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	param	t-stat
$ω$	0.0357	6.70
$α$	0.2292	5.33
$β$	0.7708	17.39
$γ$	0.7577	4.98
$δ$	0.5000	4.78

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Calamos S&P 500 STR AT - MAR APARCH Volatility Analysis

Volatility Prediction for Monday, February 9th, 2026:3.65% (-0.14%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Calamos S&P 500 STR AT - MAR Analyses