Blockchain analyst Yu Jin wrote that on March 22, ten BTC spot ETFs saw a net outflow of $93.83 million, corresponding to a net outflow of about 1,437 BTC from ETF custody addresses after the opening of the US stock market tonight (March 22). The outflows were from Grayscale (GBTC), which saw an outflow of about 5,493 BTC (corresponding to a capital outflow of $358.79 million on March 21); and inflows were from the remaining nine ETFs, which saw an inflow of about 4,056 BTC (corresponding to a capital inflow of $264.96 million on March 21), led by BlackRock (IBIT), which saw an inflow of 3,574 BTC ($233.45 million). Currently, the ten BTC spot ETFs hold a total of 825,350 BTC ($53.91 billion).