Overview
- U.S. spot Bitcoin and Ethereum ETFs drew a combined $2.61 billion over the five trading days ending Friday, August 21, marking their strongest weekly intake since October 2025.
- Bitcoin-focused funds led the move, taking in $1.92 billion or about 73% of the total, while Ether ETFs added $697 million across the same period.
- BlackRock’s iShares products dominated daily flows, accounting for roughly 79% of Friday’s combined inflows and concentrating buying power in a small number of issuers.
- Large ETF purchases coincided with sharp price gains—Bitcoin rose above $76,000 and Ether climbed into the $2,400–$2,500 range—while on-chain data showed falling exchange-held ETH that tightened available supply.
- The week reverses earlier summer outflows and brings total ETF assets to roughly $96.07 billion for Bitcoin and $14.30 billion for Ether, but analysts warn sustained gains will need continued inflows because issuer concentration and creation/redemption mechanics can amplify short-term swings.