BlackRock’s iShares Bitcoin Trust (IBIT) led the U.S. spot Bitcoin ETF market for the week ending October 4, 2026, with $292 million in net inflows. The broader market recorded $82.9 million in net inflows, indicating that new investment was concentrated in IBIT.
Fidelity’s Wise Origin Bitcoin Fund (FBTC) saw $167.9 million in outflows during the same week. IBIT attracted $196 million on October 1 alone.
Analysts suggest IBIT’s larger asset base and greater liquidity make it more attractive to institutional investors and better suited to large trades.