v3.26.1
Statement of Changes in Net Assets - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Decrease in net assets from operations:    
Net investment loss $ (660) $ (1,511)
Net realized gain on investment in ETC 150 989
Net change in unrealized appreciation/depreciation on investment in ETC (36,076) (94,019)
Net decrease in net assets resulting from operations (36,586) (94,541)
Increase in net assets from capital share transactions:    
Shares issued 0 0
Net increase in net assets resulting from capital share transactions 0 0
Total decrease in net assets from operations and capital share transactions (36,586) (94,541)
Net assets:    
Beginning of period 126,004 283,055
End of period $ 89,418 $ 188,514
Change in Shares outstanding:    
Shares outstanding at beginning of period 13,993,800 13,993,800
Shares issued 0 0
Net increase in Shares 0 0
Shares outstanding at end of period 13,993,800 13,993,800