Odaily News According to Farside Investors data, the U.S. Bitcoin spot ETF has received a net inflow of US$17.508 billion since its launch, of which Grayscale GBTC had a net outflow of US$19.059 billion, BlackRock IBIT had a net inflow of US$20.097 billion, and Fidelity FBTC had a net inflow of US$9.799 billion.