BlackRock's CEO Larry Fink remains optimistic about the potential for a spot Ethereum ETF despite concerns over its securities designation. Various ETFs, including ARKB and Bitcoin ETFs, have seen record inflows, with ARK 21Shares Bitcoin ETF hitting over $200 million for the first time. Bitcoin ETFs have experienced significant net inflows, with BlackRock's IBIT now holding 250,000 Bitcoins worth $17.78 billion. Institutional interest in Bitcoin ETFs continues to grow, with expectations of up to $1 trillion in inflows from institutional investors through these ETFs.