BlackRock’s Bitcoin Fund Became ‘Greatest Launch in ETF History’ IBIT has grown to more than $50 billion in assets in 11 months US ETFs played a key role in Bitcoin’s rally over $100,000 An iShares billboard outside the Nasdaq MarketSite in New York in July. Photographer: Victor J. Blue/Bloomberg BlackRock Inc.’s iShares unit offers more than 1,400 exchange-traded funds around the world, yet none of them have performed quite like this. The iShares Bitcoin Trust (ticker IBIT) smashed industry records in its launch year of 2024. In just 11 months, it grew to a behemoth with more than $50 billion in assets. Simply put, no ETF has ever had a better debut.