US Dollar to Chinese Renminbi MF2-GARCH Volatility Analysis
High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful
Volatility prediction for Monday, October 19th, 2026
1 Day
1.10%
1 Week
1.24%
1 Month
2.18%
Analysis last updated: Sunday, October 18, 2026 at 03:14 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Feb 6, 1992 to Oct 16, 2026Model Insight
With persistence 1.000, volatility shocks have a half-life of 198042 trading days (~785.9 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
MF2-GARCH Model
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| Param | Value | t-stat |
|---|---|---|
| mwindow | 21 | |
| αARCH | 0.0150 | 0.77 |
| βGARCH | 0.9881 | 4,411.33*** |
| γleverage | -0.0062 | -0.16 |
| λ₁tau intercept | 0.0140 | 1.24 |
| λ₂forecast adj. | 0.2385 | 0.47 |
| λ₃tau persistence | 0.0001 | 0.00 |
1.000
Persistence198042d
Half-lifeMF2-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 21 | |
α ARCH Response to squared shocks | 0.0150 | 0.77 |
β GARCH Volatility persistence | 0.9881 | 4,411.33*** |
γ leverage Additional response to negative shocks | -0.0062 | -0.16 |
λ₁ tau intercept Baseline long-term coefficient | 0.0140 | 1.24 |
λ₂ forecast adj. Forecast performance sensitivity | 0.2385 | 0.47 |
λ₃ tau persistence Long-term factor persistence | 0.0001 | 0.00 |
Persistence:
1.000
Half-life:
198042 days
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