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Statements of Changes in Net Assets - USD ($) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Statements of Changes in Net Assets [Abstract]
Opening balance (in Shares)		2,400,000	2,750,000	2,750,000
Creations (in Shares)		250,000		450,000
Redemptions (in Shares)		(1,250,000)		(800,000)
Closing balance (in Shares)	1,400,000	1,400,000		2,400,000
Opening balance		$ 241,555	$ 178,252	$ 178,252
Net investment loss	$ (210)	(842)	(923)	(1,278)
Realized gain on investment in palladium		30,418		14,603
Change in unrealized gain/(loss) on investment in palladium	14,111	(35,619)	$ 54,846	77,205
Creations		24,277		37,402
Redemptions		(114,467)		(64,629)
Closing balance	$ 145,322	$ 145,322		$ 241,555

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