6M US Treasury CMT 6 Month Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, November 9th, 2026
1 Day
13.84%
increased by 0.35%
1 Week
14.08%
increased by 0.59%
1 Month
15.01%
increased by 1.52%
Analysis last updated: Saturday, November 7, 2026 at 05:00 AM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 1, 1990 to Nov 6, 2026Model Insight
With persistence 1.000, volatility shocks have a half-life of 6027 trading days (~23.9 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
τ
Zero Slope Spline-GARCH Model
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High persistence: persistence 1.000, shock half-life ~6027 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.3975 | 2.27** |
| αARCH | 0.1331 | 10.52*** |
| βGARCH | 0.8668 | 68.42*** |
Spline Coefficients
K=8
| γ1 | -0.1869 | -2.67*** |
| γ2 | 0.2762 | 2.62*** |
| γ3 | -0.1616 | -2.45** |
| γ4 | 0.2385 | 4.46*** |
| γ5 | -0.2777 | -2.97*** |
| γ6 | -0.0183 | -0.14 |
| γ7 | 0.2711 | 2.37** |
| γ8 | -0.1620 | -2.68*** |
1.000
Persistence6027d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.3975 | 2.27** |
α ARCH Response to squared shocks | 0.1331 | 10.52*** |
β GARCH Volatility persistence | 0.8668 | 68.42*** |
Spline Coefficients
K=8
| γ1 | -0.1869 | -2.67*** |
| γ2 | 0.2762 | 2.62*** |
| γ3 | -0.1616 | -2.45** |
| γ4 | 0.2385 | 4.46*** |
| γ5 | -0.2777 | -2.97*** |
| γ6 | -0.0183 | -0.14 |
| γ7 | 0.2711 | 2.37** |
| γ8 | -0.1620 | -2.68*** |
Persistence:
1.000
Half-life:
6027 days
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