# BlackRock’s IBIT Held $66.37 Billion in Assets as of Oct. 20 By Enna Lee Canonical URL: https://www.tokenpost.com/news/investing/37393 Published: 2026-10-22T03:24:11.000Z Updated: 2026-10-22T03:24:11.000Z Section: Investing > The trust’s Oct. 19 inflow was its largest since Oct. 7, 2025, while withdrawals from other funds reduced the U.S. spot Bitcoin ETF group’s combined gain. BlackRock’s iShares Bitcoin Trust (IBIT) had $66.37 billion in net assets as of Oct. 20, making it the largest spot Bitcoin (BTC) exchange-traded fund. The figure reflects the trust’s asset base on that date, while a daily net inflow measures flows during one session. The asset total followed a $665.16 million net inflow into IBIT on Oct. 19. That was its largest daily inflow since Oct. 7, 2025, when the trust recorded $899.4 million. A [fund-by-fund account of the Oct. 19 session]() details the flows. U.S. spot Bitcoin ETFs recorded about $527 million in combined net inflows on Oct. 19, less than IBIT’s individual total. Fidelity’s Wise Origin Bitcoin Fund (FBTC) had $83.6 million in outflows, and Grayscale’s GBTC had $54.9 million in outflows, reducing the group’s net gain. ## Links in this article - [fund-by-fund account of the Oct. 19 session](https://www.tokenpost.com/news/investing/35701)