US spot Bitcoin exchange-traded funds experienced net outflows of $462.7 million for the week ending September 14, 2026, according to Farside Investors. The outflows occurred across Tuesday through Friday, following three consecutive weeks of inflows. The largest single-day withdrawal came on Thursday, when Bitcoin ETFs saw net outflows of $282.7 million, the biggest daily outflow since July. Friday’s outflow slowed to $13.2 million, extending the negative streak to four trading days, as reported by SoSoValue.
ARK 21Shares Bitcoin ETF led the weekly withdrawals with $234.2 million in net outflows, followed by Grayscale’s Bitcoin Trust ETF at $129.1 million. BlackRock’s iShares Bitcoin Trust ETF recorded $52.5 million in outflows, and Fidelity’s Wise Origin Bitcoin Fund lost $50.7 million. Despite the weekly reversal, spot Bitcoin ETFs remained in positive flow territory for September, with about $307.3 million in net inflows through Friday.
On the Ether side, US spot Ether ETFs posted net inflows of $196.9 million for the week. The funds showed mixed flows earlier, with $24.3 million in outflows on Tuesday, $34.7 million in inflows on Wednesday and $29.9 million in outflows on Thursday. Friday turned positive, delivering $216.4 million in net inflows. BlackRock’s iShares Ethereum Trust ETF led Friday’s inflows with $148.8 million, while the 21Shares Core Ethereum ETF added $29.1 million.
