U.S. spot Bitcoin ETFs took in more than $1.7 billion across two sessions as Bitcoin traded above the estimated average cost basis for ETF holders, Cointelegraph reported Sept. 23, citing SoSoValue and Farside Investors data.
The funds recorded about $715 million in net inflows on Tuesday after a 2026 high of roughly $999 million on Monday. BlackRock’s IBIT led Tuesday with about $350 million, followed by Fidelity’s FBTC with about $257 million and Grayscale Bitcoin Mini Trust with about $99 million, according to Farside figures cited in the report.
Total net assets across U.S. spot Bitcoin ETFs reached around $111 billion on Tuesday — up sharply from the 2026 low near $71 billion on June 30, though still below the January high near $128 billion.
Cost basis and profit-taking
Bloomberg Intelligence ETF analyst James Seyffart said Monday that the average Bitcoin ETF holder was back above water for the first time since January as Bitcoin moved above his estimated ETF cost basis of about $81,722 per coin. Separate CryptoSlate coverage noted that heavy ETF demand has coincided with short-term holder profit-taking near recent highs — a reminder that inflows and spot price do not move in a straight line.
Figures describe reported fund flows and market context. This is not investment advice.
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- Cointelegraph: Bitcoin ETFs take in $1.7B in 2 days (Sept. 23, 2026)
- SoSoValue / Farside Investors flow tables as cited by Cointelegraph and secondary desks
