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	param	t-stat
$ω$	0.7752	5.65
$α$	0.0533	7.61
$β$	0.9197	89.64
$γ_{1}$	-0.0427	-1.14
$γ_{2}$	0.1571	2.91
$γ_{3}$	-0.2491	-6.55
$γ_{4}$	0.2457	5.59
$γ_{5}$	-0.1955	-3.62
$γ_{6}$	0.1126	2.21
$γ_{7}$	-0.0211	-0.50
$γ_{8}$	-0.0232	-0.63
$γ_{9}$	0.0284	1.17

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Rio Tinto PLC Zero Slope Spline-GARCH Volatility Analysis

Volatility Prediction for Friday, February 20th, 2026:31.60% (+2.23%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Rio Tinto PLC Analyses