Bitcoin Spot ETFs Lose $463M as Ether ETFs Attract $197M

US spot Bitcoin exchange-traded funds (ETFs) saw a sharp weekly reversal, posting $462.7 million in net outflows after three straight weeks of inflows. The shift came across all four trading sessions from Tuesday through Friday, according to data from Farside Investors, with the selling extending the slide into a fourth consecutive day. Ether ETFs moved in the opposite direction over the same period, recording nearly $197 million in net inflows. Farside Investors reported that US spot Ether products drew $196.9 million during the four-day window, even as flows were choppy earlier in the week. Key takeaways US spot Bitcoin ETFs recorded $462.7 million net outflows for the four-session week, reversing a three-week inflow streak. Bitcoin ETF outflows were broad-based across sessions, with Thursday’s $282.7 million withdrawal the largest daily outflow since July. Despite the weekly reversal, spot Bitcoin ETFs remain net positive for September, with $307.3 million in inflows through Friday. US spot Ether ETFs delivered $196.9 million in net inflows, led on Friday by BlackRock’s iShares Ethereum Trust ETF with $148.8 million. Bitcoin ETFs reverse course after three-week inflow run According to Farside Investors, Bitcoin ETF outflows unfolded across every session from Tuesday to Friday. The withdrawal week followed what the market data described as the strongest three-week inflow stretch of 2026, which ended after funds shed $166.8 million during the first two days of the holiday-shortened week. The pressure intensified on Thursday, when US spot Bitcoin ETFs posted net outflows of $282.7 million—reported as the largest daily withdrawal since July. Friday’s outflow slowed to $13.2 million, but SoSoValue data indicates it still extended the streak of negative daily flows to four trading days. That combination—one very large day followed by continued (though smaller) withdrawals—helps explain why the weekly total turned decisively negative. Investors watching ETF flows typically treat these reversals as short-term signals of changing risk appetite, especially when they break prior momentum rather than merely pausing inflows. Which funds drove weekly Bitcoin outflows Farside Investors’ breakdown shows that ARK 21Shares’ Bitcoin ETF led the weekly withdrawals with $234.2 million in net outflows. Grayscale’s Bitcoin Trust ETF followed with $129.1 million. BlackRock’s iShares Bitcoin Trust ETF also saw withdrawals, losing $52.5 million over the week. Fidelity’s Wise Origin Bitcoin Fund recorded net outflows of $50.7 million. Together, the results suggest the reversal was not isolated to a single product—multiple major issuers posted negative weekly flow. While daily volatility can be normal for ETF baskets, the fact that several large operators posted sizable weekly declines is notable for traders who monitor whether outflows are concentrated (often linked to specific investor behavior) or distributed across the complex.