v3.26.1
STATEMENTS OF CHANGES IN NET ASSETS - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Jun. 30, 2026
Sep. 30, 2025
Jun. 30, 2025
Sep. 30, 2024
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
(Decrease) increase in net assets from operations:              
Net investment loss $ (847) $ (1,372) $ (959) $ (782) $ (4,811) $ (3,665) $ (2,469)
Net realized gain (loss) on investment in BCH (85) 412 6 (86) 1,037 (17) (450)
Net change in unrealized appreciation/depreciation on investment in BCH (103,541) 15,979 84,506 (18,005) (122,629) 48,646 23,205
Net (decrease) increase in net assets resulting from operations         (126,403) 44,964 20,286
(Decrease) increase in net assets from capital share transactions:              
Shares issued         0 22,983 22,716
Net increase in net assets resulting from capital share transactions         0 22,983 22,716
Total (decrease) increase in net assets from operations and capital share transactions         (126,403) 67,947 43,002
Net assets:              
Beginning of year   $ 202,961   $ 135,014 202,961 135,014 92,012
End of year $ 76,558   $ 202,961   $ 76,558 $ 202,961 $ 135,014
Change in Shares outstanding:              
Shares outstanding at beginning of year   47,123,300   40,366,000 47,123,300 40,366,000 34,812,900
Shares issued         0 6,757,300 5,553,100
Net increase in Shares         0 6,757,300 5,553,100
Shares outstanding at end of year 47,123,300   47,123,300   47,123,300 47,123,300 40,366,000