US spot Bitcoin ETFs experienced significant capital outflows of $678.9 million between October 5 and October 9, according to Farside data calculated by The Defiant. This sharp reversal completely erased the $241.1 million in inflows recorded during the prior week. The recent selling pressure has resulted in cumulative net withdrawals of $437.8 million over the two-week period, marking a notable shift in fund flows for the spot Bitcoin ETF market.