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Schedule of Investment in Platinum (Details)
$ in Thousands
 9 Months Ended 12 Months Ended
Mar. 31, 2026
USD ($)
oz
Jun. 30, 2025
USD ($)
oz
Schedule of Investments [Abstract]    
Platinum opening balance (in Ounces) | oz 63,137.357 42,625.054
Platinum opening balance | $ $ 85,235 [1] $ 43,136
Platinum contributed (in Ounces) | oz 78,379.027 30,391.246
Platinum contributed | $ $ 156,215 $ 32,318
Platinum distributed (in Ounces) | oz (25,764.876) (9,878.943)
Platinum distributed | $ $ (39,843) $ (9,925)
Change in unrealized depreciation (in Ounces) | oz
Change in unrealized depreciation | $ $ 19,247 $ 19,706
Platinum ending balance (in Ounces) | oz 115,751.508 63,137.357
Platinum ending balance | $ [1] $ 220,854 $ 85,235
[1] Cost of investment in platinum: $182,134 and $65,762, respectively.