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	param	t-stat
$ω$	0.0247	14.57
$α$	0.0532	17.21
$β$	0.9468	299.16
$γ$	0.3918	7.50
$δ$	1.1863	24.13

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Costco Wholesale Corp APARCH Volatility Analysis

Volatility Prediction for Monday, February 23rd, 2026:23.05% (-0.56%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

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