Ethereum spot ETFs experienced a significant net outflow of $72.06 million on December 31, 2025, according to SoSoValue data. Grayscale's Ethereum Mini Trust ETF led the outflows with $31.98 million, while BlackRock's Ethereum ETF followed with $21.51 million. Despite these outflows, the cumulative net inflow for Grayscale's ETF stands at $1.488 billion, and BlackRock's at $12.568 billion. The total net asset value of Ethereum spot ETFs is currently $17.948 billion, representing 5% of Ethereum's total market capitalization. Historical cumulative net inflows for these ETFs have reached $12.328 billion, highlighting the continued interest in Ethereum investment products despite recent outflows.