U.S. spot Bitcoin ETFs recorded about $276.91 million in net inflows on Sept. 3, while U.S. spot Ether ETFs attracted $141.39 million, bringing combined inflows for the two markets to $418.30 million. 21Shares ARKB led Bitcoin ETF inflows with $137.74 million, followed by Fidelity FBTC at $74.45 million and Grayscale Mini BTC at $48.79 million. BlackRock's ETHA led Ether funds with $72.07 million, while Fidelity's FETH added $65.11 million. Bitcoin ETFs posted a second consecutive trading day of net additions and exceeded the previous day's intake, according to SoSoValue.