Bitcoin ETFs recorded a one-day net outflow of 5,353 BTC, valued at $405.45 million, on Sept. 16. Over seven days, Bitcoin ETF net flows stood at -9,908 BTC, or -$750.42 million. Ethereum ETFs posted a one-day net outflow of 51,443 ETH, worth $123.48 million. Despite the daily decline, seven-day Ethereum ETF net flows remained positive at 34,334 ETH, or $82.42 million.