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Schedules of Investments (Unaudited) - Investments (Details)	Sep. 30, 2020 USD ($) oz	Jun. 30, 2020 USD ($) oz	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($) oz	Sep. 30, 2019 USD ($) oz	Jun. 30, 2019 USD ($) oz	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) oz
Silver bullion (Ounce) | oz	549,116,518	498,007,498		362,616,711	383,656,370	323,330,613		317,233,610
Investment in silver bullion, cost	$ 9,925,280,862	$ 8,374,199,813		$ 6,294,157,046	$ 6,656,770,477	$ 5,667,962,993		$ 5,641,558,156
Silver bullion fair value	13,027,789,385			6,543,418,555
Less Liabilities	(5,945,383)			(2,659,990)
Net Assets	$ 13,021,844,002	$ 8,883,456,887	$ 5,505,117,093	$ 6,540,758,565	$ 6,617,148,290	$ 4,919,140,506	$ 4,668,431,637	$ 4,904,036,623

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