BlackRock’s IBIT Held $66.37 Billion in Assets as of Oct. 20

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.