Institutional investors have poured approximately $2.39 billion into U.S. spot Ethereum ETFs over six trading days ending July 25, 2025, significantly outpacing Bitcoin ETFs, which attracted $827 million in the same period. BlackRock's iShares Ethereum Trust (ETHA) was a key recipient, securing $1.79 billion, or 75% of the total Ethereum ETF inflows, pushing its assets under management beyond $10 billion in 251 trading days. This trend highlights a growing investor preference for Ethereum, with corporate treasuries like BitMine Immersion Technologies also accumulating the cryptocurrency, potentially leading to a supply shock. Meanwhile, Bitcoin ETFs saw a net outflow of $131 million on July 22, underscoring the shift towards Ethereum.