V-Lab
ICE BofAML U.S. Bond Market 6 Month Option Volatility Estimate Index Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Friday, September 4th, 2026
1 Day
24.87%
decreased by 1.62%
1 Week
25.60%
decreased by 0.89%
1 Month
27.13%
increased by 0.64%
Analysis last updated: Friday, September 4, 2026 at 11:27 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Feb 26, 2008 to Aug 27, 2026Model Insight
This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 7 trading days.
τ
Zero Slope Spline-GARCH Model
Tap to view equation
Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 2.2941 | 4.69*** |
| αARCH | 0.1698 | 4.93*** |
| βGARCH | 0.7306 | 18.09*** |
Spline Coefficients
K=6
| γ1 | 0.2287 | 2.43** |
| γ2 | -0.3674 | -2.65*** |
| γ3 | 0.2857 | 3.54*** |
| γ4 | -0.1860 | -2.37** |
| γ5 | -0.0224 | -0.27 |
| γ6 | 0.1034 | 1.85* |
0.900
Persistence7d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 2.2941 | 4.69*** |
α ARCH Response to squared shocks | 0.1698 | 4.93*** |
β GARCH Volatility persistence | 0.7306 | 18.09*** |
Spline Coefficients
K=6
| γ1 | 0.2287 | 2.43** |
| γ2 | -0.3674 | -2.65*** |
| γ3 | 0.2857 | 3.54*** |
| γ4 | -0.1860 | -2.37** |
| γ5 | -0.0224 | -0.27 |
| γ6 | 0.1034 | 1.85* |
Persistence:
0.900
Half-life:
7 days
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