V-Lab
BetaPro NASDAQ-100 2x Daily Bull ETF Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 15th, 2026
1 Day
32.30%
decreased by 0.08%
1 Week
33.51%
increased by 1.13%
1 Month
37.14%
increased by 4.76%
Analysis last updated: Tuesday, September 15, 2026 at 09:06 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Jun 18, 2008 to Sep 11, 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 20 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 | 1.4268 | 7.25*** |
| αARCH | 0.1167 | 8.38*** |
| βGARCH | 0.8499 | 51.71*** |
Spline Coefficients
K=2
| γ1 | 0.0219 | 3.93*** |
| γ2 | -0.0274 | -3.88*** |
0.967
Persistence20d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.4268 | 7.25*** |
α ARCH Response to squared shocks | 0.1167 | 8.38*** |
β GARCH Volatility persistence | 0.8499 | 51.71*** |
Spline Coefficients
K=2
| γ1 | 0.0219 | 3.93*** |
| γ2 | -0.0274 | -3.88*** |
Persistence:
0.967
Half-life:
20 days
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