V-Lab
5Y US Treasury CMT 5 Year Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Thursday, September 24th, 2026
1 Day
21.87%
increased by 2.89%
1 Week
22.00%
increased by 3.02%
1 Month
22.53%
increased by 3.55%
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
Jan 1, 1990 to Sep 18, 2026Model Insight
With persistence 1.000, volatility shocks have a half-life of 1600 trading days (~6.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
High persistence: persistence 1.000, shock half-life ~1600 days
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.1469 | 3.66*** |
| αARCH | 0.0496 | 10.26*** |
| βGARCH | 0.9499 | 194.46*** |
Spline Coefficients
K=1
| γ1 | -0.0006 | -1.67* |
1.000
Persistence1600d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1469 | 3.66*** |
α ARCH Response to squared shocks | 0.0496 | 10.26*** |
β GARCH Volatility persistence | 0.9499 | 194.46*** |
Spline Coefficients
K=1
| γ1 | -0.0006 | -1.67* |
Persistence:
1.000
Half-life:
1600 days
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