BlackRock Dominates as US Spot Bitcoin ETFs Extend Inflow Streak to Eight Days

US spot Bitcoin exchange-traded funds pulled in $232.2 million on Wednesday, extending their run of consecutive daily net inflows to eight sessions as institutional appetite for crypto exposure showed no signs of letting up.

BlackRock's iShares Bitcoin Trust (IBIT) accounted for the overwhelming majority of the day's flows, attracting $200.8 million. Fidelity's FBTC followed with $25.6 million, while Bitwise's BITB took in $6 million. Two other funds, BTC and MSBT, drew $46.8 million and $3.4 million respectively, according to Farside Investors data.

Grayscale's GBTC was the sole fund to register outflows, losing $50.4 million. The remaining products in the category saw no net movement in either direction.

The eight-day streak builds on an already strong August for the asset class. Through the prior session, US spot Bitcoin ETFs had collected $3.03 billion for the month, leaving them just $390 million shy of the October 2025 monthly record with four trading days remaining. Combined net assets across all US spot Bitcoin funds stood at $99.05 billion, approaching the $100 billion threshold.

BlackRock's dominance in the space has been a defining feature since the product category launched. In January, the asset manager reportedly controlled nearly 70% of spot Bitcoin ETF trading volume, with assets under management exceeding $66 billion at that time. The latest inflow data suggests that concentration has persisted, with IBIT capturing more than 86% of Wednesday's total.