Bitcoin and Ethereum ETFs Post Biggest Weekly Inflow in 10 Months

Ten months of underwhelming ETF flows just broke in one direction, and it wasn’t just BlackRock buying.
US spot Bitcoin and Ethereum ETFs pulled in an estimated $2.3 to $2.6 billion over the past week, the strongest stretch since roughly October of last year. The August 19 session alone brought in $517.2 million in net inflows, with BlackRock’s IBIT leading at $284.7 million, but the money wasn’t concentrated in one issuer. Fidelity’s FBTC and Ark’s ARKB both posted meaningful inflows too, and Bitwise’s spot Solana ETF logged $1.6 million of its own, a sign demand may be broadening past just the two largest coins.
That breadth is the more interesting detail than the headline number. A single-issuer inflow spike is often just one large allocator moving, while inflows spread across nearly every tracked issuer looks more like a genuine shift in broad institutional risk appetite than one whale’s trade.
The rally lines up with a broader market-wide move higher this week, so some of this is simply capital chasing price rather than driving it. But a ten-month high in weekly flows, spread this broadly across issuers and even reaching into a Solana product, is a real data point on where institutional allocators are positioning right now, not just a one-day headline.
Want to understand how spot ETF flows actually work as a market sentiment signal? Learn more in the Bitcoin Academy.
