BlackRock's Bitcoin ETF, IBIT, has exceeded its gold fund, IAU, in terms of net assets.IBIT currently holds net assets of nearly $33.2 billion, while IAU has $32.9 billion.This achievement is remarkable considering IBIT was launched in January 2024, whereas IAU started trading in January 2005.BlackRock's Bitcoin ETF also leads the US market, followed by Grayscale's GBTC and Fidelity.