According to SoSoValue data, Bitcoin spot ETFs saw a net outflow of $497 million last week (December 15th to December 19th, Eastern Time). The Fidelity ETF (FBTC) saw the largest net inflow last week, with $33.15 million, bringing its historical total net inflow to $12.21 billion. The BlackRock ETF (IBIT) saw the largest net outflow last week, with $240 million, bringing its historical total net inflow to $62.49 billion; followed by the Bitwise ETF (BITB), with a net outflow of $115 million, bringing its historical total net inflow to $2.17 billion. As of press time, the total net asset value of Bitcoin spot ETFs is $114.87 billion, the ETF net asset ratio (market capitalization as a percentage of Bitcoin's total market capitalization) is 6.53%, and the historical cumulative net inflow has reached $57.41 billion.