v3.25.2
Statement of Changes in Net Assets - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
(Decrease) increase in net assets from operations:          
Net investment loss $ (1,179) $ (1,973) $ (2,690) $ (3,964)  
Net realized gain on investment in ETC 653 1,436 1,642 2,886 $ 5,003
Net change in unrealized appreciation on investment in ETC (1,424) (121,879) (95,443) 15,847 31,251
Net (decrease) increase in net assets resulting from operations (1,950) (122,416) (96,491) 14,769  
Increase in net assets from capital share transactions:          
Shares issued 0 0 0 0  
Net increase in net assets resulting from capital share transactions 0 0 0 0  
Total (decrease) increase in net assets from operations and capital share transactions (1,950) (122,416) (96,491) 14,769  
Net assets:          
Beginning of period 188,514 391,143 283,055 253,958 253,958
End of period $ 186,564 $ 268,727 $ 186,564 $ 268,727 $ 283,055
Change in Shares outstanding:          
Shares outstanding at beginning of period 13,993,800 13,993,800 13,993,800 13,993,800 13,993,800
Shares issued 0   0 0  
Net increase in Shares 0   0 0  
Shares outstanding at end of period 13,993,800 13,993,800 13,993,800 13,993,800 13,993,800