Bitcoin ETFs Post Modest Weekly Inflow as Ether Funds End Four-Week Streak

Sep 20, 2026 12:31 Written by Newisty Editorial Team bitcoin ethereum etf inflows outflows
Bitcoin ETFs Post Modest Weekly Inflow as Ether Funds End Four-Week Streak

Bitcoin ETFs Avoid Second Negative Week

US spot bitcoin ETFs—exchange-traded funds that hold bitcoin directly—posted a net inflow of $6.2 million for the week ending September 18, avoiding a second consecutive week of outflows. The result was driven by a strong Friday, when investors added $433 million to these products.

That Friday figure was the largest daily inflow since September 3, when the funds drew $730.9 million. The weekly net inflow was modest compared to the previous week's $462.7 million outflow.

Key Numbers Behind the Week

  • Monday saw $160 million in inflows.
  • Tuesday and Wednesday brought outflows of $450.3 million and $296 million respectively.
  • Thursday added $159.5 million, leaving the funds down $426.8 million for the week before Friday's buying.
  • Fidelity's FBTC accounted for $310.7 million of Friday's total, while BlackRock's IBIT added $108.4 million.
  • Bitcoin ETF trading volume rose to $16.17 billion from $8.77 billion the week before.

Ether ETFs End Four-Week Inflow Streak

Spot ether ETFs experienced a $140 million weekly net outflow, ending a four-week run of positive inflows that had gathered a combined $1.94 billion. The funds took in $143.8 million on Friday, but that was not enough to offset losses from Tuesday through Thursday, which totaled $404.8 million.

BlackRock's ETHA lost $56.1 million for the week despite a $114.3 million Friday inflow. Fidelity's FETH also ended the week down $25.8 million. Ether ETF trading volume increased to $6.82 billion from $5.14 billion the prior week.

Year-to-Date Performance

Bitcoin ETFs remain down about $1.45 billion in net flows this year, with cumulative inflows since launch at $55.16 billion and net assets of $102.53 billion as of Friday. Ether ETFs are still positive for the year with roughly $922 million in net inflows, holding $16.72 billion in net assets.

Analyst Comment on Investor Resilience

Bloomberg ETF analyst Eric Balchunas noted on Thursday that cumulative bitcoin ETF inflows remained around $55 billion, after peaking near $63 billion. He described investors' staying power as “incredible intestinal fortitude from the Boomers given they saw a 50% drawdown,” and suggested that rising stock prices may have helped investors hold on.

What's Still Unclear

The report does not specify what may happen in the coming week for these ETF flows.

Sources

Newisty Editorial Team
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Newisty Editorial Team

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Newisty Editorial Team covers technology, cryptocurrency, digital products, online platforms, developer tools and the wider digital economy. Our content is researched from official sources, company announcements, public documentation, market data and other primary or reputable sources. Articles are reviewed and edited before publication for clarity, accuracy and useful context.

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