Andreas Halvorsen runs Viking Global, a hedge fund overseeing $37.68B in disclosed equity holdings (SEC CIK 0001103804). The latest portfolio (2025Q4) discloses 76 positions across 8 sectors, with the largest positions in MSFT, PNC and TSM. On a mark-to-market basis the tracked portfolio has returned 26.6% over the past year. OpenStocks tracks 40 consecutive quarterly snapshots for this manager — every position change, new entry, and exit is logged below.