The Vanguard Mid-Cap Index Fund completed its first-ever purchase of MicroStrategy (MSTR) stock. A new 13F filing confirms the fund acquired 2.91 million shares, valued at approximately $505 million.

This substantial entry by one of the world's largest asset managers signals increased institutional interest in companies with Bitcoin exposure. MicroStrategy remains the largest corporate holder of Bitcoin.

The purchase emerged the same day Mizuho analyst Dan Dolev lowered the firm's price target for MSTR. Dolev reduced the target to $403, down from $484.

Despite the reduction, Mizuho maintained its "Outperform" rating on the stock. The firm cited continued optimism regarding the company’s long-term prospects within the evolving cryptocurrency landscape.