According to TechFlow, on October 21, according to TheDataNerd monitoring, last week, BTC ETF accumulated 32,370 BTC (about 2.13 billion US dollars). Among them, IBIT is the strongest buyer, holding 17,170 BTC (about 1.141 billion US dollars); the second largest buyer is FBTC, holding about 5,000 BTC (about 319 million US dollars).