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	param	t-stat
$ω$	0.0331	19.08
$α$	0.0644	20.85
$β$	0.9186	290.79
$γ$	0.3647	12.22
$δ$	1.6174	26.94

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Portland General Electric Co APARCH Volatility Analysis

Volatility Prediction for Friday, February 13th, 2026:14.50% (+0.28%)

Date Range:

Parameter Estimates

News Impact Curve

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