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	param	t-stat
$ω$	0.0263	27.36
$α$	0.0750	14.05
$β$	0.9120	320.90
$γ$	0.8674	8.90
$δ$	1.2410	40.01

V-Lab

Russell 1000 Growth Index APARCH Volatility Analysis

Volatility Prediction for Friday, February 20th, 2026:19.31% (-0.55%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Russell 1000 Growth Index Analyses