V-Lab
Defiance Daily Target 2X Short HOOD ETF APARCH Volatility Analysis
Inactive
Last recorded values (Friday, August 28th, 2026):
1 Day
146.36%
1 Week
147.99%
1 Month
149.31%
Analysis last updated: Wednesday, September 2, 2026 at 07:01 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 13, 2025 to Aug 27, 2026Boundary Parameters
Model Insight
Volatility shocks decay with a half-life of 2 trading days, meaning a shock loses half its impact after approximately 2 days. The volatility power δ = 0.50 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.
σ
APARCH Model
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Shock decay: Shocks decay with a 2-day half-lifeδ = 0.50 · sub-quadratic power
| Param | Value | t-stat |
|---|---|---|
| ωconst | 1.0000 | 0.54 |
| αARCH | 0.0688 | 0.75 |
| βGARCH | 0.6190 | 1.30 |
| γleverage | -0.3905 | -0.41 |
| δpower | 0.5000 | 0.64 |
0.674
Persistence2d
Half-lifeσ
APARCH Model
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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.0000 | 0.54 |
α ARCH Response to squared shocks | 0.0688 | 0.75 |
β GARCH Volatility persistence | 0.6190 | 1.30 |
γ leverage Additional response to negative shocks | -0.3905 | -0.41 |
δ power Transformation power | 0.5000 | 0.64 |
Persistence:
0.674
Half-life:
2 days
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