Bitcoin spot ETFs (funds holding Bitcoin directly) recorded total net outflows of $46.6464 million on Sept. 8, U.S. Eastern time, according to SoSoValue data. Bitwise's BITB led daily inflows with $14.4672 million, taking its cumulative net inflows to $2.131 billion. BlackRock's IBIT followed with $10.655 million in daily inflows and $64.067 billion in cumulative net inflows. Grayscale's GBTC posted the largest daily outflow at $65.5096 million, bringing its historical net outflows to $27.719 billion. Total net assets held by Bitcoin spot ETFs stood at $99.516 billion, while their ETF net asset ratio, measured against Bitcoin's total market capitalization, was 6.31%. Cumulative historical net inflows reached $55.571 billion.