U.S. spot Bitcoin and Ether ETFs recorded their strongest week since October 2025, attracting a combined $2.61 billion in fresh investor money over five consecutive trading sessions.
Bitcoin ETFs led the way, bringing in approximately $1.92 billion during the week. That represented about 73% of all inflows across the two major crypto ETF categories.
The strong performance capped a week of steady demand. On Aug. 21 alone, spot Bitcoin ETFs attracted $307 million in net inflows, extending their streak of positive flows to five straight sessions.
BlackRock’s iShares Bitcoin Trust (IBIT) dominated the final trading day, pulling in $239 million, nearly 78% of the day’s total. Fidelity’s Wise Origin Bitcoin Fund (FBTC) followed with inflows of just over $30 million.
After the latest additions, IBIT’s total net inflows climbed to $62.43 billion, while FBTC surpassed $10 billion. Combined, U.S. spot Bitcoin ETFs now hold around $96.07 billion in net assets.
The weekly inflow marks a major turnaround from the previous week, when investors pulled nearly $390 million from Bitcoin ETFs. The shift represents an improvement of more than $2.3 billion in just one week.
Ether ETFs also delivered an impressive performance, attracting nearly $700 million over the same five-session period.
On Aug. 21, spot Ether ETFs brought in $185 million, extending their own streak of positive inflows to five straight trading days.
BlackRock’s iShares Ethereum Trust (ETHA) led the category with $151 million in inflows during the final session. Grayscale’s Ethereum Mini Trust followed with $11.5 million.
Since launch, ETHA has accumulated more than $12 billion in net inflows. Across the entire category, U.S. spot Ether ETFs now hold about $14.3 billion in net assets.
The strong week for Ether ETFs came after a small net outflow during the previous week, making the latest result a significant recovery for the sector.
Investor demand increased as both Bitcoin and Ether posted strong price gains.
Bitcoin surged above $76,000 during the week after breaking out of a long trading range. The rally triggered large liquidations of bearish positions and fueled renewed interest from institutional investors.
Ether also enjoyed a strong move higher, climbing above $2,400 after recording one of its biggest daily gains of the year. The price rally coincided with rising ETF demand and growing interest from large investors.
BlackRock remained the biggest winner during the final trading session. Its Bitcoin and Ether funds collected a combined $390 million, accounting for nearly 80% of all crypto ETF inflows recorded that day.
By the end of Aug. 21, U.S. spot Bitcoin and Ether ETFs held a combined $110.36 billion in net assets. Bitcoin funds accounted for $96.07 billion, while Ether funds held approximately $14.3 billion.
The latest inflow streak highlights renewed institutional interest in cryptocurrencies and marks the strongest week for Bitcoin and Ether ETFs in nearly a year.
