The U.S.-listed spot crypto ETFs attracted roughly $1.24 billion in fresh capital between Aug. 31 and Sep. 4.
The lion’s share went to Bitcoin (BTC) funds, which recorded $986.85 million in net inflows and extended their positive streak to a third consecutive week.
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Bitcoin ETFs pull in $3.82 billion over 3 weeks
Inflows into spot Bitcoin ETFs during Aug. 31-Sep. 4 increased by nearly 7% compared with the previous week. Over the past three weeks, the funds have now accumulated $3.82 billion in net new capital, marking their strongest run so far this year.
The last week was hardly smooth, however. Bitcoin ETFs opened Monday with $216.70 million in inflows before posting $236.46 million in net outflows on Tuesday. Momentum then reversed again, with $101.15 million flowing into the products on Wednesday.
Thursday delivered the strongest session of the week, generating $730.87 million in net inflows, followed by another $174.60 million on Friday.
According to SoSoValue, the total net assets held by US spot Bitcoin ETFs reached $101.25 billion by the end of the week. That means the funds now account for approximately 6.33% of Bitcoin’s total market capitalization.
Since their launch, US spot Bitcoin ETFs have generated cumulative net inflows of $55.62 billion.
BlackRock’s IBIT dominated the weekly flows with $691.51 million, representing roughly 70% of all net inflows into Bitcoin ETFs during the period.
The ARK 21Shares Bitcoin ETF ranked second with $137.74 million, followed by Fidelity’s FBTC at $94.88 million. The Grayscale Bitcoin Mini Trust attracted another $88.62 million.
Despite the strong inflow figures, overall trading activity declined. Weekly Bitcoin ETF trading volume fell from almost $19 billion to around $14.5 billion, suggesting that the surge in net buying was not accompanied by a broader increase in turnover.
In August alone, Bitcoin ETFs attracted $3.52 billion, their strongest monthly result since September 2025. Even so, cumulative flows since the beginning of the year remain approximately $1 billion in negative territory.
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Ethereum, XRP and Solana ETFs also post strong inflows
Ethereum ETFs also remained in positive territory, attracting $218.41 million during the week, according to SoSoValue. It was their third consecutive week of net inflows.
