According to Lookonchain monitoring, in the past 16 days, BlackRock ETF's address has increased its holdings by 12,272 BTC ($742 million).
From August 27 to September 24, when the trading price of BTC was consistently below $60,000, BlackRock hardly accumulated any. Since September 24th, they have resumed buying and added another 12,272 BTC to their holdings. They currently hold a total of 369,822 BTC ($22.4 billion).