币界网报道：BlackRock's iShares Bitcoin Trust (IBIT) now holds over 692,876 BTC, becoming the largest Bitcoin ETF and accounting for nearly 6% of Bitcoin's total circulating supply. The 11 approved U.S. spot Bitcoin ETFs collectively manage approximately 1.3 million BTC, valued at around $83 billion, representing about 6.6% of Bitcoin's total supply. Fidelity's FBTC follows with 443,000 BTC, while Grayscale's GBTC holds 291,000 BTC after significant outflows earlier this year. The rapid accumulation by these ETFs highlights growing institutional demand, with IBIT alone adding 100,000 BTC in just three months. Analysts note this institutional adoption could significantly impact Bitcoin's price dynamics and long-term supply availability.