TheBlock
U.S. spot Bitcoin ETFs pulled in $2.4 billion in the week ending Sept. 25, their largest weekly inflow since October 2025 and enough to turn 2026 net flows positive. The funds had been down about $5.8 billion as recently as July 13; they now sit about $934.1 million in the green for the year. Ether ETFs also reversed a week of outflows, drawing $689.9 million.
Why it matters
The turnaround spans more than Bitcoin. Spot Solana ETFs took in $188.2 million for the week, while spot XRP ETFs added $75.6 million. The breadth suggests renewed demand across several crypto products, though daily Bitcoin ETF inflows declined after a $999 million Monday, the funds’ largest single-day total since Oct. 6, 2025.
Treasury buybacks are one proposed macro link. Bloomberg ETF analyst Eric Balchunas tied a reported $4.6 billion cash influx to the Treasury Department’s plan to increase buybacks of long-dated bonds. NovaDius Wealth Management president Nate Geraci said the funds had taken in $5.3 billion since the Treasury first announced the buybacks. Those are analysts’ explanations for the flows, not proof of a direct cause.
Market impact
BlackRock’s IBIT led Bitcoin ETF inflows with $1.2 billion, followed by Fidelity’s FBTC at $701.7 million. Cumulative net inflows since the products launched reached $57.6 billion, and their net assets totaled $108.4 billion. Bitcoin ETF trading volume was $15 billion for the week, down from $16.2 billion the previous week.
Ether funds added $689.9 million after losing $140 million the week before; their year-to-date flows reached about $1.6 billion. Solana ETF assets rose to a record $1.5 billion. The key question for markets is whether inflows remain broad and sustained after the sharp Monday surge.
Frequently asked questions
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How much did Bitcoin ETF flows improve in the week ending Sept. 25?
U.S. spot Bitcoin ETFs received $2.4 billion, their largest weekly inflow since October 2025. That turned 2026 net flows positive, to about $934.1 million.
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Which Bitcoin ETF led weekly inflows?
BlackRock’s IBIT led with $1.2 billion in inflows. Fidelity’s FBTC followed with $701.7 million.
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Did Ether and Solana ETFs also attract inflows?
Yes. Ether ETFs drew $689.9 million after outflows the previous week, while Solana ETFs took in $188.2 million and reached a record $1.5 billion in combined assets.
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What macro factor did analysts connect to the ETF inflows?
Analysts pointed to the Treasury Department’s plan to increase buybacks of long-dated bonds as a possible link. The reported connection is an explanation for the flows, not proof of direct causation.
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Did Bitcoin ETF inflows keep rising throughout the week?
No. Monday brought $999 million, then daily inflows declined each session through Friday. The funds still recorded seven consecutive days of inflows, totaling $3.0 billion from Sept. 17.
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