$999 million flowed into US spot Bitcoin ETFs in a single day — just a hair short of the billion-dollar mark.

According to The Block, US spot Bitcoin ETFs saw a net inflow of $999 million on Monday, the largest single-day inflow since October 6, 2025 — a scale not seen in nearly 11 months.

The available material doesn't specify which ETFs drove the bulk of the inflow, how Bitcoin's price moved that day, or the institutional dynamics behind this wave of capital — no further details are available at this time.