US Spot Bitcoin ETFs Draw $2.65B in September Net Inflows
September ranked as the second-strongest month for US spot bitcoin ETF inflows since October 2025, according to The Block.
US spot bitcoin exchange-traded funds pulled in $2.65 billion in net inflows during September, according to data reported by The Block.
That total makes September the second-largest month for net inflows into the category since October 2025, the report said, pointing to sustained institutional participation in the funds.
Demand holds through the month
The figure reflects aggregate flows across the US spot bitcoin ETF lineup rather than any single issuer's performance. Headline coverage of the data rounded the monthly total to roughly $2.7 billion.
Flows into spot bitcoin ETFs are watched as a proxy for how institutional and advisory capital is positioned toward bitcoin exposure through regulated vehicles.
Monthly flow totals can vary sharply depending on price action, macro conditions and allocator activity, and a single month's reading does not establish a trend on its own.