U.S. spot Ethereum ETFs pulled in roughly $824 million in net inflows for the week ending August 28, 2026, while spot Bitcoin ETFs added $924.5 million over the same period. Combined, the two categories drew nearly $1.75 billion in a single week, extending what is shaping up as one of the strongest months these products have ever recorded.
The combined $1.75 billion week follows an even bigger prior stretch, and it did not come without a wobble: Bitcoin ETFs shed money on the final trading session even as the category closed the week firmly in the green.
BlackRock leads both categories
BlackRock's IBIT contributed $938.3 million of the weekly Bitcoin total on its own. On the Ether side, BlackRock's ETHA similarly led inflows among competing products.
Bitcoin ETFs did hit one speed bump. They posted a $201.9 million outflow on the final session, snapping a nine-day positive inflow streak that had pushed the running total past $3 billion. Still, the single bad session did not erase the week's gains, and the overall weekly number stayed positive.
Ether ETFs, meanwhile, extended their own inflow streak through the period without a similar reversal. Cumulative inflows for Ether ETFs this week landed between $815.7 million and $824 million, depending on which data provider is checked, with SoSoValue and Farside Investors both tracking the category.
Prices climb alongside the flows
Price rallies are doing a lot of the work behind the inflows. Bitcoin climbed close to the $80,000 level during the period. Ether, meanwhile, pushed past $2,500 over the same stretch.
When prices rise, investors who had been sitting on the sidelines tend to reconsider. Ether ETFs launched in 2025 and have gained traction quickly relative to where Bitcoin ETFs stood at the same stage of life, and the weekly $824 million figure, if sustained, would put Ether ETF inflows on a trajectory that compresses the gap with Bitcoin products faster than most observers initially expected.
A mechanical link between flows and price
The prior week set an even higher bar: Bitcoin ETFs drew $1.92 billion and Ether ETFs collected $697 million. Bitcoin ETFs have now accumulated roughly $54.63 billion in cumulative net inflows since their January 2024 launch. Total net assets for the category are approaching the $97 billion to $100 billion range.
Sustained inflows at this scale carry a mechanical price-support function. When authorized participants create new ETF shares, they buy the underlying asset, so a week with $924 million in Bitcoin ETF inflows means roughly $924 million in Bitcoin had to be purchased in the open market to back those shares. That same relationship can run in reverse, as Bitcoin ETFs' single-day $201.9 million outflow already showed.
Source: Crypto Briefing
Trading involves risk.
Risk Disclaimer
