BlackRock's Bitcoin exchange-traded fund (ETF) has surpassed MicroStrategy's holdings of the cryptocurrency, according to data from BitMEX. BlackRock's ETF, known as IBIT, now holds nearly 198,000 BTC, valued at over $13.5 billion as of March 8. This development comes after the U.S. Securities and Exchange Commission approved nine new funds on January 10, reflecting growing institutional interest in Bitcoin.