U.S. Spot Bitcoin ETFs Log First Weekly Outflows Since June — $751M in August
U.S. spot Bitcoin ETFs posted $300.5 million inflows on Sept. 3, led by BlackRock’s IBIT, while Ethereum ETFs saw $38.2 million outflows amid mixed crypto market signals.
On September 3, 2025, U.S. spot Bitcoin ETFs recorded $300.5 million in net inflows, reversing August’s outflows. BlackRock’s iShares Bitcoin Trust led with $289.8 million, while Grayscale’s Bitcoin Mini Trust added $28.8 million. ARK Invest–21Shares’ ARKB reported $27.9 million outflows. In contrast, U.S. spot Ethereum ETFs posted $38.2 million outflows, marking a three-day streak. BlackRock’s ETHA saw a $151 million outflow, despite Fidelity’s FETH adding $65.7 million and Grayscale’s ETH fund gaining $26.5 million. The divergence reflects shifting institutional sentiment toward Bitcoin and Ethereum.
- Spot Bitcoin ETF: An exchange-traded fund offering exposure to Bitcoin’s spot market price, allowing investors to buy shares instead of holding the cryptocurrency directly.
- iShares Bitcoin Trust (IBIT): BlackRock’s spot Bitcoin ETF, which provides institutional and retail investors direct exposure to Bitcoin’s market performance.