Statements of Assets and Liabilities (Unaudited) (Parenthetical) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Mar. 31, 2026	Jun. 30, 2025
Schedule of Investments [Abstract]
Cost of investment in gold bullion	$ 651,945	$ 588,663
Common stock, shares authorized	Unlimited	Unlimited

Cost of the investment.

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