v3.26.1
Statements 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 $ (44,984) $ (68,939)
Net realized gain on investment in Bitcoin sold to pay expenses 34,495 57,881
Net realized gain on investment in Bitcoin sold for redemption of Shares 816,008 1,029,931
Net change in unrealized appreciation/depreciation on investment in Bitcoin (3,988,628) (3,218,384)
Net decrease in net assets resulting from operations (3,183,109) (2,199,511)
Decrease in net assets from capital share transactions:    
Shares issued 224,028 192,570
Shares redeemed (1,048,617) (1,227,181)
Net decrease in net assets resulting from capital share transactions (824,589) (1,034,611)
Total decrease in net assets from operations and capital share transactions (4,007,698) (3,234,122)
Net assets:    
Beginning of period 14,497,437 19,182,244
End of period $ 10,489,739 $ 15,948,122
Change in Shares outstanding:    
Shares outstanding at beginning of period 211,920,100 258,950,100
Shares issued 3,690,000 2,480,000
Shares redeemed (16,890,000) (16,650,000)
Net decrease in Shares (13,200,000) (14,170,000)
Shares outstanding at end of period 198,720,100 244,780,100