Online reports that according to Fortune statistics, BlackRock's iShares Bitcoin Trust ETF (stock code: IBIT), with a size of approximately US$75 billion, has attracted a large amount of funds from institutional investors and retail investors. In the past 18 months, funds have flowed in all but one month. According to rough calculations by Bloomberg as of July 1, the fund's expense ratio is 0.25%, and annual fee income is estimated at $187.2 million. This figure is slightly higher than BlackRock's iShares core Standard & Poor's 500 Index ETF (IVV) of $187.1 million, which is almost nine times the size of IBIT, with assets of approximately $624 billion and fees of just 0.03%.