Institutional holdings data reveals that several major global asset management firms have significant stakes in MicroStrategy (MSTR) stock. Vanguard holds approximately 8.12% of MSTR, equating to about 21.735 million shares valued at approximately $3.183 billion. Capital Research & Management (International Investors) holds 7.70%, or about 20.615 million shares. Other major shareholders include BlackRock, State Street, Morgan Stanley, and UBS. This data indicates that leading asset managers are indirectly investing in Bitcoin-related assets through their holdings in MicroStrategy.