On December 31, U.S. spot Bitcoin ETFs saw a significant reversal with net outflows totaling $348.34 million after net inflows the previous day. Leading these outflows were major funds including BlackRock's IBIT and Ark Invest's ARKB, among others. Various other Bitcoin-related funds, such as Grayscale's GBTC and Fidelity's FBTC, also recorded notable outflows.
