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	param	t-stat
$ω$	1.9090	3.55
$α$	0.6338	3.16
$β$	0.0528	1.53
$γ_{1}$	0.3166	0.55
$γ_{2}$	0.0680	0.07
$γ_{3}$	-1.2785	-1.34
$γ_{4}$	2.3910	2.18
$γ_{5}$	-2.2349	-2.26
$γ_{6}$	1.0582	1.30
$γ_{7}$	-0.8720	-1.10
$γ_{8}$	1.3928	1.60
$γ_{9}$	-2.3263	-2.55
$γ_{10}$	2.7618	2.59

V-Lab

Tantech Holdings Ltd Spline-GARCH Volatility Analysis

Volatility Prediction for Friday, February 13th, 2026:98.05% (-22.83%)

Date Range:

Parameter Estimates

News Impact Curve

Volatility Forecasts

Other Tantech Holdings Ltd Analyses