BlackRock's Bitcoin spot ETF, iShares Bitcoin Trust (IBIT), has experienced a record outflow of $3.31 billion, surpassing the previous high of $188 million set in December last year. This development highlights the ongoing challenges faced by Bitcoin ETFs in attracting and retaining investors amid market volatility and regulatory uncertainty. Despite the outflows, iShares Bitcoin Trust remains the largest Bitcoin ETF in the United States, with approximately $13 billion in assets under management. However, the outflows indicate that investors may be seeking alternative investment options or becoming more cautious about the cryptocurrency market.