Latest Update for ๐Ÿ‡บ๐Ÿ‡ธ US spot BTC ETF flows on Mon, Sep 21, 2026: +$999.0m

Spot Bitcoin ETFs experienced a remarkably strong beginning to the new week. Following Friday's strong close, widespread demand across the major funds brought Monday's net inflows to just under +$1B. Consequently, this stands out as one of the most substantial single-day inflow sessions we have tracked in recent times.