Bitcoin spot ETFs are seeing renewed institutional demand, with $462 million in net inflows recorded in a single day as BTC briefly rose above $73,000. According to Bloomberg ETF analyst Eric Balchunas, nearly all U.S. Bitcoin ETFs have now turned net positive in year-to-date flows, signaling a notable shift in institutional positioning.The inflows were led by iShares Bitcoin Trust (IBIT), which attracted about $307 million, helping extend a three-day ETF inflow streak to roughly $1.1 billion and around $1.5 billion over the past five days. Balchunas noted that only three funds remain negative year-to-date, including Fidelity Wise Origin Bitcoin Fund (FBTC) with roughly $1.1 billion in outflows, as well as Grayscale Bitcoin Trust ETF (GBTC) and ARK 21Shares Bitcoin ETF (ARKB), which have seen about $648 million and $162 million in outflows respectively.