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Statements of Assets and Liabilities (Unaudited) (Parentheticals) - USD ($)
$ / shares in Thousands
Mar. 31, 2026
Dec. 31, 2025
Investment in gold bullion, cost $ 5,098,699,777 $ 4,282,709,201
Shares, par value (in dollars per share) $ 0 $ 0
Shares, issued (in shares) 155,750,000 140,400,000