US Bitcoin ETFs saw a net outflow of $301 million for the week, marking the first weekly outflow since September 6.The outflow comes after three consecutive weeks of inflows, with the previous week recording a total net inflow of $1.11 billion.Spot Ethereum ETFs also experienced a net outflow of $30.69 million for the week, despite $7.39 million in inflows on the last day.US-based Spot Bitcoin ETFs hold $57.73 billion worth of Bitcoin, approximately 4.68% of the total Bitcoin market cap.