Bitcoin Spot ETFs Suffer $903M Weekly Net Outflow as BlackRock’s IBIT Leads with $174M Inflow

According to SoSoValue data covering September 22–26, the Bitcoin spot ETF complex recorded a week-over-week net outflow of $903 million. BlackRock’s IBIT was the only fund to post a weekly net inflow, receiving $174 million and bringing its cumulative inflows to $60.82 billion. Fidelity’s FBTC led redemptions with a weekly net outflow of $738 million, while ARK/21Shares’ ARKB experienced $123 million in net withdrawals.

At the aggregate level, total net asset value across Bitcoin spot ETFs stands at $143.56 billion, with an ETF net asset ratio of 6.59% of Bitcoin market capitalization and cumulative net inflows of $56.81 billion to date. These metrics outline current AUM concentration and week-over-week flow dynamics among major issuers without forecasting performance.