The claim is fully corroborated by multiple independent financial and crypto news outlets. BlackRock's iShares Staked Ethereum Trust (ETHB) launched on March 12, 2026, and reached $254 million in AUM by March 19, 2026. The figure includes approximately $100 million in seed capital and $146 million in net inflows. The fund's strategy involves staking a significant majority (70-95%) of its Ethereum holdings.