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Bitcoin and Ethereum ETF Weekly Flows: The Good, the Bad, and the Concerning

Reported by Cryptopotato ·Cryptorank
Oct 4, 2026· 2 min read
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Key Takeaways
  • • Spot Bitcoin ETFs posted roughly $2.4 billion in net inflows in the last full week of September, their best five-day performance in nearly a year, which turned year-to-date flows positive.
  • • The rally proved short-lived: Bitcoin ETFs took in only about $83 million in net inflows for the week ending October 3, following a $6.21 million inflow week and a $462.73 million outflow week before that.
  • • Spot Ethereum ETFs opened the week with $17.10 million in net inflows on Monday, then reversed into outflows, with $2.81 million leaving on Tuesday.
  • • Ethereum ETFs finished the week in negative territory, their second losing week in the last three, while Bitcoin funds' flows remained volatile on a day-to-day basis.
Summary
Spot Bitcoin exchange-traded funds recorded their strongest stretch in nearly a year in the last full week of September, attracting roughly $2.4 billion in net inflows according to the article. That surge reversed a difficult earlier period: the funds lost $2.43 billion in May and posted a net withdrawal of $4.5 billion in June. The late-September inflows were enough to move year-to-date flows into positive territory, a result the article describes as difficult to imagine a few months earlier.

The momentum did not carry into the following week. Bitcoin ETFs took in $31.07 million on Sunday, September 28, and $66.19 million on Tuesday, but investors pulled $148.69 million out on Wednesday. The article notes this reversal came on the day the PCE inflation data was released, which showed inflation below expectations. Flows returned to positive on Thursday with $102.67 million in net inflows, per SoSoValue, and a further $31.7 million entered on Friday, according to FarSide. The week closed at roughly $83 million in net inflows, which the article characterizes as modest compared with the prior week's $2.39 billion. Two weeks earlier, flows had been $6.21 million for the week, and the week before that saw $462.73 million leave the funds.

Ethereum ETFs followed a weaker path. The spot Ether products started the week positively, with $17.10 million in net inflows on Monday, but withdrawals dominated from Tuesday, when $2.81 million left the funds. The article's account of the Ethereum figures is incomplete in the available text. The publication reports that the funds ended the previous week in the red, the second losing week in the last three, indicating that Ether products have lagged Bitcoin products in recent weeks even as Bitcoin flows stayed volatile.

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Sources

2 outlets

AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Cryptopotato Bitcoin and Ethereum ETF Weekly Flows: The Good, the Bad, and the Concerning Cryptorank Bitcoin and Ethereum ETF Weekly Flows: The Good, the Bad, and the Concerning