BlackRock's Bitcoin exchange-traded fund, IBIT, has exceeded 770,000 BTC in holdings, reaching 770,010.5686 BTC as of September 30th. This marks an increase of approximately 20,000 BTC from the 750,000 BTC reported on September 5th. The current holdings are valued at around $87.138 billion, reflecting significant growth in BlackRock's Bitcoin assets over the past month.