$BTC
According to official data from BlackRock, as of September 20, the holdings of its spot Bitcoin exchange-traded fund IBIT reached 357,550.2143 BTC, worth approximately $22,497,148,867.85. Historical data shows that as of September 16, IBIT's holdings were also 357,550.2143 BTC, which means that IBIT's holdings are suspected to have remained unchanged for a week.