V-Lab
Betapro Nasdaq-100 -2X D ETF Zero Slope Spline-GARCH Volatility Analysis
Volatility prediction for Tuesday, September 29th, 2026
1 Day
37.85%
decreased by 0.15%
1 Week
38.53%
increased by 0.53%
1 Month
40.66%
increased by 2.66%
Analysis last updated: Tuesday, September 29, 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 25, 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 21 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 | 1.4380 | 7.29*** |
| αARCH | 0.1174 | 8.28*** |
| βGARCH | 0.8504 | 53.00*** |
Spline Coefficients
K=2
| γ1 | 0.0214 | 4.03*** |
| γ2 | -0.0266 | -3.96*** |
0.968
Persistence21d
Half-lifeτ
Zero Slope Spline-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.4380 | 7.29*** |
α ARCH Response to squared shocks | 0.1174 | 8.28*** |
β GARCH Volatility persistence | 0.8504 | 53.00*** |
Spline Coefficients
K=2
| γ1 | 0.0214 | 4.03*** |
| γ2 | -0.0266 | -3.96*** |
Persistence:
0.968
Half-life:
21 days
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