BlackRock's iShares Bitcoin Trust took in $183.41 million from clients in its latest single-day purchase, extending a run of nine-figure inflow days that has defined the firm's Bitcoin strategy in 2026. The buy pushes BlackRock's July inflows past $700 million and keeps IBIT's share of the spot Bitcoin ETF market at 50-60%.
BlackRock clients bought $183.41 million worth of Bitcoin through the firm's iShares Bitcoin Trust (IBIT), the latest in a string of nine-figure inflow days that have defined BlackRock's Bitcoin strategy in 2026. The purchase adds another data point to a pattern of steady institutional investor buying through regulated vehicles.
A pattern that's hard to ignore
On July 6, BlackRock clients invested $209 million into IBIT, contributing to roughly $266 million in total US spot Bitcoin ETF inflows that day. BlackRock alone accounted for nearly 80% of all institutional Bitcoin buying through ETFs that session.
Nine days later, on July 15, clients purchased $139 million worth of Bitcoin via IBIT, with an additional $80.82 million inflow representing 75% of that day's total ETF flows. Then around July 22, another $163 million purchase hit the books. Add the latest $183 million buy, and IBIT has taken in well over $700 million across just a handful of days in July alone.
BlackRock's Bitcoin empire by the numbers
By mid-July, BlackRock had surpassed 734,000 BTC under its custodianship. IBIT maintains an estimated 50-60% market share of all spot Bitcoin ETF assets in 2026, with every other fund, from Fidelity's FBTC to ARK's ARKB, competing for the remainder.
Earlier this year, on January 5, 2026, BlackRock clients acquired 3,948 BTC for $372 million, a purchase that remains one of the largest single-day buys on record for any spot Bitcoin ETF.
Concentration becomes the risk to watch
The pattern also raises a concentration risk. When one entity controls more than half of all ETF-based Bitcoin exposure, any change in BlackRock's strategy, fee structure, or regulatory status could send shockwaves through the market.
Source: Crypto Briefing
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