BlackRock, the world’s largest investment firm, bought approximately $350 million worth of Bitcoin (BTC) and Ethereum (ETH) through its spot crypto ETFs on Wednesday, March 4. To be precise, BlackRock’s iShares Bitcoin Trust (IBIT) recorded $306.25 million in inflows, while its Shares Ethereum Trust (ETHA) added $45.5 million, according to the latest figures published by Lookonchain