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	param	t-stat
$ω$	0.0466	17.69
$α$	0.0833	38.68
$β$	0.9162	394.40
$γ$	0.2188	8.98
$δ$	1.0979	26.84

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Amgen Inc APARCH Volatility Analysis

Volatility Prediction for Monday, February 23rd, 2026:30.47% (-1.58%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Amgen Inc Analyses