Bitcoin Spot ETF Flows Show Surge and Decline in August 2025

Recent data from SoSoValue reveals significant fluctuations in Bitcoin spot ETF flows on August 15, 2025. While the Blackrock ETF IBIT experienced a record-breaking $114 million inflow, the Grayscale GBTC witnessed an outflow of $81.817 million. Despite these shifts, overall net asset value for Bitcoin spot ETFs remains robust at $151.979 billion with an ETF net asset ratio of 6.54% compared to Bitcoin’s market cap. A closer look reveals a cumulative historical net inflow of $54.974 billion.