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Schedules of Investments $ in Thousands		Dec. 31, 2017 USD ($) oz	Dec. 31, 2016 USD ($) oz
Investment Holdings [Line Items]
Investment in palladium (oz) | oz		228,863.1	263,819.3
Cost		$ 155,318	$ 169,185
Fair Value		$ 241,679	$ 178,342
% of Net Assets		100.05%	100.05%
Less liabilities		$ (124)	$ (90)
Less liabilities, % of Net Assets		(0.05%)	(0.05%)
Net assets	[1]	$ 241,555	$ 178,252
Net assets, % of Net Assets		100.00%	100.00%
Palladium [Member]
Investment Holdings [Line Items]
Investment in palladium (oz) | oz		228,863.1	263,819.3
Cost		$ 155,318	$ 169,185
Fair Value		$ 241,679	$ 178,342
% of Net Assets		100.05%	100.05%
[1] Shares issued and outstanding at December 31, 2017 were 2,400,000 and at December 31, 2016 were 2,750,000. Net asset value per share at December 31, 2017 was $100.65 and at December 31, 2016 was $64.82.

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