Deep Tide TechFlow News, on December 12, according to Trader T's monitoring, yesterday the net inflow of Bitcoin spot ETF in the United States was 223.1 million USD. Among them, Fidelity FBTC had a net inflow of 121.9 million USD, while Ark Invest ARKB and Grayscale GBTC had net inflows of 52.67 million USD and 20.13 million USD respectively.