Spot bitcoin and ether ETFs listed in the United States attracted more than US$ 1 billion in the week from August 3 to 7, the segment's best performance since April, according to SoSoValue data.
Bitcoin funds attracted US$ 853.54 million, the highest volume in nearly four months, with inflows in all sessions. Ether ETFs totaled US$ 244.94 million, also the best result since April.
BlackRock dominates the flows
BlackRock accounted for most of the money. The iShares Bitcoin Trust (IBIT) received about US$ 693 million, more than 80% of the total for bitcoin funds. In ether, the iShares Ethereum Trust (ETHA) attracted about US$ 203 million, equivalent to more than 80% of the category.
Combined, IBIT and ETHA attracted approximately US$ 896 million, more than four-fifths of the nearly US$ 1.1 billion that flowed into the two groups.
Bitcoin funds have accumulated more than US$ 52 billion in net inflows since January 2024 and manage about US$ 80 billion.
Coldcard flaw occurred days earlier
The new demand emerged days after the disclosure of a security flaw in Coldcard hardware wallets. TRM Labs estimated that attackers drained about 1,816 BTC, approximately US$ 116 million, from more than 5,200 addresses starting on July 30. Other estimates point to losses of about US$ 130 million.
Bloomberg Intelligence analyst Eric Balchunas said the episode could strengthen the case for institutional custody among investors seeking long-term exposure to bitcoin. He said that after a failure in hardware designed to keep the asset outside the traditional financial system, the security infrastructure of large institutions could become harder to ignore.
There is no evidence that the attack directly caused the week's inflows, but the episode brought back into focus the trade-off between self-custody and institutional custody.
