BlackRock transferred approximately $443.88 million in Bitcoin and Ethereum from its ETF wallets to Coinbase Prime within 30 minutes on Nov. 12, according to blockchain monitoring service Onchain Lens. The transaction involved 4,189 BTC worth about $304.72 million and 68,230 ETH worth about $139.16 million. Movements from ETF custodial wallets to exchanges can reflect rebalancing or liquidity operations connected to fund inflows and outflows, although the specific purpose of this transfer was not stated.