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	param	t-stat
$ω$	0.0356	27.12
$α$	0.0937	36.06
$β$	0.9006	329.15
$γ$	0.8805	31.57
$δ$	0.9162	27.69

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Vanguard S&P Mid-Cap 400 Growth ETF APARCH Volatility Analysis

Volatility Prediction for Friday, February 13th, 2026:18.04% (+2.99%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Vanguard S&P Mid-Cap 400 Growth ETF Analyses