| Schedule of Investments [Text Block] |
iShares® Bitcoin Trust ETF
Schedules of Investments (Unaudited)
At June 30, 2025 and December 31, 2024
| Description | | Quantity | | | Cost | | | Fair Value | |
| Bitcoin | | | 696,875 | | | $ | 53,376,118,281 | | | $ | 74,720,071,026 | |
| | | | | | | | | | | | | |
| Total Investments — 100.02% | | | | | | | | | | | 74,720,071,026 | |
| Liabilities in Excess of Other Assets — (0.02)% | | | | | | | | | | | (14,513,659 | ) |
| Net Assets — 100.00% | | | | | | | | | | $ | 74,705,557,367 | |
| Description | | Quantity | | | Cost | | | Fair Value | |
| Bitcoin | | | 551,918 | | | $ | 37,372,942,571 | | | $ | 51,530,013,513 | |
| | | | | | | | | | | | | |
| Total Investments — 100.02% | | | | | | | | | | | 51,530,013,513 | |
| Liabilities in Excess of Other Assets — (0.02)% | | | | | | | | | | | (10,446,966 | ) |
| Net Assets — 100.00% | | | | | | | | | | $ | 51,519,566,547 | |
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