Bitcoin and Ethereum ETFs post 2026's strongest inflow week

US spot Bitcoin ETFs received $1.918 billion during the five trading sessions through Aug. 21. Ethereum ETFs attracted $697.2 million. Bitcoin ETFs recorded inflows on every day of the week. Their cumulative net subscriptions since their January 2024 debut reached $53.7 billion. Bitcoin climbed from roughly $62,300 to nearly $80,000. Ethereum rose above $2,500. The rally followed falling Treasury yields and new US policy activity on crypto. The SEC proposed Regulation Crypto Assets on Aug. 18. The CFTC held its first Innovation Advisory Committee meeting two days later. Bitcoin reclaimed its 200-day moving average during the advance. Billions of dollars in leveraged short positions were liquidated. Ecoinometrics said ETF buying accelerated during the final sessions of the week. The firm estimated a Bitcoin supported range of roughly $67,000 to $78,000 and fair value near $72,000. The article said one strong week does not establish a lasting reversal. The next test is whether ETF subscriptions remain positive after Bitcoin's weekly advance and the liquidation of bearish positions subsides.