PGIM S&P 500 Max Buffer ETF - December Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, October 20th, 2026
1 Day
1.63%
increased by 0.05%
1 Week
1.61%
increased by 0.03%
1 Month
1.58%
increased by 0.00%
Analysis last updated: Tuesday, October 20, 2026 at 02:19 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Dec 2, 2025 to Oct 16, 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 3 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 | 0.7309 | 4.55*** |
| αARCH | 0.0386 | 0.78 |
| βGARCH | 0.7655 | 1.84* |
Spline Coefficients
K=2
| γ1 | -11.4625 | -3.32*** |
| γ2 | 15.3667 | 3.48*** |
0.804
Persistence3d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.7309 | 4.55*** |
α ARCH Response to squared shocks | 0.0386 | 0.78 |
β GARCH Volatility persistence | 0.7655 | 1.84* |
Spline Coefficients
K=2
| γ1 | -11.4625 | -3.32*** |
| γ2 | 15.3667 | 3.48*** |
Persistence:
0.804
Half-life:
3 days
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