ChainCatcher message, according to SoSoValue data, last week (Eastern Time December 30 to January 3) saw a net inflow of 245 million USD for Bitcoin spot ETFs.The Bitcoin spot ETF with the highest net inflow last week was Fidelity Bitcoin ETF FBTC, with a weekly net inflow of 275 million USD, bringing the historical total net inflow of FBTC to 12.11 billion USD. The second was ARK & 21Shares Bitcoin ETF ARKB, with a weekly net inflow of 202 million USD, and the historical total net inflow of ARKB currently stands at 2.69 billion USD. The Bitcoin spot ETF with the highest net outflow last week was Grayscale ETF GBTC, with a weekly net outflow of 167 million USD, and the historical total net outflow of GBTC has reached 21.52 billion USD.As of now, the total net asset value of Bitcoin spot ETFs is 111.46 billion USD, with an ETF net asset ratio (market cap relative to total Bitcoin market cap) of 5.72%, and the historical cumulative net inflow has reached 35.91 billion USD.