BlackRock is reportedly experiencing a significant outflow from its bitcoin exchange-traded fund (ETF), with estimates ranging from $490 million to $1 billion. The outflow is part of a larger trend of bitcoin ETFs losing value, with spot bitcoin ETFs recording $1.42 billion in outflows. The reasons for the outflow and the exact amount are unclear, with some reports citing a fraud scandal and others noting large transfers of bitcoin and ether to Coinbase Prime.