According to BlockBeats, on April 17th, data analyst Yu Jin predicts a net outflow of approximately 924 BTC from ETF custody addresses after the opening of the US stock market. The outflow is expected to come from Grayscale (GBTC) and Ark Invest (ARKB), which are projected to lose around 1,470 BTC. On the other hand, the remaining nine ETFs are expected to see an inflow of approximately 546 BTC. Currently, the eleven BTC spot ETFs collectively hold 840,208 BTC, equivalent to about 52.72 billion USD.