BlackRock’s iShares Staked Ethereum Trust ETF (ETHB) began trading on Nasdaq and recorded about $15.5 million in first-day trading volume alongside roughly $43.5 million in inflows. BlackRock said it is taking a cautious approach to expanding crypto ETF offerings because investor demand remains concentrated in Bitcoin and Ethereum. The firm is also studying a Bitcoin income ETF that would use covered calls on Bitcoin futures. ETHB is BlackRock’s first crypto ETF to include staking and follows the firm’s earlier launches of IBIT and ETHA.