BlackRock, the world-famous fund management firm, holds nearly $24 billion worth of Bitcoin on behalf of its BTC Spot ETF investors.BlackRock CEO, Larry Fink, declares himself a 'big Bitcoin believer' after being a naysayer for the first few years.The U.S. Bitcoin spot ETF market witnessed net inflows of $494.4 million, the highest since June 4.The current trade price of Bitcoin is $65,693, and more than 84% of Bitcoin holders are in net profit.