U.S. Spot Bitcoin ETFs See Biggest Weekly Inflow Since October 2025

U.S. spot Bitcoin ETFs logged their strongest weekly inflows since October 2025, pulling in nearly $2 billion last week as Bitcoin rebounded. According to analyst Darkfost, the funds accumulated about 26,000 BTC over the past 30 days, helping re-establish a more visible source of short-term demand. Bloomberg's Eric Balchunas also put last week's intake at close to $2 billion, calling it the best week since October 2025. On Aug. 24, spot Bitcoin ETFs brought in about $338 million in net inflows. BlackRock's iShares Bitcoin Trust (IBIT) led the day with $209 million. Despite the recent buying, ETFs are still net sellers for 2026 to date, with holdings down roughly 92,000 BTC since January. Darkfost said several more weeks of similar inflows would be needed to rebuild ETF Bitcoin holdings back to pre-2026 levels. He added that while Michael Saylor has paused purchases for several weeks, ETF accumulation has continued. Latest daily figures showed total spot Bitcoin ETF assets at $79.16 billion. Cumulative net inflows stood at $54.50 billion, equivalent to 681,290 BTC. Coinglass data for Aug. 24 showed net inflows of $337.60 million, or about 4,340 BTC, with combined daily trading volume across the funds at $8.23 billion. BlackRock also topped spot Ether ETF flows on Aug. 24, drawing $90.92 million of net inflows. In total, U.S. spot Ether ETFs attracted $116 million on the day. The supplied data puts BlackRock's assets under management at about $15.3 trillion. Balchunas noted the strong week coincided with Bitcoin's move from roughly $64,000 to $77,000, alongside a shift from repeated outflows to renewed positive flows. Coinglass charts show heavy ETF accumulation in late 2024, including single-day inflows near $1.35 billion. In 2025, several days exceeded $500 million as Bitcoin advanced, but late 2025 and early 2026 saw more frequent outflows, with some red bars nearing $800 million to $900 million as prices fell. Recent readings now show predominantly positive ETF flows alongside the market recovery, with daily net inflows back above $300 million. Darkfost said the buying has strengthened short-term demand, though the 2026 balance remains negative.