US spot Bitcoin ETFs took in roughly $854M over the prior five trading days (Aug 3–7), led by BlackRock's IBIT ($694M), while spot Ethereum ETFs added ≈$245M. That was the fifth straight week of net inflows for both. But on Aug. 10, BTC ETFs flipped to a $91M net outflow while ETH ETFs stayed marginally positive (+$5.3M).
Matters because: multi-week inflows support the institutional accumulation thesis, but the one-day reversal may show near-term profit-taking after last week's rally.