0378 | 8.71*** |
β GARCH Volatility persistence | 0.9557 | 198.41*** |
Persistence:
0.994
Half-life:
107 days
Other Japanese Yen Analyses
Other GARCH Analyses on Currencies