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	param	t-stat
$ω$	0.0306	31.85
$α$	0.0852	21.95
$β$	0.9074	282.76
$γ$	1.0000	15.70
$δ$	0.9882	33.45

V-Lab

State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF APARCH Volatility Analysis

Volatility Prediction for Friday, February 13th, 2026:16.18% (+3.40%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

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