US spot Bitcoin and Ethereum ETFs recorded their strongest inflow week of 2026 as a sharp crypto rally pulled investors back into funds that had struggled to attract sustained demand for much of the year.

Bitcoin ETFs drew $1.918 billion in the five trading sessions through Aug. 21, while funds holding Ethereum attracted $697.2 million, according to SoSoValue data. The combined $2.6 billion intake was the strongest for the two groups in about 10 months.

Bitcoin funds recorded inflows every day during the week, pushing cumulative net subscriptions since their January 2024 debut to $53.7 billion. Notably, the weekly total was also their largest since the market selloff in October 2025.

Meanwhile, Ethereum funds also had their best showing…