The U.S. spot Bitcoin ETF market has seen significant activity, with BlackRock's spot Bitcoin ETF growing to almost $18 billion in assets, surpassing many of its other funds. This growth is attributed to the rising value of Bitcoin, which has also increased the asset values of other ETFs. BlackRock's ETF, in particular, has attracted a new group of investors, contributing to its substantial inflows, crossing $15 billion in total. Additionally, the market saw its first positive inflow day of the week, with a net inflow of $123.7 million. Fidelity reported $76.3 million of inflows, while Blackrock had $33.3 million, marking a shift from the recent trend of outflows, including a record low daily outflow for GBTC of $17.5 million. Despite these outflows, the overall ETF landscape remains robust, with significant interest from both retail investors, who constitute 90% of spot Bitcoin ETF inflows, and Wall Street firms, which have invested $15 billion in Bitcoin ETFs in Q1 alone. This indicates a growing acceptance of Bitcoin among mainstream investors and a potential shift in the investment landscape.