BlackRock’s iShares Bitcoin Trust (IBIT) is the dominant force in the US spot Bitcoin exchange-traded fund (ETF) market, holding half of the 12 products’ total assets under management (AUM).

Data from Dune Analytics shows that the spot Bitcoin ETFs collectively manage over $113 billion. IBIT leads the pack with $56 billion in AUM, reflecting strong institutional demand for the Bitcoin-backed investment product.

Following IBIT, Fidelity’s Wise Origin Bitcoin Fund (FBTC) holds around $20 billion, while Grayscale’s Bitcoin fund (GBTC) holds a similar amount. The two funds control 17.5% of the market each.

Meanwhile, Ark 21 Shares’ ARKB holds $5 billion in assets, while Grayscale’s mini Bitcoin fund completes the top five with $4.1 billion AuM.

These funds’ strong performance highlights the growing institutional interest and expanding role in mainstream crypto adoption. These products are designed to provide investors with regulated exposure to Bitcoin without requiring direct ownership or management of private keys.

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