Bitcoin spot ETFs experienced a net outflow of $19.3 million on December 29, with IBIT accounting for $7.9 million of the decrease. Similarly, Ethereum spot ETFs recorded a net outflow of $9.6 million, primarily driven by a $13.3 million outflow from ETHA. These figures were reported by Farside Investors on December 30, 2025, highlighting a notable shift in investor sentiment towards these major cryptocurrencies.