Do Scarce Precious Metals Equate to Safe Harbor Investments? The Case of Platinum and Palladium

Table 5

Summary statistics of ARFIMA-FIGARCH and ARFIMA-FIAPARCH models.

Precious metals	ARFIMA-FIGARCH					ARFIMA-FIAPARCH
	-ARFIMA	ARCH	-FIGARCH	AIC	Log-likelihood	-ARFIMA	ARCH	-FIGARCH	Gamma	AIC	Log-likelihood
Platinum	−0.053; (0.039)	(1,1)	0.482; (0.000)	1.501	−4146.860	−0.054; (0.032)	(1,1)	0.517; (0.000)	−0.090; (0.091)	1.500	−4141.053
Palladium	−0.028; (0.307)	(1,1)	0.443; (0.000)	2.310	−6380.522	−0.028; (0.298)	(1,1)	0.440; (0.000)	−0.029; (0.450)	2.322	−6379.631

Note: , , and are significant at 10, 5, and 1% levels, respectively; values are in parentheses.