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	param	t-stat
$ω$	0.3161	12.77
$α$	0.1021	7.31
$β$	0.8052	66.01
$γ$	0.0431	2.71

V-Lab

HCA Healthcare Inc GJR-GARCH Volatility Analysis

Volatility Prediction for Friday, February 13th, 2026:39.03% (-3.13%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other HCA Healthcare Inc Analyses