US spot Bitcoin and Ether ETFs recorded a combined $2.6 billion in net inflows for the week ending August 21, their strongest weekly performance since October 2025 and the largest weekly total of 2026. Bitcoin ETFs led with nearly $1.9 billion, about 73% of the haul, while Ether ETFs added roughly $697 million, their largest weekly intake of the year. Trading volume across the funds surpassed $29 billion, more than tripling from the prior week, when the complex saw about $392 million in net outflows—a roughly $3 billion swing. Bitcoin ETF trading volume alone reached about $22.1 billion, and net assets under management climbed to $96.1 billion, up 25.4%, as cumulative Bitcoin ETF inflows since early 2024 reached about $53.7 billion. Despite the blockbuster week, both Bitcoin and Ether ETFs remain negative year to date and are tracking toward a first full year of net outflows since inception. The flow rebound accompanied Bitcoin’s climb to $79,500, its highest level since May 15.