According to the latest data, the global investment management company BlackRock and Fidelity's spot Bitcoin exchange-traded funds (ETFs) collectively hold more than 500,000 bitcoins. Specifically, these two companies' ETFs have a combined total of 524,390 BTC, which, at the current market price, equates to an impressive total value of $31.6 billion. This holding represents a significant portion of the global bitcoin supply, highlighting the influence of institutional investors in the cryptocurrency space. On a global scale, BlackRock and Fidelity's Bitcoin ETFs have become key players in the market, having a profound impact on the development of the entire cryptocurrency market.