According to SoSoValue, U.S. spot Bitcoin ETFs saw a combined net outflow of $166 million on February 19, led by a $164 million withdrawal from BlackRock's iShares Bitcoin Trust (IBIT) and $1.70 million from Valkyrie's Bitcoin Fund (BRRR). The ETFs collectively hold $84.37 billion in assets, with a historical net inflow of $53.93 billion.