US spot Bitcoin ETFs recorded combined net inflows of $82.9 million for the week ended Oct. 4, extending a sharp reversal from heavy outflows earlier in the year. BlackRock’s IBIT led with $292 million in inflows, followed by Ark Invest and 21Shares’ ARKB at $25.5 million and Grayscale Bitcoin Mini Trust BTC at $24.9 million. Fidelity’s FBTC recorded $167.9 million in outflows and Grayscale’s GBTC lost $54.6 million. The weekly total followed roughly $2.39 billion of inflows in the previous week, but was still well above the modest $6.21 million recorded before that. Spot Ethereum ETFs, by contrast, ended the week with approximately $114 million in net outflows, marking their second withdrawal-led week in the past three. Ethereum funds saw $17.10 million of inflows on Monday before recording outflows each subsequent day. Their cumulative net inflows declined from a recent local peak of $13.94 billion to $13.80 billion.