US spot Bitcoin exchange-traded funds (ETFs) recorded $462.7 million in net outflows last week, ending a three-week run of inflows. US spot Ether ETFs moved in the opposite direction, recording $196.9 million in net inflows over the same four-day period.

According to Farside Investors, Bitcoin ETF withdrawals occurred during all four trading sessions from Tuesday through Friday. The reversal followed the strongest three-week inflow run of 2026, which ended after the funds lost $166.8 million during the first two days of the holiday-shortened week.

Selling intensified Thursday, when US spot Bitcoin ETFs posted $282.7 million in net outflows, their largest single-day withdrawal since July. Outflows slowed to $13.2 million Friday, but the result extended the negative streak to four consecutive trading days, according to SoSoValue.

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, while BlackRock’s iShares Bitcoin Trust ETF recorded $52.5 million in outflows. Fidelity’s Wise Origin Bitcoin Fund lost $50.7 million over the week.

Despite the weekly reversal, US spot Bitcoin ETFs remained in positive flow territory for September, with approximately $307.3 million in cumulative net inflows through Friday.

Ether ETFs record weekly inflows

US spot Ether ETFs posted $196.9 million in net inflows during the same four-day period, according to Farside Investors.

The Ether funds recorded mixed results earlier in the week: $24.3 million in outflows Tuesday, $34.7 million in inflows Wednesday and $29.9 million in outflows Thursday. The weekly total turned positive Friday, when the funds attracted $216.4 million in net inflows.

BlackRock’s iShares Ethereum Trust ETF led Friday’s inflows with $148.8 million, followed by the 21Shares Core Ethereum ETF with $29.1 million.