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	param	t-stat
$ω$	0.5512	6.75
$α$	0.1151	7.59
$β$	0.8269	31.78
$γ_{1}$	0.0995	2.37
$γ_{2}$	-0.1115	-1.64
$γ_{3}$	0.0291	0.50
$γ_{4}$	-0.1419	-2.51
$γ_{5}$	0.2406	4.28
$γ_{6}$	-0.1987	-3.99
$γ_{7}$	0.1767	2.80
$γ_{8}$	-0.1586	-1.74
$γ_{9}$	0.1073	0.93
$γ_{10}$	-0.1364	-0.88

V-Lab

Avista Corp Spline-GARCH Volatility Analysis

Volatility Prediction for Tuesday, February 17th, 2026:20.37% (+0.72%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

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