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	param	t-stat
$ω$	0.0536	4.51
$α$	0.2185	8.02
$β$	0.7393	23.00
$γ$	1.0000	1,675.03
$δ$	0.5000	7.26

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Calamos S&P 500 STR ALT PRT APARCH Volatility Analysis

Volatility Prediction for Monday, February 9th, 2026:2.17% (-0.72%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Calamos S&P 500 STR ALT PRT Analyses