In the trading week from May 18 to May 22, Bitcoin spot ETFs recorded substantial net outflows totaling $1.257 billion, according to data from SoSoValue reported by Odaily. The most significant contributor to these outflows was BlackRock's ETF IBIT, which saw $1.008 billion withdrawn, raising its total historical net outflow to $64.77 billion. Following IBIT, Fidelity's ETF FBTC experienced a weekly outflow of $112 million, bringing its total historical outflow to $10.76 billion. In contrast, Morgan Stanley's ETF MSBT was the only one to see a net inflow during this period, gaining $1.1107 million, resulting in a total historical inflow of $234 million. As of the latest data, the total net asset value of Bitcoin spot ETFs is $98.87 billion, with the ETF net asset ratio representing 6.49% of Bitcoin's total market capitalization. The cumulative historical net inflow for these ETFs has reached $57.08 billion, highlighting the fluctuating investor interest in the Bitcoin ETF market.