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	param	t-stat
$ω$	1.0334	5.52
$α$	0.0795	4.03
$β$	0.9000	39.21
$γ_{1}$	0.0018	0.12

V-Lab

Hennessy Sustainable ETF Zero Slope Spline-GARCH Volatility Analysis

Volatility Prediction for Friday, February 13th, 2026:13.86% (+0.10%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

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