US spot crypto ETF flows diverged on August 12, with spot Bitcoin ETFs posting net outflows of $61.1 million and spot Ethereum ETFs recording net inflows of $7.4 million. The update points to weaker demand for Bitcoin fund exposure on the day, while Ethereum-linked products continued to attract fresh capital. ETF flows are closely watched because they offer a real-time signal of institutional and retail positioning in regulated crypto investment vehicles.