BlackRock's IBIT Extends Lead as Largest Spot Bitcoin ETF

BlackRock's iShares Bitcoin Trust has extended its lead over rival spot Bitcoin exchange-traded funds, with assets under management pulling further ahead of Fidelity's FBTC, Grayscale's GBTC and the Bitwise BITB. Since launching in January 2024, IBIT has become one of the fastest asset-gathering ETFs in US history.

Analysts attribute the outperformance to the firm's institutional distribution network, aggressive fee positioning and the depth of its authorised-participant roster, which has narrowed premiums and discounts on the fund. Trading volume on IBIT routinely accounts for more than half of all spot Bitcoin ETF activity on US exchanges.

Advisers surveyed by Bloomberg Intelligence say client allocations to spot BTC products, while still small in aggregate, are becoming a standard talking point in quarterly reviews. That shift, they argue, is what separates this cycle from previous attempts to bring Bitcoin into mainstream portfolios.