$491.5 Million Inflow into US ETFs, Positive for Five Consecutive Trading Days

On August 21, a net inflow of $491.5 million was recorded into US spot Bitcoin (BTC) and Ethereum (ETH) ETFs. This marks five consecutive trading days of positive inflows from August 17 to 21. According to FactSet, the Bitcoin ETF saw an inflow of $307.5 million, while the Ethereum ETF attracted $184 million. The funds were primarily concentrated in BlackRock products, with the BlackRock Bitcoin ETF (IBIT) recording $239.3 million and the BlackRock Ethereum ETF (ETHA) seeing $150.8 million. Over the week from August 17 to 21, the Bitcoin ETF had a net inflow of $1.92 billion, and the Ethereum ETF saw $697.2 million. The combined net inflow for both product categories was approximately $2.6 billion, marking the strongest weekly inflow since October 2025. The previous week had an outflow of $392 million, while weekly trading volumes increased to $22.1 billion for the Bitcoin ETF and $6.9 billion for the Ethereum ETF. While ETF net inflows reflect the flow of funds from institutions and professional investors, it cannot definitively determine the price direction of the underlying assets based solely on daily or weekly inflows. The figures for August 21 confirmed the last period of inflows over five consecutive trading days.

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