Key Takeaways
- • BlackRock's IBIT attracted $665.2 million in net inflows on Monday, October 19, per Farside Investors, making it the dominant contributor to a day of spot bitcoin ETF buying.
- • Across all U.S. spot bitcoin ETFs, combined net inflows were a smaller $526.7 million, as withdrawals totaling $138.5 million from other products offset part of IBIT's intake.
- • Fidelity's FBTC lost $83.6 million and Grayscale's GBTC lost $54.9 million on the same day, while the remaining products in Farside's table recorded zero net flows.
- • The Block, citing SoSoValue data, reported IBIT's intake as its strongest daily figure since October 7, 2025, with IBIT net assets of $66.37 billion.
- • Presto Research's Min Jung said the reason for the inflows was unclear, suggesting investors may be positioning for bitcoin to catch up with other risk assets, an explanation the flow data itself does not confirm.
Summary
Bitcoin spot ETFs posted a strong day on Monday, October 19, but demand was highly concentrated. According to Farside Investors, BlackRock's IBIT attracted $665.2 million in net inflows, while the combined net inflow across U.S. spot bitcoin ETFs was $526.7 million. The gap reflects withdrawals of $138.5 million from other products, including a $83.6 million outflow from Fidelity's FBTC and a $54.9 million outflow from Grayscale's GBTC. The remaining products in the table recorded zero net flows.
Data from SoSoValue, as reported by The Block, put IBIT's intake at $665.16 million and the combined fund total at $526.6 million, with the small differences attributed to separate data series. The Block also reported that Monday marked IBIT's strongest daily intake since October 7, 2025, and that the fund's net assets stood at $66.37 billion. Flow figures and assets under management measure different things: the former tracks net subscriptions over a period, while the latter reflects the size of the fund.
Presto Research's Min Jung told The Block that the exact cause of the inflows was unclear, though investors could be positioning for bitcoin to catch up with other risk assets. That remains an analyst's possible explanation rather than something the flow data establishes. The flow figures also do not show whether the buyers intend to hold long term or trade more actively, nor do they indicate the direction of bitcoin's next price move. The figures also do not establish that money moved directly from Fidelity or Grayscale into BlackRock.
Readers should note that these numbers describe October 19 trading, reported the following morning, and not completed October 20 flows. Farside's October 20 entry was still unfilled at the time of review, and an empty entry should not be read as a final zero. The key indicator to watch is whether subscriptions broaden to other funds or remain concentrated in IBIT, with repeated observations needed to distinguish a sustained shift from a single large session.
Data from SoSoValue, as reported by The Block, put IBIT's intake at $665.16 million and the combined fund total at $526.6 million, with the small differences attributed to separate data series. The Block also reported that Monday marked IBIT's strongest daily intake since October 7, 2025, and that the fund's net assets stood at $66.37 billion. Flow figures and assets under management measure different things: the former tracks net subscriptions over a period, while the latter reflects the size of the fund.
Presto Research's Min Jung told The Block that the exact cause of the inflows was unclear, though investors could be positioning for bitcoin to catch up with other risk assets. That remains an analyst's possible explanation rather than something the flow data establishes. The flow figures also do not show whether the buyers intend to hold long term or trade more actively, nor do they indicate the direction of bitcoin's next price move. The figures also do not establish that money moved directly from Fidelity or Grayscale into BlackRock.
Readers should note that these numbers describe October 19 trading, reported the following morning, and not completed October 20 flows. Farside's October 20 entry was still unfilled at the time of review, and an empty entry should not be read as a final zero. The key indicator to watch is whether subscriptions broaden to other funds or remain concentrated in IBIT, with repeated observations needed to distinguish a sustained shift from a single large session.
Go deeper than the headline
Research every firm in this story, track the ones that matter and get the daily briefing — free for 7 days.