Bitcoin
US Spot Bitcoin ETFs Record $999 Million in Daily Inflows
Strong fund allocations lifted average exchange-traded fund holders into positive returns as Bitcoin moved past $86,000.
United States spot Bitcoin exchange-traded funds registered $999 million in net inflows on September 21, according to data from SoSoValue. The daily total marked the largest single-day capital intake for the sector since October 6, 2025, absorbing roughly 11,530 BTC as the underlying asset surged toward $87,200.
Three funds accounted for 91% of the day's total volume. BlackRock's iShares Bitcoin Trust led the group with $381 million in net additions, followed by the ARK 21Shares Bitcoin ETF at $289 million and the Fidelity Wise Origin Bitcoin Fund at $239 million. Smaller inflows were posted by Morgan Stanley's fund, Bitwise, and Grayscale, with every reporting fund posting positive flows.
Bloomberg ETF analyst Eric Balchunas noted that the surge brought the average spot ETF investor back into profit for the first time since January. Balchunas added that the reported flows likely represented trade executions initiated on September 18 as Bitcoin rose between $76,400 and $80,900, rather than immediate purchases at the $87,200 high.
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