1M US Treasury CMT 1 Month Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Monday, November 9th, 2026
1 Day
8.75%
decreased by 0.39%
1 Week
9.08%
decreased by 0.06%
1 Month
10.28%
increased by 1.14%
Analysis last updated: Saturday, November 7, 2026 at 04:01 AM UTC
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How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jul 31, 2001 to Nov 6, 2026Model Insight
With persistence 0.999, volatility shocks have a half-life of 510 trading days (~2.0 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 0.999, shock half-life ~510 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.9738 | 1.45 |
| αARCH | 0.1458 | 8.95*** |
| βGARCH | 0.8529 | 54.16*** |
Spline Coefficients
K=9
| γ1 | 0.4925 | 0.62 |
| γ2 | 0.7162 | 0.62 |
| γ3 | -2.2937 | -2.69*** |
| γ4 | 1.4391 | 2.39** |
| γ5 | -0.7359 | -2.17** |
| γ6 | 0.2481 | 0.94 |
| γ7 | 0.3566 | 1.60 |
| γ8 | 0.0140 | 0.06 |
| γ9 | -0.3623 | -1.74* |
0.999
Persistence510d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.9738 | 1.45 |
α ARCH Response to squared shocks | 0.1458 | 8.95*** |
β GARCH Volatility persistence | 0.8529 | 54.16*** |
Spline Coefficients
K=9
| γ1 | 0.4925 | 0.62 |
| γ2 | 0.7162 | 0.62 |
| γ3 | -2.2937 | -2.69*** |
| γ4 | 1.4391 | 2.39** |
| γ5 | -0.7359 | -2.17** |
| γ6 | 0.2481 | 0.94 |
| γ7 | 0.3566 | 1.60 |
| γ8 | 0.0140 | 0.06 |
| γ9 | -0.3623 | -1.74* |
Persistence:
0.999
Half-life:
510 days
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