V-Lab
REX HOOD Growth & Income ETF APARCH Volatility Analysis
Inactive
Last recorded values (Wednesday, June 10th, 2026):
1 Day
73.56%
1 Week
71.89%
1 Month
70.35%
Analysis last updated: Wednesday, June 10, 2026 at 02:16 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Nov 4, 2025 to Jun 5, 2026Model 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 = 0.84 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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| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 1.0000 | 1.70* |
α ARCH Response to squared shocks | 0.0659 | 4.82*** |
β GARCH Volatility persistence | 0.6627 | 9.32*** |
γ leverage Additional response to negative shocks | 1.0000 | 16.64*** |
δ power Transformation power | 0.8354 | 2.64*** |
Persistence:
0.709
Half-life:
2 days
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