The latest data monitored on July 18th showed a notable change in the holdings of U.S. bitcoin ETFs. BlackRock increased its holdings by 1,708 BTC, valued at approximately $108.7 million. This brings BlackRock's total bitcoin position to 323,833 BTC, worth about $20.62 billion. In comparison, Grayscale reduced its holdings by 11 BTC, worth about $713,000 million. Grayscale now holds a total of 273,005 BTC worth about $17.4 billion. Overall, the nine Bitcoin ETFs combined have increased their holdings by 2,194 BTC, worth about $139.7 million.