Bitcoin and Ethereum ETFs experienced substantial inflows on July 21, with Bitcoin ETFs recording a net flow of 3,822 BTC, equivalent to $454 million. iShares, managed by Blackrock, led the inflows with 4,225 BTC, valued at $501.81 million, bringing its total holdings to 735,741 BTC, worth $87.39 billion. Ethereum ETFs also saw notable activity, with a net flow of 110,473 ETH, amounting to $422 million. iShares again topped the inflows with 110,758 ETH, valued at $423.1 million, increasing its total holdings to 2,571,519 ETH, valued at $9.82 billion.