Bitcoin ETFs Attract $987M Weekly Inflow, Led by BlackRock IBIT
What happened: U.
What happened: U.S. spot bitcoin ETFs saw $986.9 million in net inflows for the week ending September 4, 2026, the third consecutive week of positive flows. BlackRock’s IBIT fund accounted for $691.5 million (about 70% of the total), while ARK 21Shares ARKB added $138 million. August’s total net inflows reached $3.52 billion, the largest monthly figure since September 2025. However, weekly trading volume fell to $14.5 billion from the previous week’s $19 billion.
Why it matters: The strong inflows signal renewed institutional interest in bitcoin, even as trading activity cools. The divergence between rising inflows and falling volume suggests that large players, rather than retail investors, are driving the market. This concentration could amplify volatility if institutional sentiment shifts.
Source: The Block