BlackRock’s IBIT Captures 115% of Bitcoin ETF Inflows

BlackRock’s IBIT attracted $277.6 million during a single trading session, equal to roughly 115% of the $242.3 million net inflow recorded across U.S. spot Bitcoin ETFs, according to Farside Investors data. Certain rival funds posted net redemptions the same day.

Fidelity’s FBTC recorded $83.6 million in outflows and Grayscale’s GBTC lost $27.2 million, producing $110.8 million of combined withdrawals. Smaller products — Bitwise’s BITB, ARK 21Shares’ ARKB, VanEck’s HODL, MSBT and Grayscale’s lower-fee Bitcoin fund — drew a combined $75.5 million. After those moves, every fund outside IBIT finished the session with a collective $35.3 million net outflow.

The $242.3 million overall inflow extended a streak of daily net inflows for U.S. spot Bitcoin ETFs to nine trading sessions. From Aug. 17 through the current session, U.S. Bitcoin ETFs have taken in about $3.05 billion; IBIT accounted for roughly $2.3 billion, or about 75.6% of that nine-day total. IBIT recorded inflows in each session during the run.

IBIT launched in January 2024 and has accumulated about $63 billion in cumulative net inflows, managing roughly $62 billion in assets. The broader U.S. spot Bitcoin ETF group has reported about $54.8 billion in cumulative net inflows and holds approximately $100.9 billion in assets. IBIT’s cumulative inflows exceed the category total because historical redemptions from funds such as GBTC have offset subscriptions into BlackRock and other products.

The fund reached $50 billion in assets in about 11 months, the fastest on record, and later passed $70 billion after 341 trading days. Options linked to IBIT, launched in November 2024, have become one of the larger venues for Bitcoin options activity, increasing trading depth around the fund.

Advisers, registered investment advisers, hedge funds, family offices and other institutional investors consider liquidity, trading volume and issuer infrastructure when choosing an ETF. BlackRock oversees more than $10 trillion in global assets and maintains distribution relationships across wealth-management and institutional platforms.

Over the nine-session inflow run, roughly three-quarters of the money entering the U.S. spot Bitcoin ETF market flowed into IBIT, while most rival products experienced net redemptions during the same period.