ChainCatcher message, according to SoSoValue data, the net inflow of Bitcoin spot ETFs last week (Eastern Time from January 27 to January 31) was $559.8 million.The Bitcoin spot ETF with the highest net inflow last week was Blackrock's Bitcoin ETF IBIT, with a weekly net inflow of $751 million. Currently, IBIT's historical total net inflow has reached $40.48 billion.The Bitcoin spot ETF with the highest net outflow last week was Grayscale's Bitcoin Trust GBTC, with a weekly net outflow of $139 million. Currently, GBTC's historical total net outflow has reached $21.89 billion.As of the time of writing, the total net asset value of Bitcoin spot ETFs is $119.66 billion, and the ETF net asset ratio (market value compared to the total market value of Bitcoin) is 5.94%. The historical cumulative net inflow has reached $40.50 billion.