CBOE Amazon Volatility Index Spline-GARCH Volatility Analysis
Volatility prediction for Friday, October 16th, 2026
1 Day
62.99%
decreased by 2.24%
1 Week
78.05%
increased by 12.82%
1 Month
85.07%
increased by 19.84%
Analysis last updated: Friday, October 16, 2026 at 11:31 AM UTC
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News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jan 7, 2011 to Oct 9, 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 1 trading day.
τ
Spline-GARCH Model
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Time-varying baseline: volatility reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.1551 | 5.87*** |
| αARCH | 0.5387 | 5.07*** |
| βGARCH | 0.0059 | 0.58 |
Spline Coefficients
K=4
| γ1 | 0.0988 | 2.62*** |
| γ2 | -0.1914 | -3.24*** |
| γ3 | 0.1461 | 3.22*** |
| γ4 | -0.1206 | -2.15** |
0.545
Persistence1d
Half-lifeτ
Spline-GARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.1551 | 5.87*** |
α ARCH Response to squared shocks | 0.5387 | 5.07*** |
β GARCH Volatility persistence | 0.0059 | 0.58 |
Spline Coefficients
K=4
| γ1 | 0.0988 | 2.62*** |
| γ2 | -0.1914 | -3.24*** |
| γ3 | 0.1461 | 3.22*** |
| γ4 | -0.1206 | -2.15** |
Persistence:
0.545
Half-life:
1 days
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