Institutional investors increased their combined holdings of Strategy’s MSTR by $1.2 billion in the second quarter of 2026. Twelve of the company’s 15 largest shareholders added to their positions through June 30. Capital International Investors became the largest holder with a $3.491 billion stake, representing 9.4% of the issued shares. Goldman Sachs recorded the largest single increase. The buying preceded a shift in Michael Saylor’s Bitcoin accumulation strategy toward STRC. Shares of Strategy have gained more than 18% this week.