Spot Bitcoin (CRYPTO: BTC) exchange-traded funds pulled in over $730 million on Thursday, the third-largest daily inflow of the year, as the apex cryptocurrency surged past $82,000. BlackRock Leads BTC Purchases BlackRock's iShares Bitcoin Trust (NASDAQ:IBIT), the world's largest cryptocurrency-focused fund, alone accounted for nearly $454 million, according to data from SoSo Value.