Bitcoin spot ETFs experienced a significant net outflow of $1.23 billion during the trading week from October 13 to October 17, marking the second-highest weekly outflow on record, according to SoSoValue data. All twelve Bitcoin spot ETFs reported net outflows, with no inflows recorded. The Grayscale Bitcoin Trust (GBTC) led the outflows, with a weekly net outflow of $298 million. This brings GBTC's historical total net outflow to $24.5 billion, highlighting ongoing investor withdrawal from Bitcoin spot ETFs.