According to AiCoin monitoring, over the past 4 trading days, funds from the US spot BTC ETF have continued to flow in, reaching $1.017 billion. During this period, the largest inflow was IBIT, with a total of 687 million US dollars; Next is FBTC, with an inflow of 227 million US dollars. According to the "Spot BTC ETF Tracking" real-time trading strategy developed by AiCoin, there is a significant positive correlation between the inflow of ETF funds and BTC prices. Subscription indicators can be used to automatically place orders based on the flow of funds in the program. Data for reference only