Bitcoin (BTC) has seen a significant development as BlackRock’s spot Bitcoin ETF, IBIT, now holds more BTC than MicroStrategy after 40 trading days. This milestone highlights the growing importance of spot Bitcoin ETFs in the investment world. HODL15Capital‘s data indicates that in just 40 trading days, BlackRock’s spot Bitcoin ETF, IBIT, has accumulated 196,089 BTC, surpassing MicroStrategy’s 193,000 BTC holdings. This shift indicates that the largest corporate Bitcoin investor is now a BlackRock ETF instead of MicroStrategy.