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	param	t-stat
$ω$	0.0339	26.29
$α$	0.0842	28.85
$β$	0.9060	326.49
$γ$	0.8907	24.97
$δ$	1.0309	25.66

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

Volatility Prediction for Friday, February 13th, 2026:15.05% (+3.04%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Vanguard S&P Mid-Cap 400 ETF Analyses