Odaily News According to Farside Investors, the US Bitcoin spot ETF has accumulated a net inflow of more than $17.5 billion since its launch. Among them, BlackRock IBIT has accumulated a net inflow of $19.727 billion; Fidelity FBTC has accumulated a net inflow of $9.992 billion; Grayscale GBTC has accumulated a net outflow of $18.814 billion.