Net Outflow of $515.9 Million: October Recap of U.S. Spot Bitcoin ETFs

US spot Bitcoin ETFs recorded a net outflow of $515.9 million in October, with the final trading day's single-day outflow flipping the month from net inflows to net outflows. The figure, compiled by summing daily flows across 12 US-listed spot Bitcoin ETFs over 22 trading days from October 1–30, was calculated from Farside Investors' daily flow data rather than a separately published monthly statistic. As of October 29, the month had accumulated $127.3 million in net inflows, including a $17.2 million net inflow that day, before the last session reversed the trend. The Korean won conversion (approximately 687.8 billion won) uses the October 30 closing rate of 1,333.12 won per dollar. The swing underscores how sensitive monthly ETF flow narratives are to single-session moves, with attention now shifting to whether November opens with renewed inflows or continued outflows.