PRIMECAP Management

PRIMECAP Management is a significant player in the investment management space, known for its strategic approach to portfolio management. The firm has a diverse portfolio, with notable positions in sectors like Technology and Healthcare, as evidenced by its recent disclosures. As of May 11, 2026, PRIMECAP's disclosed trading record shows a range of $3.6B to $8.5B, highlighting a pattern of position increases and reductions across various companies, including Astrazeneca PLC and Microsoft Corp.