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	param	t-stat
$ω$	0.1618	10.12
$α$	0.0914	16.27
$β$	0.8682	97.66
$γ$	0.0243	0.84
$δ$	1.0372	13.81

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Spok Holdings Inc APARCH Volatility Analysis

Volatility Prediction for Tuesday, February 17th, 2026:31.47% (+2.28%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

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