Statements of Operations - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
EXPENSES
Sponsor's Fee	$ 741,934	$ 793,532	$ 2,291,519	$ 2,348,395
Total expenses	742,000	793,000	2,292,000	2,348,000
Net investment loss	(742,000)	(793,000)	(2,292,000)	(2,348,000)
REALIZED AND UNREALIZED GAINS / (LOSSES)
Realized loss on platinum transferred to pay expenses	(244,000)	(220,000)	(619,000)	(660,000)
Realized loss on platinum distributed for the redemption of Shares	(4,049,000)	(4,463,000)	(28,583,000)	(16,357,000)
Change in unrealized (loss) / gain on investment in platinum	(15,334,000)	4,451,000	(27,030,000)	22,469,000
Total (loss) / gain on investment in platinum	(19,627,000)	(232,000)	(56,232,000)	5,452,000
Change in net assets from operations	$ (20,369,000)	$ (1,025,000)	$ (58,524,000)	$ 3,104,000
Net (decrease) / increase in net assets per Share	$ (3.26)	$ (0.18)	$ (9.82)	$ 0.54
Weighted average number of Shares (in Shares)	6,243,478	5,820,109	5,959,341	5,729,304