According to Lookonchain monitoring, on December 19, ten US bitcoin ETFs had a net inflow of 2,089 BTC ($210.25 million), of which BlackRock had inflows of 3,548 BTC ($357.18 million). BlackRock currently holds 553,465 BTC, worth $55.71 billion; Nine Ethereum ETFs had a net inflow of 18,894 ETH, of which BlackRock had inflows of 22,111 ETH ($79.93 million). BlackRock currently holds 1,047,490 ETH, worth $3.79 billion.