Hassan Maishera
TL;DR
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U.S. spot Bitcoin ETFs attracted $2.65 billion in September, their second-largest monthly inflow since October 2025.
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Spot Ethereum ETFs received $832.43 million, marking their second-largest monthly inflow since August 2025.
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Both totals declined from August, although investment remained strong relative to recent months.
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October began with $102.7 million entering Bitcoin ETFs and $55.4 million leaving Ethereum ETFs.
U.S. spot Bitcoin exchange-traded funds attracted $2.65 billion in September, extending a period of strong investment as cryptocurrency markets entered the fourth quarter.
The figure was lower than August’s $3.52 billion but ranked as the second-largest monthly inflow since October 2025, according to SoSoValue data.
Ethereum funds also recorded a substantial positive month. However, the opening October session brought a divergence: Bitcoin ETFs continued drawing capital, while Ethereum ETFs registered withdrawals.
Bitcoin ETF Demand Remains Strong Despite Monthly Slowdown
September’s $2.65 billion in net inflows was approximately $870 million below August’s total, a decline of roughly 25%.
Even with that slowdown, the figure remained well above levels recorded across much of the preceding year. The positive result indicates that investors continued adding exposure through the funds rather than reversing August’s allocations.
ETF flows provide a useful measure of demand through these products, although they do not capture every source of cryptocurrency buying or selling. They also do not establish that all purchases come from institutional investors.
U.S. spot Ethereum ETFs attracted $832.43 million in September, compared with $1.85 billion in August.
That represents a decline of approximately 55%, showing that the pace of investment slowed more sharply than it did for Bitcoin funds.
Nevertheless, September was the second-largest monthly inflow for the Ethereum products since August 2025.
The result therefore presents two developments at once: Ethereum funds maintained meaningful net buying, but the strength of that demand moderated considerably from the previous month.
Whether the September slowdown becomes a lasting trend will depend on subsequent sessions rather than the monthly comparison alone.
October Opens With Diverging Fund Flows
The first trading day of October brought another $102.7 million in net inflows to Bitcoin ETFs.
Ethereum ETFs, by contrast, recorded $55.4 million in net outflows. The divergence suggests investors were allocating differently across the two asset classes at the start of the quarter. It does not, by itself, establish a persistent shift away from Ethereum.
Continued Bitcoin inflows would reinforce the recent demand pattern. For Ethereum, a return to positive flows would help determine whether the opening withdrawal was temporary.
Traders are likely to monitor both the direction and consistency of daily flows as prices move higher.
Bitcoin Advances as Sentiment Improves
Bitcoin rose 2.5% over the previous 24 hours to briefly hit $86,626 as of 1 a.m. Eastern Time on Friday. Ether gained approximately 1% to $2,735 over the same period.
The Crypto Fear & Greed Index stood at 69, placing market sentiment in greed territory. John said the reading suggests confidence has strengthened without reaching extreme levels.
Stronger sentiment can accompany renewed demand, although it is not a guarantee that prices will continue rising. Fund flows and economic developments remain important tests of the recovery.
U.S. Data Could Reshape the Fourth-Quarter Outlook
The October 8 jobless claims report will provide another indication of labor-market conditions. Inflation figures and Federal Reserve commentary could also change expectations for interest rates.
For now, September’s positive flows and Bitcoin’s strong start to October support an improving market picture. Sustained inflows would strengthen that interpretation, while renewed withdrawals or a less favorable policy outlook could challenge it.
