Key Takeaways
- • US Bitcoin spot ETFs recorded $189.31 million in net inflows on a single day, marking a second consecutive day of positive flows, with BlackRock's IBIT capturing 76% of total inflows at $143.57 million.
- • Ethereum spot ETFs posted $71.47 million in net inflows, extending a four-day streak of positive flows, with BlackRock's ETHA commanding approximately 90% of total Ethereum ETF capital at $64.68 million.
- • Combined Bitcoin and Ethereum spot ETF net inflows demonstrate pronounced capital concentration in BlackRock products, which accounted for the majority of flows across both asset classes.
- • Bitcoin spot ETF inflows extended to a sixth consecutive day of combined net inflows across the sector, signaling sustained institutional demand despite VanEck's HODL recording $16.92 million in outflows.
- • Secondary sources indicate the six-day inflow streak attracted $203.1 million in a single day and $2.615 billion on a weekly basis through August 21, 2026, representing significant institutional capital deployment into cryptocurrency spot products.
Summary
Bitcoin spot ETFs attracted $189.31 million in net inflows on the trading day, representing the second consecutive day of positive flows. BlackRock's IBIT led the category with $143.57 million, capturing approximately 76% of total Bitcoin ETF inflows. Fidelity's FBTC contributed $23.92 million, Ark Invest's ARKB added $19.73 million, and Bitwise's BITB brought in $16.15 million, with Grayscale's Mini BTC recording an additional $2.86 million. VanEck's HODL product was the sole significant outlier, recording net outflows of $16.92 million during the period.
Ethereum spot ETFs similarly demonstrated positive momentum, posting $71.47 million in net inflows and marking a fourth consecutive day of positive flows. BlackRock's ETHA captured $64.68 million, representing approximately 90% of total Ethereum ETF inflows—a concentration level that underscores the dominance of BlackRock's suite of cryptocurrency products in attracting institutional capital. The distribution of flows reveals a clear preference among institutional investors for established providers, particularly BlackRock, which maintained substantial market share across both asset classes.
Broader flow data indicates that Bitcoin and Ethereum spot ETFs collectively extended their positive inflow streak to six consecutive trading days, attracting $203.1 million in a single day and accumulating $2.615 billion in combined weekly net inflows through August 21, 2026. This sustained pattern signals institutional confidence in spot cryptocurrency exposure and suggests that recent market conditions have supported renewed capital deployment into regulated digital asset investment vehicles.
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