According to Lookonchain data, on September 21, Bitcoin ETFs saw a net inflow of 1,363 BTC (approximately $116.09 million), and Ethereum ETFs saw a net inflow of 54,659 ETH (approximately $149.45 million). Over the past 7 days, Bitcoin ETFs experienced a net outflow of 4,418 BTC (approximately $376.24 million), and Ethereum ETFs saw a net outflow of 62,810 ETH (approximately $171.73 million).