Bitcoin spot ETFs experienced a net inflow of $53.87 million on March 12, marking the fourth consecutive day of positive inflows. BlackRock's IBIT led the surge with a single-day net inflow of $46.15 million, bringing its cumulative net inflow to $62.92 billion. Fidelity's FBTC followed with a $15.30 million inflow, reaching a total of $10.97 billion. Conversely, Grayscale's GBTC recorded the highest net outflow of $9.88 million, with its cumulative outflow now at $25.94 billion. The total net asset value of spot Bitcoin ETFs stands at $90.47 billion, representing 6.45% of Bitcoin's total market cap, with cumulative net inflows reaching $55.96 billion.