V-Lab
20Y US Treasury CMT 20 Year MF2-GARCH Volatility Analysis
Volatility prediction for Thursday, September 24th, 2026
1 Day
14.19%
1 Week
14.27%
1 Month
14.58%
Analysis last updated: Thursday, September 24, 2026 at 03:00 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Oct 1, 1993 to Sep 18, 2026Model Insight
With persistence 0.999, volatility shocks have a half-life of 990 trading days (~3.9 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
Leverage: Negative returns increase volatility 190% more than positive returns
MF2-GARCH Model
Tap to view equation
| Param | Value | t-stat |
|---|---|---|
| mwindow | 126 | |
| αARCH | 0.0182 | 4.97*** |
| βGARCH | 0.9639 | 232.10*** |
| γleverage | 0.0345 | 4.80*** |
| λ₁tau intercept | 0.0015 | 0.32 |
| λ₂forecast adj. | 0.0000 | 0.00 |
| λ₃tau persistence | 0.9998 | 184.77*** |
0.999
Persistence990d
Half-lifeMF2-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 126 | |
α ARCH Response to squared shocks | 0.0182 | 4.97*** |
β GARCH Volatility persistence | 0.9639 | 232.10*** |
γ leverage Additional response to negative shocks | 0.0345 | 4.80*** |
λ₁ tau intercept Baseline long-term coefficient | 0.0015 | 0.32 |
λ₂ forecast adj. Forecast performance sensitivity | 0.0000 | 0.00 |
λ₃ tau persistence Long-term factor persistence | 0.9998 | 184.77*** |
Persistence:
0.999
Half-life:
990 days
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