According to Lookonchain monitoring, the US spot bitcoin ETF data on June 7 shows that: 1. BlackRock increased its holdings of 4,896 bitcoins, worth about $347.61 million; BlackRock currently holds a total of 302,540 bitcoins, worth approximately $21.48 billion. Ark 21Shares increased its holdings of 1,364 bitcoins, worth about $96.84 million, and currently holds a total of 48,939 bitcoins, worth about $3.47 billion; Nine bitcoin ETFs added a total of 3,689 bitcoins, worth about $261.90 million.